MHC-VX888, TA-DX80 - Sony Audio Service Manual (repair manual)

mhc-vx888, ta-dx80 service manual
Model
MHC-VX888 TA-DX80
Pages
14
Size
1.42 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
mhc-vx888-ta-dx80.pdf
Date

Read Sony MHC-VX888 / TA-DX80 Service Manual online

SERVICE MANUAL
INTEGRATED STEREO AMPLIFIER
E Model
SPECIFICATIONS
TA-DX80
Ver 1.0  2001.03
9-929-592-11
Sony Corporation
2001C0500-1
Audio Entertainment Group
C
 2001.3
General Engineering Dept.
TA-DX80 is the amplifier section in
MHC-DX80, MHC-VX888.
The following measured at AC 120, 220, 240 V 50/60 Hz
DIN power output (rated) 75 + 75 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
100 + 100 watts
(6 ohms at 1 kHz, 10% THD)
Inputs
MD/VIDEO (AUDIO) IN: voltage 450 mV/250 mV,
(phono jacks)
impedance 47 kilohms
MIC:
sensitivity 1 mV,
(phone jack)
impedance 10 kilohms
Outputs
PHONES:
accepts headphones of
(stereo mini jack)
8 ohms or more
FRONT SPEAKER:
accepts impedance of 6 to 16 ohms
SURROUND SPEAKER: accepts impedance of 6 ohms
General
Power requirements
Mexican models:
120 V AC, 60Hz
E91 models:
220 V AC, 50/60 Hz
Other models:
120 V, 220 V or 230 – 240 V AC, 50/60Hz
Adjustable with voltage selector
Power consumption
180 watts
Dimensions (w/h/d)
Approx. 150 
×
 360 
×
 343 mm
Mass:
Approx. 5.5 kg
Design and specifications are subject to change without notice.
• Abbreviation
E91: 220 V AC area in E model
2
TA-DX80
TABLE  OF  CONTENTS
1.
SERVICING  NOTE
..................................................
2
2.
GENERAL
...................................................................
3
3.
DISASSEMBLY
3-1. Disassembly Flow ...........................................................
4
3-2. Case .................................................................................
4
3-3. Front Panel Section .........................................................
5
3-4. MAIN Board ...................................................................
5
4.
DIAGRAMS
4-1. Note for Printed Wiring Boards and
Schematic Diagrams .......................................................
5
4-2. Printed Wiring Board  – MAIN Board – ........................
6
4-3. Schematic Diagram  – MAIN Board – ...........................
7
4-4. Printed Wiring Boards
– INLET/PANEL/TRANS Boards – ..............................
8
4-5. Schematic Diagram
– INLET/PANEL/TRANS Boards – ..............................
9
4.
EXPLODED  VIEW
................................................... 10
5.
ELECTRICAL  PARTS  LIST
............................... 10
SAFETY-RELATED  COMPONENT  WARNING!!
COMPONENTS  IDENTIFIED  BY  MARK  
0
  OR  DOTTED
LINE  WITH  MARK  
0
  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.
MODEL  IDENTIFICATION
– REAR VIEW –
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
MODEL NO.
 TA-DX80
INTEGRATED STEREO AMPLIFIER
Mexican model : AC: 120 V - 60 Hz 180 W
E91 model
: AC: 220 V - 50/60 Hz 180 W
Other models : AC: 120/220/230 – 240 V - 50/60 Hz 180W
• Abbreviation
E91: 220 V AC area in E model
SECTION  1
SERVICING  NOTE
3
TA-DX80
SECTION  2
GENERAL
This section is extracted from
instruction manual.
• LOCATION  OF  CONTROLS
– Front view –
1 Indicator
2 LINK/SURROUND/SUB WOOFER indicator
3 SURROUND SPEAKER MODE switch
4 SURROUND SPEAKER LEVEL control
1 SYSTEM CONTROL connector
2 SPEAKER terminal
3 VOLTAGE SELECTOR switch
(EXCEPT Mexican and E91 models)
4 - AC IN terminal
• Abbreviation
E91: 220 V AC area in E model
– Rear view –
1
2
3
4
4
TA-DX80
• This set can be disassembled in the order shown below.
3-1.
DISASSEMBLY  FLOW
SECTION  3
DISASSEMBLY
Note:
 Follow the disassembly procedure in the numerical order given.
3-2.
CASE
3-3. FRONT PANEL 
SECTION
(Page 5)
3-2. CASE
(Page 4)
3-4. MAIN BOARD
(Page 5)
1
screw (case3 TP2)
(8 mm)
1
screw (case3 TP2)
(10 mm)
1
screw (case3 TP2)
(10 mm)
1
screw (case3 TP2)
(8 mm)
2
three screws
(BVTP3 
×
 8)
2
four screws
(BVTP3 
×
 8)
3
case
Page of 14
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Download Sony MHC-VX888 / TA-DX80 Service Manual (Repair Manual)

Here you can read online and download Sony MHC-VX888 / TA-DX80 Service Manual in PDF. MHC-VX888 / TA-DX80 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony MHC-VX888 / TA-DX80 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.