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SERVICE MANUAL
TA-EX660/EX770 is the amplifier section in MHC-EX660 and DHC-EX770MD.
The mechanical and electorical specifications of TA-EX660/EX770 is almost same as
TA-EX66/EX77 AEP/UK model.
So this manual contains only the points which differ from TA-EX66/EX77.
For the informations not contained in this manual, please refer to the TA-EX66/EX77
service manuals (9-960-931- ) previously issued.
•PARTS LIST (The difference between TA-EX66/EX77 and TA-EX660/770)
Page
Ref. No.
Part No.
4-985-925-01
1
2
X-4947-837-1
22
4
X-4948-359-1
4
X-4948-436-1
* 58
4-985-927-11
23
* 58
4-985-927-41
• Items marked "*" are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
MICROFILM
9-922-858-11
TA-EX660/EX770
TA-EX66/EX77
Description
KNOB(JOG)
KNOB(VOL)ASSY
PANEL ASSY, FRONT(EX66)
PANEL ASSY, FRONT(EX77:AEP, UK)
PANEL, BACK(EX77:AEP,UK)
PANEL, BACK(EX66:AEP,UK)
Sony Corporation
Home A&V Products Company
TA-EX660/EX770
Ref. No.
Part No.
Description
–––––––
–––––––
–––––––––
4-985-925-11 KNOB(JOG)
1
2
X-4949-863-1 KNOB(VOL)ASSY
4
X-4949-867-1 PANEL ASSY, FRONT(EX660)
4
X-4949-862-1 PANEL ASSY, FRONT(EX770)
* 58
4-985-927-61 PANEL, BACK(EX770)
* 58
4-985-927-71 PANEL, BACK(EX660)
INTEGRATED STEREO AMPLIFIER
AEP Model
UK Model
98D001648-1D
Printed in Japan ©1998.4
Published by Quality Assurance Dept.
(Shibaura)
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Summary of Contents for Sony TA-EX660
- Page 1 AEP Model UK Model TA-EX660/EX770 is the amplifier section in MHC-EX660 and DHC-EX770MD. The mechanical and electorical specifications of TA-EX660/EX770 is almost same as TA-EX66/EX77 AEP/UK model. So this manual contains only the points which differ from TA-EX66/EX77. For the informations not contained in this manual, please refer to the TA-EX66/EX77 service manuals (9-960-931- ) previously issued.
- Page 2 TA-EX66/EX77 SERVICE MANUAL AEP Model UK Model E Model TA-EX66/EX77 is the amplifier section Photo: TA-EX77 (AEP, UK model) in MHC-EX66, DHC-EX77MD/MD77. SPECIFICATIONS General AEP, UK model: DIN power output 45 + 45 watts (6 ohms at 1 kHz, DIN) Power requirements Continuous RMS power output AEP, UK model:...
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Page 3: Table Of Contents
LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY. -
Page 4: General
SECTION 1 This section is extracted from instruction manual. GENERAL – 3 –... - Page 5 – 4 –...
- Page 6 – 5 –...
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Page 7: Disassembly
SECTION 2 DISASSEMBLY • This set can be disassembled in the order shown below. CASE, FRONT PANEL ASS’Y BACK PANEL (Page 7) (Page 6) MAIN BOARD CONNECTOR BOARD (Page 8) (Page 7) Note: Follow the disassembly procedure in the numerical order given. CASE, FRONT PANEL ASS’Y 3 case 1 screw (BVTT3 ×... - Page 8 3 three screws BACK PANEL (BVTP3 × 10) EX77 2 connector 4 claw (CN504) 1 connector (CN911) 3 screw (BVTP3 × 8) 3 five screws (BVTP3 × 10) 5 Remove the back panel to direction of the arrow A . 3 Remove the connector (CN554) to direction of the arrow B .
- Page 9 MAIN BOARD 2 four screws 3 Remove the MAIN board to (BVTT3 × 6) direction of the arrow. 1 two screws (BVTP3 × 16) – 8 –...
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Page 10: Diagrams
SECTION 3 DIAGRAMS 3-1. IC PIN FUNCTION DESCRIPTION • PANEL BOARD IC101 MB89193A-157 (SYSTEM CONTROLLER) Pin No. Pin Name I / O Function Plug in detection signal input of the MIX MIC jack (J201) MIC-IN Insert the microphone plug with the jack when “H” STANBY Power on/off control signal output terminal “H”: power on, “L”: standby mode... - Page 11 • IC Block Diagrams IC104 BA6208 MOTOR SWITCH DRIVE MOTOR SWITCH DRIVE IC105 SN74HC138AN DATA OUTPUTS OUTPUT SELECT ENABLE IC203, 503 MC14052BCP SELECT A INH 7 SELECT B – 10 –...
- Page 12 IC701 µPC1237HA OVER LOAD DET MUTE OFFSET DET LATCH/ AUTORESET AC OFF • Waveforms 2 IC101 8 (XOUT) 1 IC101 7 (XIN) 5.7 Vp-p 5.5 Vp-p 4 MHz 4 MHz – 11 –...
- Page 13 • Circuit Boards Location PRIMARY board CONNECTOR board SECONDARY board SW board (EX77) PANEL board MAIN board VOL board – 12 –...
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Page 17: Exploded Views
X-4948-359-1 PANEL ASSY, FRONT (EX66) 4-951-620-01 SCREW (2.6X8), +BVTP X-4948-436-1 PANEL ASSY, FRONT (EX77: AEP, UK) 4-977-699-11 LEG (F) 4-985-922-01 RING, ORNAMENTAL * 13 1-665-663-11 VOL BOARD 4-962-708-01 EMBLEM (4-A), SONY 3-363-099-01 SCREW (CASE 3 TP2) 4-985-918-01 INDICATOR (POWER) 4-978-245-11 CASE – 22 –... - Page 18 (2) MAIN SECTION not supplied T901 AEP, HK, SP AEP, SP UK, HK supplied not supplied EX77 The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. Ref. No. Part No.
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Page 19: Electrical Parts List
SECTION 5 CONNECTOR MAIN ELECTRICAL PARTS LIST Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark NOTE: The components identified by mark • Due to standardization, replacements in the • Items marked “*” are not stocked since they ! or dotted line with mark ! are parts list may be different from the parts speci- are seldom required for routine service. - Page 20 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C551 1-162-286-31 CERAMIC 220PF CN501 1-770-966-11 PIN, CONNECTOR (PCB) (V TYPE) 6P (AEP, UK) CN502 1-569-490-11 SOCKET, CONNECTOR 3P C552 1-162-286-31 CERAMIC 220PF CN801 1-764-289-11 PIN, CONNECTOR (PC BOARD) 22P (AEP, UK) C553 1-162-286-31 CERAMIC...
- Page 21 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R532 1-249-429-11 CARBON 1/4W R306 1-260-103-11 CARBON 2.2K 1/2W R533 1-249-429-11 CARBON 1/4W ! R309 1-212-881-11 FUSIBLE 1/4W F R534 1-247-807-31 CARBON 1/4W ! R310 1-217-151-00 RES, METAL PLATE 0.22 R535 1-247-807-31 CARBON...
- Page 22 MAIN PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < SPEAKER TERMINAL > C263 1-126-163-11 ELECT 4.7uF C264 1-162-294-31 CERAMIC 0.001uF TB401 1-537-240-11 TERMINAL BOARD (CHECKER PIN) (SPEAKER) (AEP, UK) C265 1-162-282-31 CERAMIC 100PF ************************************************************ (AEP, UK) A-4398-059-A PANEL BOARD, COMPLETE (AEP, UK) C291...
- Page 23 PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Q109 8-729-422-73 TRANSISTOR UN4212 R213 1-247-903-00 CARBON 1/4W Q110 8-729-422-73 TRANSISTOR UN4212 R214 1-247-903-00 CARBON 1/4W Q111 8-729-900-63 TRANSISTOR DTA124ES R215 1-247-843-11 CARBON 3.3K 1/4W Q112 8-729-422-73 TRANSISTOR UN4212 Q113 8-729-422-73 TRANSISTOR UN4212 R216...
- Page 24 PANEL PRIMARY SECONDARY Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark RV202 1-223-973-11 RES, VAR, CARBON 10K/10K (BASS) < SWITCH > RV221 1-223-974-11 RES, VAR, CARBON 50K (MIC LEVEL) S901 1-762-884-11 SWITCH, SLIDE < SWITCH > (MODE SELECTOR DIGITAL REC/ANALOG REC) ************************************************************ S101...
- Page 25 TA-EX66/EX77 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Sony Corporation 97D0573-1 Home A&V Products Company Printed in Japan © 1997. 4 9-960-931-11 Published by General Engineering Dept. (Shibaura) – 30 –...