A-509R - Audio Amplifier PIONEER - Free user manual and instructions

USER MANUAL A-509R PIONEER

This service manual is intended for qualified service technicians ; it is not meant for the casual do-it- yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician. WARNING This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to cause cancer, birth defects or other reproductive harm. NOTICE (FOR CANADIAN MODEL ONLY) Health & Safety Code Section 25249.6 - Proposition 65 Fuse symbols EF (fast operating fuse) and/or EH (slow operating fuse) on PCB indicate that replacement parts must be of identical designation. REMARQUE (POUR MODÈLE CANADIEN SEULEMENT) Les symboles de fusible Æ- (fusible de type rapide) eÿou = (fusible de type lent) sur CCI indiquent que les pièces de remplacement doivent avoir la même désignation. — (FOR USA MODEL ONLY)

1. SAFETY PRECAUTIONS

The following check should be performed for the continued protection of the customer and service technician.

LEAKAGE CURRENT CHECK

Measure leakage current to a known earth ground (water pipe, conduit, etc.) by connecting a leakage current tester such as Simpson Model 229-2 or equivalent between the earth ground and all exposed metal parts of the appliance {input/output terminals, screwheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120V AC 60Hz outlet and turn the AC power switch on. Any current measured must not exceed 0.5mA.

Leakage Reading should not be above Device current | 0.5mA under tester test Testal exposed metal surfaces (©) Also test with lug reversed L'Earth {Using AC adapter 7 ground Plug as required) AC Leakage Test

2. PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in the appliance have special safety related characteristics. These are often not evident from visual inspection nor the protection afforded by them necessarily can be obtained by using replacement components rated for voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this Service Manual. Electrical components having such features are identified by marking with a A on the schematics and on the parts list in this Service Manual. The use of a substitute replacement component which does not have the same safety characteristics as the PIONEER recommended replacement one, shown in the parts list in this Service Manual, may create shock, fire, or other hazards. Product Safety is continuously under review and new instructions are issued from time to time. For the latest information, always consult the current PIONEER Service Manual. À subscription to, or additional copies of, PIONEER Service Manual may be obtained at a nominal charge from PIONEER.

NOTES: ® Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. The A mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. + Screws adjacent to w mark on the product are used for disassembly.

Mark No. Description Part No. 1 Operating Instructions ARB7238 (English) 2 Operating Instructions ARC7326 (German)

A PHONO (O——| AF ASSY ON/OFF

TAPEI REC 200nV/1konm L(O TAPEI PLAY . 200nV/SkKohn e CNIe2 L(O—+ TAPEZ REC 220nV/1Konm . R(O—+ L(O— TAPEZ MONITOR 200nV/S2Kohn . r(O— IOLE ADU. (Loh) EMar assy (AWX7631) TEST POINT (Leh) EST POINT (Roh) o © © 0

A-509R Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST".

| VR5O1 (4/4) ACX 1898 [

3.5 FRONT R, AC PRIMARY, HEADPHONE and POWER SW ASSYS

AC PRIMARY ASSY a | (AWX7051) onez (4) * TT | Eau : SJ POWER TRANSFORMER T1 | AEK1057 A 1 êe e. | É E : AE) | | (È dE | …f se (E = F2 nes [| J LaGvoezl m'a) UT LE D | & LEE Le fo LL J

+ NOTE FOR FUSE REPLACEMENT

2. capaerroRs 2.1/2 vF

INDICATED INCAPACITY (ui

INDIGATED WITHOUT VOLT/

VOLTAGE (M) UNLESSOTHERWISE NOTED p:0F. TAu2. 28 0627

1. Partnumbers in PCB diagrams match those in the schematic

2. A comparison between the main parts of PCB and schematic

diagrams is shown below. SymbolPCE | Symbolin Schema Diagrams Diagrams PartName BCEBCE Transistor BCE BCEBCE Transistor ÊCE with resistor D6S06GS Field effect DGS transistor 6DS6GDS Mos Field effect transistor Gssfooox : L ÎT L Resistor array 3-terminal regulator

3. The parts mounted on this PCB include all necessary parts

for several destination For further information for respective destinations, be sure to check with the schematic diagram

4. Viewpoint of PCB diagrams

© 2 . 74 4 8 # 4 ne ANAL © = k | : a O\E = Z —

4.2 FRONT L and VOLUME ASSYS

4.4 AC PRIMARY, HEADPHONE and POWER SW ASSYS

NOTES: eParts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. eThe À mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. When ordering resistors, first convert resistance values into code form as shown in the following examples. Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%, and K=10%). 560Q — 56x10 — 561 47kQ — ATXx10 — 473 05Q + R50 .

Ex.2 When there are 3 effective digits (such as in high precision metal film resistors). 5.62kQ — 562xX10 > 5621 _ ns ……… RN1/4PC (51612100 F Mark No. Description Part No. Mark No. Description Part No. NSP. AF COMPLEX ASSY AWK7625 D455 MTZ] 4.7 AF ASSY AWX7631 D457-D460 S5688G

VOLUME ASSY AWX7055 COILS

A-509R Mark No. Description Part No. Mark No. Description Part No. COILS

6.1 IDLE CURRENT ADJ USTMENT

© CAUTION : Heatsinks' (0323-0326) DC level is equal to +B or-B. Don't touch them or you will be electricary chocked.

. Connectthe measuring instrument as Fig.6-L. (R415 or R416) . Setthe VOLUME CONTROL to minimum, BASS TONE CONTROL to center, TREBLE TONE CONTROL to center and BALANCE CONTROL to center. Set VR301 and VR302 to minimum.

3. Setthe POWER switch to ON.

4. Adjust VR 301 (VR 302) so that the voltage between both sides of R415 (R416) becomes 16mV+1mV. (Within 10 seconds from when the relay is turned ON) . Ages for 7 minutes

6. Adjust VR 301 (VR 302) so that the voltage between both sides of R415 (R416) becomes 11mV#1mV.

AF ASSY Ra15 /l N R416 TEST ©! R4B © © Rr44 (© W150 W212 N Heat Sink VR301 R417 VR302 Heat Sink Heat Sink [cn204 Fig.6-1 Adjustment Method

+ Pin Assignment (Top view) A-509R + The information shown in the list is basic information and may not correspond exactly to that shown in the schematic diagrams.

(D POWER (Ji OFF/ m ON) switch Press to tum power to the unit ON and OFF. @) STANDBY/ON switch/indicator This is the switch for electric power. This switch does not function unless the POWER JA OFF/ ON switch is setto ON. ON : When set to the ON position, power is supplied and the unit becomes operational. When set to the STANDBY position, the main power flow is cut and the unit is no longer fully operational. À minute flow of power feeds the unit to maintain operation readiness. When the STANDBY indicator lights, the unit is in STANDBY. STANDBY : NOTE: When performing timer recording with this unit, be sure to set the POWER STANDBY/ON switch to ON. G@) Remote control sensor window @ VOLUME control Use to adjustthe volume level. NOTE: The TONE effect functions regardless of volume levels.

VOLUME indicator INPUT SELECTOR knob/indicators Tum the knob clockwise or counterclockwise so that the indica- tor lights for your desired input source. Turning the knob clock- wise causes the lit indicator to right. Turning counterclockwise causes it to left. cp : For compact disc playback with a CD player. TUNER : For AM orFM broadcast reception with a tuner. PHONO : Forrecord playback with a turntable LINE/SB _: Setto this position when listening to a program from a component connected to the LINE/SUR- ROUND BACK terminals. TAPEZ/ : For playback with a cassette deck, CD recorder CD-R/MD orMD recorder connected to the TAPE 1/CD-R/ MD terminals. TAPE 2 MONITOR button/indicator Use when there is an adaptor component (graphic equalizer, etc.) or cassette deck connected to the TAPE 2 MONITOR ter- minals. Off :_Indicator goes out when notin use On _:_Indicator lights when using the adaptor component or listening to the cassette deck NOTE: When no connections are made to the TAPE 2 MONITOR termi- nals, or when they are not in use, be sure to setthis switch to the off position. (No sound will be heard ifitis set to the on position.)

REC SELECTOR switch /indicator(For TAPE 1/CD- R/MD terminals) This switch is used to select the recording source component. The signal from the selected component is output atthe TAPE1/ CD-R/MD jacks for recording. To select a recording source com- ponent, press the REC SELECTOR switch so that the indicator ofthe desired source component lights up. When this switch is setto [TUNER] or [CD], the signal from the selected component can be recorded regardiess of the input selector switch and TAPE2 MONITOR button settings. cp :_ To record from the equipment connected to the CD terminals. TUNER : To record from the equipment connected to the TUNER terminals. SOURCE: To record from the equipment selected by the IN- PUT SELECTOR knob. OFF: Inthis position, nothing from the REC terminals of TAPE 1/CD-R/MD is output. Setto this position when notrecording; the cassette deck will be disconnected, improving sound quality. NOTE: The function selected using the INPUT SELECTOR knob will be recorded irrespective of the position of the REC SELECTOR switch (TAPE 2 MONITOR terminals). @) BALANCE control Should normally be left in the center position. Adjust the balance ifthe sound is louder from one of the speakers. lfthe right side is louder, turn toward the L (left) position and ifthe left side is louder, turn toward the R (right) position. NOTE: This control does not operate at DIRECT ON mode. @) DIRECT/SB MODE button/indicator Press and hold the button for more than 3 seconds to switch SB mode ON. (Volume indicator goes out} Press and hold the button for more than 3 seconds again to switch SB mode OFF. (Volume indicator lights) [DIRECT] Use this button when you do not wish to pass the output from input terminal equipment through the various frequency adjust- ing circuits (BASS, TREBLE, BALANCE, LOUDNESS). On : The indicator lights. The signals input through the input terminals are reproduced without passing through the various frequency adjusting circuits. This results in flat, pure sound which is a more faithful reproduction of the input source off : The indicator goes out. The signal passes through the various frequency adjusting circuits. [SB MODE] The SB mode is a special mode in which the amplifier does not accept remote control except power ON/OFF (But all of the fa- cilities can be controled by manual as same as SB mode OFF.). Fix the VOLUME control near the center position.in this mode, the set can be used as a power amplifier which amplifies the LINE/SURROUND BACK input (the function name is LINE/SB) with a input sensitivity of 1V. For example, when the set is combined with one of Pioneer's Surround Back compatible receiver, the set can be used sa the Surround Back amplifier. (For details, please refer to the instruction manual of the receiver.) A-509R 4 LOUDNESS button/indicator Use when listening at low volume level. On : The indicator lights. Boosts low and high frequencies to give added punch to playback even at low volume level. off : The indicator goes out. Should normally be left in this position. NOTE: This button does not operate at DIRECT ON mode. {D TREBLE tone control Use to adjust the high-frequency tone. The center position is the flat (normal) position. When tumed to the right, the high-frequency tone is emphasized; when tumed to the left, the high-frequency tone is de-emphasized. NOTE: This control does not operate at DIRECT ON mode. 42 BASS tone control Use to adjustthe low-frequency tone. The center position is the flat (normal) position. When tumed to the right, the low-frequency tone is emphasized: when turned to the left, the low-frequency tone is de-emphasized. NOTE: This control does not operate at DIRECT ON mode (3 PHONES jack When using headphones, insert the plug into this jack. {4 SPEAKERS B (ON/OFF) button/indicator Use this button to listen to the speaker system connected to the SPEAKERS B terminals On : The indicator lights. Sound is heard from the speaker sys- tem. off : The indicator goes out. No sound is heard from the speaker system. Set to this position when listening with headphones.

45) SPEAKERS A (ON/OFF) button/indicator

Use this button to listen to the speaker system connected to the SPEAKERS A terminals. On : The indicatorlights. Sound is heard from the speaker sys- tem. off : The indicator goes out. No sound is heard from the speaker system. Set to this position when listening with headphones.

(E)] @ (E) @ ) (D PHONO terminals (0 SPEAKERS B terminals (Right channel) @) SIGNAL GND (Turntable ground) terminal {D SPEAKERS B terminals (Left channel) @) TUNER terminals 42 AC INLET jack Connect one end of the power cord to here and the other end to a n an AC wall socket, or the AC outlet of an audio timer. (4 CD terminals If you are going in be away from home for à long period oftime, disconnect the unit from the wall socket. @®) LINE/SURROUND BACK terminals . {3 CONTROL OUT jack (6) TAPE 1/CD-R/MD REC (OUT) terminals This jack is for outputting control signals when operating other components bearing the | mark with the amplifier's remote con- @) TAPE 1/CD-R/MD PLAY (IN) terminals votuni _ {4 SPEAKERS A terminals (Left channel) @) TAPE 2 MONITOR REC (OUT) terminals h 45) SPEAKERS A terminals (Right channel) @ TAPE 2 MONITOR PLAY (IN) terminals

( CD POWER button Switches CD player power STANDBY/ON. AMP POWER button Switches the amplifier power STANDBY/ON. TAPE SELECT button Selects the cassette No. (1 to 6) for a multi-cassette changer. DECK Il button To operate Deck II, press this button before pressing the operat- ing buttons. Also, when using a single deck, press this button before pressing the operating buttons. DECK I button To operate Deck !, press this button before pressing the operat- ing buttons. DISC SELECT button Press this to select discs on a multi or twin tray compact disc player. Input selector buttons Use to select the playback source.

cp : For compact disc playback with a CD player. TUNER : For AM or FM broadcast reception with a tuner. PHONO : For record playback with a turntable. TAPE 1 : For playback with a cassette deck, CD recorder or MD recorder connected to the TAPE 1/CD-R/MD ter- minals. TAPE 2 : For playback with a cassette deck or adaptor con- nected to the TAPE 2 MONITOR terminals. LINE : For playback with a component connected to the LINE/SURROUND BACK terminal. oneer TUNER POWER button Switches TUNER power STANDBY/ON. TAPE POWER button Switches the cassette deck power STANDBY/ON. TAPE operation buttons <» : Playbackin the direction ofthe arrows. = : Stop << >» : Tape fast forward/reverse. CD player operation buttons 4 : Returns you to the start of the current track (Track search). > : Takes you to the start of the next track (Track search). = : Stop > : Play 42 STATION +, - buttons (TUNER) Calls each station number in sequence. VOLUME +, - buttons

.Increases the volume. Decreases the volume. NOTE: When the accessory remote control unit is used to operate other PIONEER components with the Fi] mar, it cannot be used to operate functions which do not correspond to the functions listed on the remote control unit.

Accessories Remote control unit Batteries (A/R 6P) Operating instructions …… Power cord(Rated current 2.5 A) . Warranty card …. NOTE: Specifications and design subject to possible modification without notice, due to improvements *__ Measured with the DIRECT/SB MODE button set to on (at DIRECT ON mode, SB OFF mode) Measured by Audio Spectrum Analyzer. Power cord (ADG1154) Remote control unit (CU-A018) (AXD7187)