DAEWOO AKF 4087 - Car radio

AKF 4087 - Car radio DAEWOO - Free user manual and instructions

Find the device manual for free AKF 4087 DAEWOO in PDF.

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Product Type Car Stereo with Cassette Player
Model Daewoo AKF 4087
Dimensions (W x H x D) 188 x 58 x 172 mm (7-3/8" x 2-1/4" x 6.77")
Chassis Size (W x H x D) 179 x 51 x 147 mm (7.05" x 2" x 5.79")
Net Weight 1.8 kg
Power Supply DC 12V (Rated 14.4V, usable 10.8–15.6V), negative ground
Maximum Current Consumption 7 A
Audio Output Power (Max) Rear: 25 W, Front: 7 W
Rated Output Power Front: 4.5 W/ch, Rear: 16 W/ch into 4 ohms (1 kHz, 10% THD)
Signal-to-Noise Ratio (Audio) Better than 50 dB
Load Impedance 4 ohms
Tone Controls Bass/Treble ±10 dB at 100 Hz/10 kHz
Cassette Tape Speed 4.75 cm/s
Wow and Flutter 0.15% (WRMS) nominal
Tuner FM Frequency Range (Europe) 87.5 – 108 MHz
Tuner FM Sensitivity (30 dB S/N) 10 dBμ (3.2 μV / 75 ohms)
Tuner AM Frequency Range (Europe) 522 – 1620 kHz
Tuner LW Frequency Range 153 – 281 kHz
Safety Warning Do not use endless tapes; tape inserted reverse side up cannot be ejected.
Maintenance Clean playback head before adjustments; use test tape MTT-114.
Spare Parts Availability Detailed exploded views and parts lists provided for repair.
Reparability Full service manual with adjustment procedures, schematics, and wiring diagrams.
Included Accessories None specified in manual; typical mounting hardware and wiring connectors.

Frequently Asked Questions - AKF 4087 DAEWOO

How do I reset the Daewoo AKF 4087 after a power failure?
Disconnect the battery for a few seconds or press the reset button (if available). The unit may require re-entering radio presets and clock settings.
Why is there no sound coming from the speakers?
Check speaker connections, ensure the unit is not muted, verify the volume is turned up, and confirm the correct source (radio/tape) is selected. Also check the fuse (7A max).
How can I improve FM radio reception?
Ensure the antenna is fully extended and properly connected. Adjust the antenna position for best signal. The unit has a sensitivity of 10 dBμ.
The cassette tape will not play or sounds distorted. What should I do?
Clean the playback head using a cleaning cassette or isopropyl alcohol and a cotton swab. Avoid using endless tapes as they can damage the mechanism. Check that the tape is inserted correctly.
What is the maximum power output for front and rear speakers?
Maximum output is 25 W for rear speakers and 7 W for front speakers. Rated output is 16 W rear and 4.5 W front per channel into 4 ohms.
How do I adjust the bass and treble?
Use the bass and treble controls on the front panel. They provide ±10 dB adjustment at 100 Hz and 10 kHz respectively.
Can I connect an external amplifier to this unit?
Yes, the unit has preamp outputs (RCA) for left and right channels. Refer to the wiring diagram for the preamp out connections.
The display is dim or not working. What could be the issue?
Check the dimmer connection (if applicable) and ensure the unit is receiving power. The LCD is driven by IC LC75852.
What are the spare part numbers for the cassette deck mechanism?
The cassette mechanism is the SM-909 series. For detailed parts, refer to the exploded view and parts list in the service manual, which includes part numbers like R416C1 for the main chassis.
How do I switch between FM/AM/LW bands?
Press the band button on the front panel. The unit supports FM, AM (MW), and LW (on AKF-4087). Frequency ranges vary by region.

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Download the instructions for your Car radio in PDF format for free! Find your manual AKF 4087 - DAEWOO and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. AKF 4087 by DAEWOO.

USER MANUAL AKF 4087 DAEWOO

DAEWOO ELECTRONICS CO., LTD

CONTENTS

  • SPECIFICATIONS
    ● CAUTION 3
    ● BLOCK DIAGRAM 4
    ● ADJUSTMENTS 5-7
    ● ADJUSTMENT LOCATIONS 8
    ● SCHEMATIC DIAGRAM 9
    ● PARTS LOCATION ON P. C. BOARD 10-13
    ● EXPLODED VIEW (SET) 14
    ● PARTS LIST FOR EXPLODED VIEW (SET) 15
    ● EXPLODED VIEW (CASSETTE MECHANISM) 16
    ● PARTS LIST FOR EXPLODED VIEW (CASSETTE MECHANISM) 17-18
    ● PACKING ILLUSTRATION AND PARTS LIST 19
    ● ELECTRICAL PARTS LIST 20-23
    ● FUNCTION OF IC 24-26
  • IC BLOCK DIAGRAM 27-29
    ● OVERALL WIRING DIAGRAM 30-31

SPECIFICATIONS

\*\*Audio Section

Maximum output power ..25 watts / Rear Speakers.
7 watts / Front speakers.
Rated output power......Front : 4.5 watts / Rear 16watts per channel into 4 ohms (1 kHz, 10% total harmonic distortion)
Signal to Noise ratioBetter than 50dB
Load impedance......4 ohms
Control
BASS/TREBLE ...... ± 10 dB at 100Hz/10kHz

\*\*Tape Section

Track format4-track/2-channel system
Tape speed4.75cm/sec
Wow/Flutter0.15% nominal (WRMS)
Signal to Noise ratioBetter than 50dB

\*\*Tuner section

(FM)

Tuning range 87.5 to 108MHz at Europe 87.5 to 107.9 MHz at U.S.A.

Usable Sensitivity (30dB S/N)

MONO 10dBμ (3.2μV / 75 ohms)

Signal to noise ratio (at 60dBμ)

60 dB

Frequency response (PRE-OUT)

50 to 12,000Hz - 3dB

(AM)

Tuning range .... 522 to 1620kHz at Europe .... 530 to 1620kHz at U.S.A.

Usable Sensitivity

30dBμV

(LW) : AKF-4087

Tuning range 153 to 281kHz

Usable Sensitivity

35dBμV

\*\*General

Power requirements...... DC 12.0V / Rated: 14.4V (Usable: 10.8\~15.6V) Negative ground

Current consumption..... 7A Maximum

Dimension (W x H x D).... 188 x 58 x 172mm 7-3/8" x 2-1/4" x 6.77"

Chassis size.... 179 x 51 x 147mm

7.05" x 2" x 5.79"

Weight (Net) 1.8Kg

- Design and specifications are subject to changes for improvements without notice.

CAUTION

Do Not Use Endless Tapes

If an endless tape is used with this unit, the tape will not be wound up properly inside the cassette shell and, as a result, it will not be possible to use it again.

Also, this unit cannot eject a tape which has been inserted with its reverse side facing up.

DAEWOO AKF 4087 - Do Not Use Endless Tapes - 1

flowchart 
graph TD
    A["INT"] --> B["FM"]
    B --> C["1) FM FRONT TUG01"]
    B --> D["2) FM IF+NC IC101 LAB62M CHIP MODULE"]
    C --> E["3) AM TUNER IC201 08L1019"]
    D --> F["4) LPF 0107.0108"]
    E --> G["5) DECK MECHANISM"]
    G --> H["6) TAPE EQ AMP IC301 LA3161"]
    H --> I["AUS IC001 BA338"]
    I --> J["7) MCOM IC401 UPD-170120F-509-3BE"]
    J --> K["8) ELECTRIC VOLUME CONTROL IC501 TDA731BD BASS TIREBLE BALANCE"]
    K --> L["LINE OUT AMP IC201*OPTION"]
    K --> M["IC302 REAR (HIGH POWER) IC301 FRONT (LOW POWER)"]
    M --> N["SPEAKER OUT"]
    K --> O["DATA LINE (SCL SDA)"]
    O --> P["9) POWER IC302 REAR (HIGH POWER) IC301 FRONT (LOW POWER)"]
    P --> Q["FRONT PANNEL"]
    Q --> R["11) LED DRIVER IC901 LC75852"]
    R --> S["LC DISPLAY"]
    S --> T["12) FC MOTOR IC901"]
    T --> U["OFF"]
    U --> V["OFF"]
    V --> W["OFF"]
    W --> X["OFF"]
    X --> Y["OFF"]
    Y --> Z["OFF"]
    Z --> AA["OFF"]
    AA --> AB["OFF"]
    AB --> AC["OFF"]
    AC --> AD["OFF"]
    AD --> AE["OFF"]
    AE --> AF["OFF"]
    AF --> AG["OFF"]
    AG --> AH["OFF"]
    AH --> AI["OFF"]
    AI --> AJ["OFF"]
    AJ --> AK["OFF"]
    AK --> AL["OFF"]
    AL --> AM["OFF"]
    AM --> AN["OFF"]
    AN --> AO["OFF"]
    AO --> AP["OFF"]
    AP --> AQ["OFF"]
    AQ --> AR["OFF"]
    AR --> AS["OFF"]
    AS --> AT["OFF"]
    AT --> AU["OFF"]
    AU --> AV["OFF"]
    AV --> AW["OFF"]
    AW --> AX["OFF"]
    AX --> AY["OFF"]
  • BLOCK DIAGRAM

- ADJUSTMENTS

① TAPE ADJUSTMENT

Note : 1. Clean the playback head before adjustment

  1. Prepare the test tape MTT-114 or equivalent
  2. Balance .... Center position. Volume adjusted to 2Volts., Tone ....Max position
  3. Connections are shown in Fig. 1.

DAEWOO AKF 4087 - ① TAPE ADJUSTMENT - 1

flowchart 
graph TD
    A["Power Supply"] --> B["Ground"]
    B --> C["(BLACK)"]
    B --> D["(RED)"]
    B --> E["(YELLOW)"]
    C --> F["Rear SP Output Wire"]
    D --> F
    E --> F
    F --> G["Unit"]
    G --> H["Front Panel"]
    H --> I["L-ch"]
    H --> J["R-ch"]
    H --> K["L-ch"]
    H --> L["R-ch"]
    I --> M["VTVM"]
    J --> M
    K --> M
    L --> M
    M --> N["OUT"]
    N --> O["(BTL)"]
    O --> P["SCOPE"]

[Fig. 1]

STEPSUBJECTINPUT SIGNALMEASURE OUTPUTSETTINGADJUST POINTADJUSTMENT
1Head azimuth adjustmentMTT-114L or R CH SP output wire VTVM and scopePlaybackHead Azimuth adjustment screwTurn the azimuth screw to obtain maximum (see Fig. 2)

Clockwise Counter Clockwise Head Azimuth Adjustment screw Head Pinch Roller

Counter Clockwise Clockwise Head

【Fig.2】

② AM(MW) ADJUSTMENT

Note: 1. BAND-AM(MW)

  1. Balance.....Center position, Tone .... Max position, Volume adjusted to 2Volts
  2. Connections are shown in Fig. 3

•AM Dummy ANT R 15pF SSG 65pF r+R = 50 OHM Power Supply (GND) (BLACK) (RED) (YELLOW) ANT JACK Rear SP Output Wire OUT EXT MOD AM Unit ACC OUT FRONT Panel AUDIO OSC L-ch (F) R-ch (●) L-ch (●) R-ch (●) VTVM IN OUT (SCOPE) (BTL)

[Fig. 3]

  • AKF-4085 / 86
STEPSUBJECTFEED SIGNALMEASURE OUTPUTADJUST POINTADJUSTMENT
FROMTO
1999kHz(9kHz Step)IF Adj.999kHz, ANT input30dBu, 400Hz(30%, MOD) AM SSGANT jackand GNDL or R CH SP output wireVTVM and ScopeT04,T05(AM RF Board)When it is U.S.A Band603kHz → 600kHz999kHz → 1000kHz1404kHz → 1400kHz
2LOW ENDFreq.Tuning Adj.LOW END FREQ.ANT input,AM SSG.-L or R CH SP output wireVTVM and ScopeT03(AM RF Board)Repeat proceduresas stated in subject instep 2 & 3Ref. Fig. 6.
3HIGH ENDFreq.Tuning Adj.HIGH END FREQ.ANT input,AM SSG.-Between VT point of Fig.6& Ground of Main BoardDC Volt Meter 8VTC03(AM RF Board)
4603kHz(9kHz Step)RF Adj.603kHz, ANT input35dBu, 400Hz(30%, MOD) AM SSG.ANT jackand GNDL or R CH SP output wireVTVM and ScopeT01,T02(AM RF Board)Repeat proceduresas stated in subject instep 4 & 5Ref. Fig. 6.
51404kHz(9kHz Step)1404kHz, ANT input400Hz(30%, MOD)AM SSG.ANT jackand GNDL or R CH SP output wireVTVM and ScopeTC01TC02(AM RF Board)
6999kHz(9kHz Step)4.5MHz Adj.999kHz, ANT input35dBu, 400Hz(30%, MOD)ANT jackand GNDVCO(OSC) point ofAM BoardFrequency counterTC401(Main Board)When it is U.S.A Band999kHz → 1000kHz1404kHz → 1450kHz1499kHz → 1450kHz

Remark : In case of STEP 6 it is possible to add TC401 (Variable Capacitor)

  • AKF-4087 LW BAND
BANDALIGNMENT ITEMTUNINGTEST POSITIONSSG FREQUENCYALIGNMENTINDICATORREFERENCE
MWBAND COVER RANGE522 kHzV.T Point of AM Board522 kHzT205MAXIMUMFig. 5
1620 kHz1620 kHzTC2038VFig. 5
IF522 kHzOUTPUT450 kHzT207,T208MAXIMUMFig. 5
TRACKING603 kHzOUTPUT603 kHzT201,T203MAXIMUMFig. 5
1404 kHzOUTPUT1404 kHzTC201,TC202MAXIMUMFig. 5
4.5MHz Adj. ALIGNMENT999 kHzVCO(OSC) Point of AM Board-TC401 (Main Board)1499 kHzFig. 5
LWBAND COVER RANGE153 kHz-144 kHzT206MAXIMUMFig. 5
TRACKING220 kHzOUTPUT220 kHzT202,T204MAXIMUMFig. 5

Remark: In case of 4.5MHz Adj. it is possible to add TC401 (Variable capacitor)

③ FM ADJUSTMENT

Note : 1. BAND - FM

2 Balance..... Center position, Tone .... Max position, Volume adjusted to 2Volts
3. Connections are shown in Fig. 4

•FM Dummy ANT 45 SSG 60 r = 75 OHM STEREO SG OUT OUT AUDIO OSC FM SSG EXT MOD OUT FM Dummy Power Supply (GND) (BLACK) (RED) (YELLOW) ANT JACK Unit Front Panel Rear SP Output Wire L-ch + R-ch + L-ch + R-ch + VTVM IN OUT (BTL) SCOPE

[Fig. 4]

STEPSUBJECTFEED SIGNALMEASURE OUTPUTADJUST POINTADJUSTMENT
FROMTO
1IF adjust98.1 MHz, ANT input 60 dBu, 1KHz (30%, MOD) FM SSGANT jack and GNDThe voltage between pin 29 and pin 33 of IC101T101Adjust for ±0.05V Fig. 7
2MPX IC Separation Control98.1 MHz, ANT input 60 dBu, 1KHz (L+R=45% L-R=45% PILOT=10% MOD)ANT jack and GNDL or R CH SP output wire VTVM and scopeRV05LEFT/RIGHT Separation MAX. Fig. 7

④ ADJUSTMENT LOCATIONS

● AKF-4087 MW/LW IF,RF BOARD
T207 T208 T204 TC202 TC203 TC203 T205 T206 T202 T201 MW/LW SELECT OUT VCO SD B+ GND AGC VT LOC ANT

[Fig. 5]

● AKF-4085 / 86 IF, RF BOARD
T05 B K TC02 Y W TO4 TC03 W H T02 G N T01 R D TO3 TC01 OUT VCO SD B+ GND AGC VT LOC ANT

[Fig. 6]

SN: 97TB5280FM-00 R12 C18 R11 C20 R10 C19 R06 C16 C14 R05 C17 R06 R07 C12 R05 PIN 29 C08 C06 R02 R13 R03 C04 C22 C21 C01 IC101 777 DC VOLT METER

[Fig. 7]

CHEMATIC DIAGRAM

ANT KCF-201 IF OUT FM FRONT END TU001 GND VT AGC VCO L-201 QD04 KRC111M C203 150:3.3 D32S 22A R108 QD03 KTC3199Y R107 QD04 KRC111M C206 150:3.3 D32S 22A R108 QD03 KTC3199Y R107 QD04 KRC111M C206 150:3.3 D32S 22A R108 QD03 KRC111M C206 150:3.3 D32S 22A R108 QD03 KRC111M C206 150:3.3 D32S 22A R108 QD03 KRC111M C206 150:3.3 W/WRAM PACK IC301 LA3161 IC001 BA3.3B IC002 HA 12135A IC002 KA1287T IC002 KA1287T IC002 KA1287T IC002 KA1287T IC002 KA1287T IC002 KA1287T IC002 KA1287T IC002 KA1287T IC002 KA1287T IC002 KA1287T

CHIP MODULE IC101 28 37 28 33 24 23 22 21 20 19 LA186.2M C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C40 C41 C42 C43 C44 C45 C46 C47 C48 C49 50 51 IC401 UPD17012GF-529-3BE IC901 LC75852 LCD V-ON V-UPR V-UPR V-UPR V-UPR V-UPR V-UPR V-UPR V-UPR V-UPR V-UPR V-UPR V-UPR V-UPR V-UPR V-UPR V-UPR V-UPR V-UPR V-UPR V-UPR V-UPP V-UPP V-UPP V-UPP V-UPP V-UPP V-UPP V-UPP V-UPP V-UPP V-UPP V-UPP V-UPP V-UPP V-UPP V-UPP V-UPP V-UPP V-UPP V-UPP V-UP P V-UP P V-UP P V-UP P V-UP P V-UP P V-UP P V-UP P V-UP P V-UP P V-UP P V-UP P V-UP P V-UP P V-UP P V-UP P V-UP P V-UP P V-UP P V-UP P V-UP SLS V-UP SLS V-UP SLS V-UP SLS V-UP SLS V-UP SLS V-UP SLS V-UP SLS V-UP SLS V-UP SLS V-UP SLS V-UP SLS V-UP SLS V-UP SLS V-UP SLS V-UP SLS V-UP SLS V-UTS130000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

● PARTS LOCATION ON PC BOARD

① MAIN PCB (Parts Side)

DAEWOO AKF 4087 - ● PARTS LOCATION ON PC BOARD - 1

⑤ EVR PCB (Parts Side)
CDL CDR B+ AM IN AM IN C510 C507 C508 I0C0 R512 R501 C511 C506 JW502 R509 C509 C505 IC501 AKF-4086 SN:97T65408VR-00 R509 R510 C512 C516 C514 C520 C505 C521 C513 C514 C519 C522 R504 R503 R508 C508 C507 C503 C502 C504 TAPE L TAPE R GND

⑥ DOLBY & AMS PCB (Parts Side) : AKF-4086 only
C015 R009 C009 C012 R013 C008 C010 R012 Q004 SN197T65468DB C016 R010 C002 IC001 C006 R008 R005 C003 C001 C004 C007 Q001 CW001 R017 C011 JW06 JW05 JW01 R008 AKF-4086 LRRD R014 C013 R007 R011 R015 Q004

● EXPLODED VIEW (SET)
Exploded view diagram of a computer system with labeled components such as S14, S17, and S18

Exploded view diagram of a device with labeled components such as S1, S2, S3, and S15, showing assembly relationships and part numbers.

● PARTS LIST for EXPLODED VIEW (SET)

RefPART NO.DESCRIPTION
197T16053GDWINDOW LCD ACRYL
297T13579GDKNOB SELECTOR PC
397T13580GDKNOB VOLUME PC
497T13575GDKNOB FUNCTION 3 PC
597T13573GDKNOB FUNCTION 1 PC
697T01031GDCABINET FRONT ABS XR-401
797T13569GDKNOB BAND PC
897T1357710KNOB RELEASE ABS XR-401
997T3007100SPRING KNOB DETA PW PI0.3
1097T13576GDKNOB POWER PC
1197T3006900SPRING KNOB EJ PW PI0.3
1297T1357110KNOB FF ABS XR-401
1397T1357810KNOB REW ABS XR-401
1497T13574GDKNOB FUNCTION 2 PC
1597T13572GDKNOB FUNCTION PC
1697T1357010KNOB EJECT ABS XR-401
1797T0422200COVER LCD ET T0.3
18----LCD
1997T9604310SHEET LCD TREPAL PAPER
2097T2213400REFLECTOR LCD PMMA
2197T2304500HOLDER LCD PC
2297T0420520CAP LAMP OPTION
2397T0420530CAP LAMP OPTION
2497T0103010CABINET BACK PC LEXAN
2597T13421GDKNOB PULL ABS XR-401
2697T3007400SPRING PULL PW PI0.35
2797T14085GDE.S.C ABS XR-401
2897T2606000HOOK B STS T0.4
2997T2605700HOOK AS SECC
3097T18042GDDOOR CASSETTE PC
3197T3005610SPRING DOOR STS-304W PI0.25
3297T4405810HEAT SINK AS ADC 12, SECC
3397T2424330BRACKET CONN SECC (ISO TYPE)
3497T2418830BRACKET DECK B SECC
3597T0619730CHASSIS SIDE SECC
3697T63019A0JACK ANT 9.2X15X30mm
3797T2428730BRACKET DECK SECC T1.0
3897T0417700CAP FF LEVER ABS XR-401
3997T0417900CAP EJ LEVER B ABS XR-401
4097T6007100DECK MECHANISM SM-909PL(AKF-4085)
97T6007200DECK MECHANISM SM-909AL(AKF-4086)
4197T0423930COVER TOP SECC T0.6
4297T0423630COVER BOTTOM SECC T0.6
4397T0911410PLATE INSUL POLYESTER T0.25
4497T0617830FRAME MOUNTING SECC T0.6
4597T2426930BRACKET 9PIN CONN SECC(9PIN TYPE)
RefPART NO.DESCRIPTION
4697T2409930(OPTION, AKF-4086)BRACKET CONN (9PIN TYPE)(OPTION, AKF-4085)STOPPER CORD SBHG1
4797T5700530
4897T6400130TERMINAL EARTH SECC
P197TC072000PCB MAIN AS
P297TC072100PCB FRONT AS
P397TC072300PCB POWER AS
P497TC072200PCB VR AS
P597TC055600PCB FM ONE CHIP AS
P697TC029600PCB TUNER AS
P797TC072400PCB ISO AS
P897TC072500PCB DOLBY AS
P997TC072600PCB LINE OUT AS
S17173201212SCREW TAPPTITE
S27173200611SCREW TAPPTITE
S37173300611SCREW TAPPTITE
S47173300611SCREW TAPPTITE
S57173300611SCREW TAPPTITE
S67173300611SCREW TAPPTITE
S77173300611SCREW TAPPTITE
S87173300611SCREW TAPPTITE
S97171301211SCREW TAPPTITE
S107173300611SCREW TAPPTITE
S1197T3103610SCREW LOCK
S127003300811SCREW MACHINE
S137173300611SCREW TAPPTITE
S147173300611SCREW TAPPTITE
S157173300611SCREW TAPPTITE
S167173300611SCREW TAPPTITE
S177175300611SCREW TAPPTITE
S187173260812SCREW MACHINE
B197T3100310BOLT HEX
N17372300211NUT SQUARE
N27391500011NUT HEX
4997T0918000PLATE POWER POLYESTER T0.25
5097T5601100INSUL-BRK PVC T0.3
5197T5601200INSUL-FRONT POLYESTER T0.25
5297T2431900BRACKET FRONT SBHG T0.5
5397T2431400BRACKET PCB STS T0.4

Technical schematic diagram of a mechanical assembly with numbered components and labeled parts

● EXPLODED VIEW (CASSETTE MECHAINSM)

● PARTS LIST for EXPLODED VIEW (CASSETTE MECHANISM)

Ref.PART NODESCRIPTION
1R416C1ASS'Y MAIN CHASSIS-4(P) DL
1-10930SHAFT PINCH ROLLER (R)
1-20929SHAFT PINCH ROLLER (L)
1-30922SHAFT MIDDLE PULLEY
1-4RL01B0METAL CAPSTAN (B-2)
1-50920A0PIN GUIDE (B)
1-60927SHAFT F.R LOCK LEVER
1-71694SHAFT F.R LEVER "B2"
1-83194A0SHAFT F.R LEVER(D)
1-9RF09A0SHAFT MOVEMENT ARM (B)
1-10RF10A0SHAFT CASSETTE LOCK LEVER
2R406C1ASS'Y CHASSIS GEAR(P)
2-1RF05A0SHAFT REEL-2
2-2RF01A0SHAFT FEED GEAR A-2
2-3RF02A0SHAFT FEED GEAR B-2
2-4RF03A0SHAFT FEED GEAR C-2
2-5RF06A0SHAFT PROGRAM CAM-2
2-6RF07A0SHAFT PROGRAM CAM LOCK LEVER
2-7RF04A0SHAFT DRIVING PULLEY-2
32365ASS'Y EJECT LEVER (C)
3-1RF11A0SHAFT EJECT LEVER(C-2)
42773ASS'Y EJECT LEVER(A)
4-10942SHAFT EJECT LEVER
5R417B1ASS'Y EJECT LEVER "B-3"
62003ASS'Y PINCH ROLLER ARM(R)
72002ASS'Y PINCH ROLLER ARM(L)
8R409A1ASS'Y PLAY ARM-2
9R411B1ASS'Y BASE HEAD-5
9-11961SHAFT HEAD BASE "B2"
10ASS'Y REEL
11RP23B0HOLDER CASSETTE(B-2)
12RP21C0ARM HOLDER CHASSIS(B-3)
13RP20A0ARM MOVEMENT(B)
14RI03A0LEVER PG CAM STOP
15RP24A0GUIDE EJ LEVER(B-2)
16RP19B0LEVER CASSETTE LOCK(B-2)
17RP26A0LEVER HEAD SLIDE(C)
18RP25A0STOPPER HEAD(B)
19RP01B0LEVER PLAY IDLER
200886A0LEVER PROGRAM(B-2)
210899LEVER F.R LOCK
22RP17B0ARM PROGRAM(B-2)
23RP47A0LEVER REW(L)
24RP47B0LEVER FF(L)
253247LEVER PROGRAM(A4)
Ref.PART NODESCRIPTION
260918CAM PROGRAM
270915GEAR PROGRAM SENSOR CAM
280916SENSOR P CAM
29RJ07A0GEAR FEED(D)
30RI10A0SENSOR REEL"C"
30-10907A0SENSOR REEL"D"
31RI01A0PULLEY DRIVING-2
32RJ01A0GEAR FEED A-2
33RJ05A0GEAR FEED (B)
34RJ06A0GEAR FEED (C)
350913PULLEY MIDDLE
360908GEAR PLAY
373287HOLDER GUIDE(B)
38RI07A0EJECTOR(B-2)
39MOTOR
39-1PULLEY MOTOR
40HEAD P
412991A'SSY SW SLIDE
42SWITCH QUICK ACTION
431841A'SSY FLYWHEEL
440974BELT MAIN 1TX122
450975BELT T/U 1.2TX20.5
460041SHAFT PLAY IDLER
47RI08A0ROLLER SHAFT HEAD BASE
480932COLLAR PROGRAM CAM
490962ROD EJECT
500966SPRING EJECTOR
51RI02B0LVR P SENSOR(C)
520949SPRING SENSOR TENSION
532733A0ANGLE SWITCH(B)
54RS02B0SPRING REEL D
55RS05A0SPRING CASS LOCK LEVER(B)
560957SPRING EJECT LEVER
570965SPRING EJECT LEVER(B)
58RT07A0SPRING HEAD SLIDE LEVER(B-2)
59RS03A0SPRING HEAD STOPPER
60RT01A0SPRING PLAY GEAR ARM(B)
61RT02A0SPRING PINCH ROLLER(B)
623290B0PANEL HEAD
630953SPRING SWITCH
640958SPRING LOCK LEVER
651835SPRING F.R LEVER
66RS04A0SPRING MOVEMENTARM(B)
67LW05A0E-RING 0.4TX2X6.5
68RR01A0SCREW COLLAR A-2
692765SCREW CAMERA T/TITE M2X3
701160SACREW BH/T/TITE M2X8
710971SCREW CAMERA M2X3
723289SCREW PH M3X11
733288SCREW CAMERA W/H M2X9.8
741957SCREW CAMERA M2X5
751176SCREW BH T/TITE M2X3
763197SCREW FH M2X2.7
770350E-RING 0.4TX1.5X4
782239E-RING(SPECIAL)0.3TX1.5X3.2
793195SCREW COLLAR(C)
80RP40A0PLATE PROGRAM
810980P.S.W(C) 0.4TX1.6X3.2
822931P.S.W(C) 0.5T1.6X5
Ref.PART NODESCRIPTION
830989P.S.W(C) 0.25T X 1.2 X 4
840091P.S.W(C) 0.35T X 1.2 X 3.5
850986P.S.W(C) 0.3T X 1.6 X 5
860987P.S.W(C) 0.25T X 1.85 X 5
872933P.S.W 0.35T X 1.85 X 3.2
881830LEVER F.R LOCK(B)
89SWITCH MUTE
903008SCREW WH M1.7 X 4
91RT03B0SPRING CASSETTE EJECT(B-2)
920863P.S.W(C) 0.25T X 1.2 X 3
93RR07A0SCREW FH T/TITE 2 X 4
94RR02A0SCREW COLLAR B-2
95RS07A0SPRING REW LEVER
96RP40A0PLATE PROGRAM

Technical diagram of an electronic device with exploded view and component labels in Chinese

● PACKING UTILSTRACTION and PARTS LIST

● ELECTRICAL PARTS LIST

[MAIN SECTION]

RefPART NO.DESCRIPTIONREMARKS
CN30597T6300400SOCKET DIN PCB TYPE 8PIN DIN
CF1015PE107MS2A5PE107MJA1FILTER CERA SFE107MS2-AFILTER CERA SFE107MJA *OPTION
CW30297T62129B0CONN 14P DETACHABLE PLUG ANGLE
CT4015XEZ4R500ECRYSTAL QUARTZ HC-49/U 4.5MHz 12PF
D430DS1M191VR-LED SIM191VR
D105,106,202DKTZ10B--DIODE ZENER MTZ10V ZENER
IC301LA3161--IC LA3161
IC3021TDA7394--IC AUDIO POWER TDA7394
IC3031Z1A78S05PIC REGULATOR KIA78S05P
IC3041BA3121--IS ISOLAION BA3121
IC40117012GF529IC CPU uPD17012GF-529-3BE
L2015LL479K03KCOIL INDUCTOR 4.7uH K 03
L3015LC102P226COIL CHOKE EI-24MM 1MH
L302,3035LL102K03KCOIL INDUCTOR 1000uH K 03
Q101,102,203Q107,108,201Q312,313,203Q314TZTC3199Y-TR KTC3199Y
Q104,202TZ2SD1919RTR 2SD1919R
Q103,311TZRC102M--TR KRC102M
Q105,106,204Q302,303,304Q402,403,316TZRC111M--TR KRC111M
Q301TZ2SB1240RTR 2SB1240R
Q305,305,307Q308TZRC231M--TR KRC231M
Q310TKTB1366Y-TR KTB1366Y
Q404,315TZTA1267Y-TR KTA1267Y
TU00197T76008P097T760080097T76010BVTUNER FM KCF201VATUNER FM KCF204V *OPTIONTUNER FM KCF201BV-A

[ FRONT SECTION ]

RefPART NO.DESCRIPTIONREMARKS
CN30297T62129A0CONN 14P DETACHABLE SOCKET
D901,902,903D1MN10-BDIODE CHIP IMN10
D904,905,906D907,908HDKDS181-EDIODE CHIP KDS181
IC9011LC75852--IC DRIVER LC75852
LCD0197T0L0722297T0L07225LCD KXN17142DAN NEGATIVELCD KXN17140DAP POSITIVE
LD01DSPR39MVW3LED SPR-39MVW3
PL01,02,03,0497T82008B0LAMP 14V 60MA D3.0
Q901TKRA111S--TR CHIP KRA111S
Q902TKRC112S--TR CHIP KRC112S
Q903,904TKTA1663Y-TR CHIP KTA1663Y
SW01,02,03,04SW05,06,07,08SW09,10,11,12SW13,14,15,16SW17,18,19,205S50101317SW TACT 1C-1P EVQPJH 04K 160G

[POWER SECTION]

RefPART NO.DESCRIPTIONREMARKS
IC8011TDA1519--IC AUDIO POWER TDA1519
Q801,802TZRC231M--TR KRC231M

【LINE OUT SECTION】

RefPART NO.DESCRIPTIONREMARKS
IC7011MC4558C--IC OP AMP MC4558C
Q701,702TZRC231M--TR KRC231M

[ EVR SECTION ]

RefPART NO.DESCRIPTIONREMARKS
IC5011TDA7318D-IC AUDIO TDA7318D

[AM SECTION: AKF-4087 (when it is LW BAND)]

RefPART NO.DESCRIPTIONREMARKS
CF215PBFU450C4CERAMIC FILTER BFU450C4N
CF225PCFM450BLCERAMIC FILTER AMC FM2-450BL
D01,03,05,06D1SS133--DIODE 1SS133
D02,04,07DKV1235Z--DIODE KV1235Z
IC2011DBL1019--IC DBL1019 ( LA1135 )
L215LL220K433COIL LAL03NA 220K
L225LL560K432COIL LAL03NA 560K
Q01,02TKTC3199Y-TR KTC3199Y
Q03TZSK184BL-TR 2SK184BL
Q04TKTC380-0-TR KTC380TM-O
Q05TZSK184BL-TR 2SK184BL
Q06T2SC2021Q-TR 2SC-2021Q
Q07TZRC1211--TR KRC1211
TC201,202,20397576501G0TRIMMER TZ03R200FR
T2015LA238J450COIL A7BR-K5562UH-KR
T2025LA289J448COIL 126LN-K5081RS-KR
T2035LA238J451COIL A7BR-K5563BQG-KR
T2045LR289J449COIL 126LN-K5082RS-KR
T2055L0128J453COIL A7BR-K5565QH-KR
T2065L0298J452COIL A7BR-K5564QH-KR
T2075107ABK149IFT 7MC-K5300N
T2085107AYW143IFT 7MC-4505N-KR

▲ Receiving frequency, channel spacing intermediate frequency.

AREAITEM BANDRECEIVING FREQUENCYCHANNEL SPACINGINTERMEDIATE FREQUENCY
EuropeFM87.5 to 108MHz50 kHz10.7 MHz
MW522 to 1620kHz9 kHz450 kHz
LW153 to 281kHz1 kHz450 kHz
ChinaFM87.0 to 108MHz50 kHz10.7 MHz
MW531 to 1602kHz9 kHz450 kHz
Australia, Middle & Near EastFM87.5 to 108MHz100 kHz10.7 MHz
MW531 to 1602kHz9 kHz450 kHz
USA 1FM87.5 to 108MHz100 kHz10.7 MHz
MW530 to 1620kHz10 kHz450 kHz
USA 2FM87.5 to 107.9MHz200 kHz10.7 MHz
MW530 to 1620kHz10 kHz450 kHz
USA 3FM87.5 to 107.9MHz200 kHz10.7 MHz
MW531 to 1710kHz10 kHz450 kHz

▲ LW select ( D417 )

0: LW BAND DISABLE

1: LW BAND ENABLE

▲ TIMER select (D418) (DISPLAY)

0 : TIMER FUNCTION DISABLE

1: TIMER FUNCTION ENABLE (DOUBLE FUNCTION) • see LC75853 key matrix

▲ 2 Color select (D419) (LOUD KEY)

0:2 COLOR ILLUMINATION DISABLE

1:2 COLOR ILLUMINATION ENABLE (DOUBLE FUNCTION)

▲ CDC/AUX IN select (D420) (CDC KEY)

0: CDC MODE

1 : AUX IN MODE

▲ DOUBLE 1,2 select

SYMBOLDESCRIPTION
DOUBLE 1(D421)DOUBLE 2(D422)
DOUBLE 1DOUBLE 2MTLDOLBYAMS
00000
01---
100--
110-0
DOUBLE 1DOUBLE 2MTLDOLBYAMS
00000
01---
100--
110-0

▲ 12/24 HOUR select (D423) 0:24 HOUT MODE

1:12 HOUR MODE

▲ CLOCK USE select (D424) 0: CLOCK FUNCTION DISABLE

1 : CLOCK FUNCTION ENABLE

▲ AUTO 500 select ( D428 ) 0 : Manual tuning and auto-tuning. Frequency is incremented or decremented by one channel each time the switch pressed. Automatic tuning (seek) begins with the next channel when the key is pressed for 0.5 seconds or longer.

1: Manual tuning only. Frequency is incremented or decremented by one channel each time the switch is pressed. Tuning is manually fast-forwarded when it is held pressed for 0.5 seconds or longer.

- IC BLOCK DIAGRAM

natural_image Illustration of an integrated circuit chip with pin numbering (no text or symbols)

DAEWOO AKF 4087 - - IC BLOCK DIAGRAM - 1

flowchart 
graph TD
    subgraph Input
        IN1["IN1"] --> 10
        MUTE1["MUTE1"] --> 3
        STDBY["STDBY"] --> 12
        VCC1["VCC1"] --> 13
        VCC2["VCC2"] --> 5
        MOND["MOND"] --> 7
        MUTE2["MUTE2"] --> 4
    end

    10 --> VCC_SENS["VCC SENS"]
    3 --> REF.[REF.]
    REF --> REF
    REF --> RIN["RIN"]

    12 --> VCC_SENS
    13 --> VCC_SENS
    5 --> REF
    REF --> REF
    REF --> RIN["RIN"]

    7 --> MOND
    4 --> MUTE2
    6 --> IN2["IN2"]

    14 --> PW_AMP["PW AMP"]
    15 --> S.C_PROTECT["S.C. PROTECT"]
    1 --> PW_AMP["PW AMP"]
    1 --> S.C_PROTECT["S.C. PROTECT"]
    1 --> PW_AMP["PW AMP"]
    1 --> S.C_PROTECT["S.C. PROTECT"]
    1 --> PW_AMP["PW AMP"]
    1 --> S.C_PROTECT["S.C. PROTECT"]
    1 --> PW_AMP["PW AMP"]
    1 --> S.C_PROTECT["S.C. PROTECT"]
    1 --> PW_AMP["PW AMP"]
    2 --> OUT2["OUT2(-)"]
    8 --> GND["GND"]
    11 --> SVR["SVR"]

    style TDA7394 fill:#f9f,stroke:#333,stroke-width:2px
    style IN fill:#ccf,stroke:#333,stroke-width:2px
    style MUTE1 fill:#ccf,stroke:#333,stroke-width:2px
    style STDBY fill:#ccf,stroke:#333,stroke-width:2px
    style VCC1 fill:#ccf,stroke:#333,stroke-width:2px
    style VCC2 fill:#ccf,stroke:#333,stroke-width:2px
    style MOND fill:#ccf,stroke:#333,stroke-width:2px
    style MUTE2 fill:#ccf,stroke:#333,stroke-width:2px
    style IN2 fill:#ccf,stroke:#333,stroke-width:2px
    style IN fill:#ccf,stroke:#333,stroke-width:2px
    style MUTE1 fill:#ccf,stroke:#333,stroke-width:2px
    style STDBY fill:#ccf,stroke:#333,stroke-width:2px
    style VCC1 fill:#ccf,stroke:#333,stroke-width:2px

■ TDA7318D (EVR) : IC501
DAEWOO AKF 4087 - - IC BLOCK DIAGRAM - 2

flowchart 
graph TD
    A["LEFT INPUTS"] --> B["L1"]
    A --> C["L2"]
    A --> D["L3"]
    A --> E["L4"]
    F["RIGHT INPUTS"] --> G["R4"]
    F --> H["R3"]
    F --> I["R2"]
    F --> J["R1"]
    K["VOUT(R)"] --> L["INPUT SELECTOR + CAIN"]
    M["ACND"] --> N["SUPPLY"]
    O["CREF"] --> P["OUTPUT(R)"]
    Q["IN(R)"] --> R["OUT(R)"]
    S["IN(L)"] --> T["OUT(L)"]
    U["VOL"] --> V["BASS"]
    W["BOUT(L)"] --> X["TREBLE"]
    Y["RB"] --> Z["TREBLE"]
    AA["SPWR ATT"] --> AB["MUTE"]
    AC["SPWR ATT"] --> AD["MUTE"]
    AE["SPWR ATT"] --> AF["MUTE"]
    AG["SPWR ATT"] --> AH["MUTE"]
    AI["SPWR ATT"] --> AJ["MUTE"]
    AK["SPWR ATT"] --> AL["MUTE"]
    AM["SPWR ATT"] --> AN["MUTE"]
    AO["SPWR ATT"] --> AP["MUTE"]
    AQ["SPWR ATT"] --> AR["MUTE"]
    AS["SPWR ATT"] --> AT["MUTE"]
    AU["SPWR ATT"] --> AV["MUTE"]
    AW["SPWR ATT"] --> AX["MUTE"]
    AY["OUT LEFT FRONT"] --> AZ["OUT LEFT FRONT"]
    BA["OUT LEFT REAR"] --> BB["OUT LEFT REAR"]
    BC["SCL"] --> BD["SDA DIGGND"]
    BE["SCL"] --> BF["SDA DIGGND"]
    BG["OUT RIGHT FRONT"] --> BH["OUT RIGHT FRONT"]
    BI["OUT RIGHT REAR"] --> BJ["OUT RIGHT REAR"]

● WIRING DIAGRAM

① ISO CONNECTOR TYPE
ISO PCB POWER PCB CN802 CD JACK WO5 BK FM ONE CHIP PCB ANT MAIN PCB VOLUME PCB CN303 AM TUNER CW301 CN301 SHIELD CN303 CN Bk MOTOR BL OR SW WO3 BLACK BR MUTE SW CN303 ISO CONNECTOR

DAEWOO AKF 4087 - ● WIRING DIAGRAM - 2ABC
4.yellow...back-up dc+12v5.blue...remote dc+12v(power ant)6.Dimmer (option)7.red...power supply8.black...ground1.violet...rear right(+)2.violet/black...rear right(-)3.gray...front right(+)4.gray/black...front right(-)5.white...front left(+)6.white/black...front left(-)7.green...rear left(+)8.green/black...rear left(-)C OTHERS5.black...ground6.orange...12v preamp(+)8.red...preamp R-ch10.white...preamp L-chDAEWOO AKF 4087 - ● WIRING DIAGRAM - 3

②9P CONNECTOR TYPE
9 PIN CONNECTOR POWER PCB CNJ02 CD JACK WOS BK FM ONE CHIP PCB ANT MAIN PCB AM TUNER CW301 CW302 VOLUME PCB CNJ03 CNJ303 SHIELD CNJ301 - 9 PIN CONNECTOR 1.RED...12V DC(+) 2.PINK...MEMORY 12V DC(+) 3. BLACK...GROUND(-) 4. BLUE...LEFT FRONT SPEAKER(+) 5. BROWN...LEFT REAR SPEAKER(+) 6. BROWN with BLACK...LEFT REAR 7. GREEN...RIGHT FRONT SPEAKER(+) 8. WHITE...RIGHT REAR SPEAKER(+) 9. WHITE with BLACK...RIGHT REAR •RIGHT/LEFT FRONT SPEAKER(-)....

9 PIN CONNECTOR

  1. RED...12V DC(+)
    2.PINK...MEMORY 12V DC(+)
  2. BLACK...GROUND(-)
  3. BLUE...LEFT FRONT SPEAKER(+)
  4. BROWN...LEFT REAR SPEAKER(+)
  5. BROWN with BLACK...LEFT REAR SPEAKER(-)
  6. GREEN...RIGHT FRONT SPEAKER(+)
  7. WHITE...RIGHT REAR SPEAKER(+)
  8. WHITE with BLACK...RIGHT REAR SPEAKER(-)
    •RIGHT/LEFT FRONT SPEAKER(-)....CONNECT TO GROUND(-)
Manual assistant
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Product information

Brand : DAEWOO

Model : AKF 4087

Category : Car radio