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Sony TA-EX66 Service Manual

Sony TA-EX66 Service Manual

Integrated stereo amplifier
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SERVICE MANUAL
TA-EX66/EX77 is the amplifier section
in MHC-EX66, DHC-EX77MD/MD77.
AEP, UK model:
DIN power output
45 + 45 watts (6 ohms at 1 kHz, DIN)
Continuous RMS power output
60 + 60 watts (6 ohms at 1kHz, 10% THD)
Music power output
105 + 105 watts
HK, SP model:
Continuous RMS power output
55 + 55 watts (6 ohms at 1 kHz, 5% THD)
Inputs
CD IN, MD IN (phono jacks): voltage 450 mV, impedance 47 kilohms
TUNER IN, TAPE IN, VIDEO1 IN, VIDEO2/AUX IN (TA-EX66/
EX77: AEP, UK model), VIDEO2 IN (TA-EX77: HK, SP model) (phono
jacks):
voltage 250 mV, impedance 47 kilohms
MIX MIC (phone jack):
sensitivity 1 mV, impedance 10 kilohms or more
Outputs
MD OUT, TAPE OUT, VIDEO1 OUT (phono jacks):
voltage 250 mV, impedance 1 kilohm
PHONES (stereo phone jack):
accepts headphones of 6 ohms or more.
SPEAKER:
accepts impedance of 6 to 16 ohms.
Dimensions (w/h/d) incl. projecting parts and controls:
Approx. 280 × 122.5 × 298 mm
Mass
Approx. 5.3 kg
MICROFILM
All manuals and user guides at all-guides.com
TA-EX66/EX77
Photo: TA-EX77 (AEP, UK model)
SPECIFICATIONS
General
Power requirements
AEP, UK model:
220 – 230 V AC, 50/60 Hz
HK, SP model:
220 – 240 V AC, 50/60 Hz
Power consumption
125 watts
Design and specifications are subject to change without notice.
• Abbreviation
HK : Hong Kong
SP : Singapore
INTEGRATED STEREO AMPLIFIER
AEP Model
UK Model
E Model

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Summary of Contents for Sony TA-EX66

  • Page 1 HK : Hong Kong CD IN, MD IN (phono jacks): voltage 450 mV, impedance 47 kilohms SP : Singapore TUNER IN, TAPE IN, VIDEO1 IN, VIDEO2/AUX IN (TA-EX66/ EX77: AEP, UK model), VIDEO2 IN (TA-EX77: HK, SP model) (phono jacks):...
  • Page 2: Table Of Contents

    ......... 24 TA-EX77 (Hong Kong model) : 3π HK TA-EX66 (AEP, UK model) : 4π CED/CEK TA-EX66 (Singapore model) : 5π SP SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
  • Page 3: General

    All manuals and user guides at all-guides.com SECTION 1 This section is extracted from instruction manual. GENERAL – 3 –...
  • Page 4 All manuals and user guides at all-guides.com – 4 –...
  • Page 5 All manuals and user guides at all-guides.com – 5 –...
  • Page 6: Disassembly

    All manuals and user guides at all-guides.com 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 7 All manuals and user guides at all-guides.com 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 .
  • Page 8 All manuals and user guides at all-guides.com MAIN BOARD 2 four screws 3 Remove the MAIN board to (BVTT3 × 6) direction of the arrow. 1 two screws (BVTP3 × 16) – 8 –...
  • Page 9: Diagrams

    All manuals and user guides at all-guides.com 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”...
  • Page 10 All manuals and user guides at all-guides.com • 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 11 All manuals and user guides at all-guides.com 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 12 All manuals and user guides at all-guides.com • Circuit Boards Location PRIMARY board CONNECTOR board SECONDARY board SW board (EX77) PANEL board MAIN board VOL board – 12 –...
  • Page 13 All manuals and user guides at all-guides.com...
  • Page 14 All manuals and user guides at all-guides.com...
  • Page 15 All manuals and user guides at all-guides.com...
  • Page 16: 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 17 All manuals and user guides at all-guides.com (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.
  • Page 18: Electrical Parts List

    All manuals and user guides at all-guides.com 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 19 All manuals and user guides at all-guides.com 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...
  • Page 20 All manuals and user guides at all-guides.com 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...
  • Page 21 All manuals and user guides at all-guides.com 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...
  • Page 22 All manuals and user guides at all-guides.com 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 Q112 8-729-422-73 TRANSISTOR UN4212 R215...
  • Page 23 All manuals and user guides at all-guides.com 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 <...
  • Page 24 TA-EX66/EX77 All manuals and user guides at all-guides.com Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Sony Corporation 97D0573-1 Printed in Japan © 1997. 4 Home A&V Products Company 9-960-931-11 Published by General Engineering Dept. (Shibaura)

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Ta-ex77