User manual PIONEER A-400X

[. . . ] SAFETY INFORMATION This service manual is intended for qualified service technicians ; it is not meant for the casual do-ityourselfer. 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 Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxicant which may cause birth defects or other reproductive harm (California Health & Safety Code, Section 25249. 5). [. . . ] A subscription to, or additional copies of, PIONEER Service Manual may be obtained at a nominal charge from PIONEER. Device under test Test all exposed metal surfaces Reading should Leakage not be above current 0. 5mA tester Also test with plug reversed (Using AC adapter plug as required) Earth ground AC Leakage Test 2 A-400X 2. RS1P 1 R 0 K Ex. 2 When there are 3 effective digits (such as in high precision metal film resistors). RN1/4PC 5 6 2 1 F 5. 62k 562 × 101 LIST OF WHOLE PCB ASSEMBLIES Mark Symbol and Description Part No. Description Part No. D FRONT R ASSY SEMICONDUCTORS IC601 IC603 IC602 Q609 Q607, Q610, Q618 Q612, Q613, Q615, Q616 Q601-Q606, Q608, Q614, Q617 D608-D610, D615, D618-D622 D636 D631 D617 D607 D601-D606, D632-D635 PD5369A TC74HC00AP TC74HC107AP 2SA1048 2SC2458 DTA124ES DTC124ES HSS104-02 HSS104-02 MTZJ2. 2B MTZJ4. 3A SLR-342DCT31 SLR-342VCT31 LAU221J ASG1034 ASX7002 ACH7027 ACH7058 CEJA1R0M50 CEJA2R2M50 CEJA470M16 CKCYF103Z50 CKPUYF103Z25 CKPUYF103Z25 CKPUYF473Z16 ACS7014 RD1/4PU VSS1014 51063-1505 9604S-21F D15A15-125-2651 CAPACITORS C801, C802 (0. 01µF/AC250V) C815 (3. 3µF/25V) C813 C814 C811 ACG7020 ACH7027 CEAT471M25 CEBA470M10 CEYANP1R0M50 RD1/4PU ADX7207 AKP1034 AKP7005 KPE3 RKR1003 J RESISTORS All Resistors OTHERS Y802, Y803 BOARDIN READ WIRE CN802 AC SOCKET 1P CN801 AC INLET CN803 CONNECTOR (3P) H1, H2 FUSE HOLDER COILS L601-L608 F HEADPHONE ASSY C551, C552 CKCYB392K50 51063-0305 D15A03-150-2651 RKN1002 SWITCHES S603, S604, S606 S601 CAPACITORS OTHERS CABLE HOLDER (3P) J5 JUMPER WIRE JA501 HEADPHONE JACK CAPACITORS C601, C625, C635 (3. 3µF/25V) C605 (0. 22F) C624 C610, C637 C603 C604 C609, C613-C623, C626, C627 C632-C634 C628, C629, C631 G POWER SW ASSY SWITCH S901 ASG1035 ACG7017 RESISTORS VR601 (500K) Other Resistors J CAPACITOR C901 (0. 0033µF/AC250V) OTHERS CERAMIC RESONATOR (4. 19MHz) CABLE HOLDER (15P) CN601 21P FFC CONNECTOR J4 JUMPER WIRE X601 E Mark AC PRIMARY ASSY (1) CONTRAST TABLE AWX7051 and AWX7056 are constructed the same except for the following : Symbol and Description CN802 AC SOCKET 1P Part No. AWX7051 AWX7056 AKP1034 Not used Remarks (2) PARTS LIST FOR AWX7051 SEMICONDUCTORS IC811 Q811 D815 D811-D814 NJM78M56FA 2SK1132 HSS104-02 S5688G ATT7009 RSR1037 TRANSFORMER T801 RELAY RY801 21 A-400X 6. ADJUSTMENTS 6. 1 IDLE CURRENT ADJUSTMENT ¶ CAUTION : Heatsinks' (Q323­Q326) DC level is equal to +B or -B. Set the VOLUME CONTROL to minimum, BASS TONE CONTROL to center, TREBLE TONE CONTROL to center and BALANCE CONTROL to center. Adjust VR301 (VR302) so that the voltage between both sides of R415 (R416) becomes 16mV±1mV. Adjust VR301 (VR302) so that the voltage between both sides of R415 (R416) becomes 11mV±1mV. DC Voltmeter DC Voltmeter AF ASSY SIDE A R415 R413 W150 Heat Sink VR301 R417 W212 R416 R414 Heat Sink VR302 Heat Sink Heat Sink CN204 Fig. 6-1 Adjustment Method 22 A-400X 7. GENERAL INFORMATION 7. 1 IC INFORMATION PD5369A (FRONT R ASSY : IC601) · REMOTE CONTROL AMP MICROCOMPUTER · The information shown in the list is basic information and may not correspond exactly to that shown in the schematic diagrams. · Pin Assignment (Top view) P53 P17/SRDY P16/CLK P15/SOUT P14/SIN P13/T1 P12/T0 P11 P10 P27/IN7 P26/IN6 P25/IN5 P24/IN4 P23/IN3 P22/IN2 P21/IN1 P20/IN0 VREF XIN XOUT 1 SR 2 STB 3 CLK 4 DATA 5 CD-IND 6 TU-IND 7 PH-IND 8 LI-IND 9 T1-IND 10 SPA-IND 11 SPB-IND 12 LOU-IND 13 POW-IND 14 MUT-IND 15 DIR-IND 16 T2-IND 17 F-MUTE 18 VREF 19 XIN 20 XOUT 21 VSS T2 42 POWER 41 LOUD 40 M-CTRL 39 P-DET 38 P-CTRL 37 DIRECT 36 MUTE 35 WAKE UP 34 FUNC2 33 FUNC1 32 V-UP 31 V-DOWN 30 RSEL2 29 RSEL1 28 NC 27 BACK UP 26 RST 25 SPA 24 SPB 23 VCC 22 P52 P07 P06 P05 P04 P03 P02 P01 P00 P43 P42 P41 P40 P33/CNTR1 P32/CNTR0 P31/INT1 P30/INT0 RESET P51/XCOUT P50/XCIN VCC · Pin Function VSS No. 42 P52 I TAPE2 KEY input. 23 24 ON/OFF A-400X A C FUNCTION LOUDNESS Q505 Q501 Q503 DIRECT ON/OFF CN101 CN102 RIAA A DIRECT ENERGY MOS IC151 2. 8mV /50k PHONO 37dB TUNER C C VOLUME CD 7. 2 BLOCK DIAGRAM 200mV /50k LINE IC101(1/2) C Q509 Q303 A M VR501 TONE AND BALANCE C Q507 POWER AMP WRLC 40dB PROTECTION RY A 401 RY401 SP-A A RY402 SP-B RY403 H. P A TAPE1 /DAT SOURSE F JA501 200mV /1k REC A A IC251 UP/DOWN 200mV TAPE2 /50k MONITOR IC101(2/2) B D IC751 VR751 VR752 VR601 UNUSUAL OUTPUT FUNC DETECTION MUTE 200mV /1k REC CD, TAPE1/DAT : RY101, RY102 +BL TO FUNCTION SW TO POWER STAGE ­BL A A D451 FROM UNUSUAL OUTPUT DETECTION A DIRECT, LOUDNESS ON/OFF VOLUME UP/DOWN TO VOLTAGE STAGE MUTE, FUNC MUTE ON/OFF ­BH TO OP AMP RY IC451 IC452 +19. 2 ­15 +BH KEY INPUTS E E T1 FU1 RY801 G S901 FROM REC SEL µ-COM FROM FUNCTION SEL D IC601 A TO µ-COM LED TO PROTECTION RY +5. 6 D457-D460 T801 SR INPUT E IC811 E D811-D814 A-400X 8. Set to this position when not recording; the cassette deck will be disconnected, improving sound quality. - TREBLE tone control Use to adjust the high-frequency tone. When turned to the right, the high-frequency tone is emphasized; when turned to the left, the high-frequency tone is de-emphasized. NOTE: This control does not operate when the DIRECT button is in the on position. = BASS tone control Use to adjust the low-frequency tone. When turned 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 when the DIRECT button is in the on position. ~ PHONES jack When using headphones, insert the plug into this jack. 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). !SPEAKERS B (ON/OFF) button/indicator Use this button to listen to the speaker system connected to the SPEAKERS B terminals. Set to this position when listening with headphones. 8 BALANCE control Should normally be left in the center position. If the right side is louder, turn toward the L (left) position and if the left side is louder, turn toward the R (right) position. NOTE: This control does not operate when the DIRECT button is in the on position. @ SPEAKERS A (ON/OFF) button/indicator Use this button to listen to the speaker system connected to the SPEAKERS A terminals. Set to this position when listening with headphones. 9 DIRECT button/indicator Use this button when you do not wish to pass the output from input terminal equipment through the various frequency adjusting circuits (BASS, TREBLE, BALANCE, LOUDNESS). The signals input through the input terminals are reproduced without passing through the various frequency adjusting circuits. [. . . ] LINE : For playback with a component connected to the LINE terminal. ~ VOLUME +, ­ buttons + . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Increases the volume. ­ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Decreases the volume. NOTE: When the accessory remote control unit is used to operate other PIONEER components with the Î mark, it cannot be used to operate functions which do not correspond to the functions listed on the remote control unit. 28 A-400X 8. 4 SPECIFICATIONS Amplifier Section Continuous power output (both channels driven at 20 Hz to 20 kHz)** T. H. D. 65 W + 65 W* DIN Continuous power output (both channels driven at 1 kHz) T. H. D. [. . . ]