DOWNLOAD Sony TC-WE675 Service Manual ↓ Size: 5.18 MB | Pages: 47 in PDF or view online for FREE

Model
TC-WE675
Pages
47
Size
5.18 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
tc-we675.pdf
Date

Sony TC-WE675 Service Manual ▷ View online

2
TC-WE675
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.  RE-
PLACE  THESE  COMPONENTS  WITH  SONY  PARTS  WHOSE
PART  NUMBERS  APPEAR  AS  SHOWN  IN  THIS  MANUAL  OR
IN  SUPPLEMENTS  PUBLISHED  BY  SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
 À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 
0
 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE  DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
SAFETY  CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.
LEAKAGE
The AC leakage from any exposed metal part to earth Ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers). Leak-
age current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a VOM
or battery-operated AC voltmeter. The “limit” indication is 0.75
V, so analog meters must have an accurate low-voltage scale.
The Simpson 250 and Sanwa SH-63Trd are examples of a pas-
sive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable. (See Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
0.15
µ
F
To Exposed Metal
Parts on Set
1.5k
AC
voltmeter
(0.75V)
Earth Ground
General
Power requirements
U.S.A.and Canadian models:
120 V AC, 60Hz
European models:
230 V AC, 50/60Hz
Australian models:
240 V AC, 50/60Hz
Other models:
120/220/230-240 V AC, 50/60Hz
Adjustable with voltage selector
Power consumption
22 watts
Dimensions (w/h/d)
Approx. 430 
×
 120 
×
 300 mm
Mass
4.2 kg
Supplied accessories
Audio connecting cords (2)
Control A1II cable (1)*
*Supplied for Canadian models only
Design and specifications are subject to change
without notice.
3
TC-WE675
PARTS No.
MODEL
4-232-414-0s
US model
4-232-414-1s
CND model
4-232-414-2s
AEP model
4-232-414-3s
UK model
4-232-414-4s
SP model
4-232-414-5s
AUS model
MODEL IDENTIFICATION
–Back panel–
Part No.
• Abbreviation
CND : Canadian model
SP
: Singapore model
AUS : Australian model
TABLE OF CONTENTS
1. GENERAL
.......................................................................... 4
2. DISASSEMBLY
2-1. Case ...................................................................................... 5
2-2. Front Panel Assy ................................................................... 5
2-3. Cassette Lid Assy (Deck A/B) .............................................. 6
2-4. Mechanism Deck Assy (Deck A/B) ...................................... 6
3. SERVICE MODE
.............................................................. 7
4. MECHANICAL ADJUSTMENTS
................................. 8
5. ELECTRICAL ADJUSTMENTS
................................. 8
6. DIAGRAMS
6-1. Circuit Boards Location ...................................................... 12
6-2. Printed Wiring Board – MAIN Section – ........................... 14
6-3. Schematic Diagram – MAIN (1/4) Section – ..................... 15
6-4. Schematic Diagram – MAIN (2/4) Section – ..................... 16
6-5. Schematic Diagram – MAIN (3/4) Section – ..................... 17
6-6. Schematic Diagram – MAIN (4/4) Section – ..................... 18
6-7. Printed Wiring Board – DECK Section – ........................... 19
6-8. Schematic Diagram – DECK Section – .............................. 19
6-9. Schematic Diagram – LEAF SW Section – ........................ 20
6-10. Printed Wiring Board – LEAF SW Section – ................... 21
6-11. Schematic Diagram – PANEL Section – ........................... 22
6-12. Printed Wiring Board – PANEL Section – ........................ 23
6-13. Schematic Diagram – POWER Section – ......................... 24
6-14. Printed Wiring Board – POWER Section – ...................... 25
6-15. IC PIN FUNCTION .......................................................... 26
7. EXPLODED VIEWS
7-1. Case Section ........................................................................ 27
7-2. Chassis Section ................................................................... 28
7-3. Cassette Holder Section ...................................................... 29
7-4. Front Panel Section ............................................................. 30
7-5. Tape Mechanism Section .................................................... 31
8. ELECTRICAL PARTS LIST
........................................ 32
4
TC-WE675
SECTION 1
GENERAL
Front Panel
Location of Parts and Controls
1
POWER button
2
RESET (Deck A) button
3
MEMORY (Deck A) button
4
RESET (Deck B) button
5
MEMORY (Deck B) button
6
AUTO REC LEVEL indicator
7
REC LEVEL knob
8
FADER button
9
ARL button
0
SYNCHRO button
qa
PHONES jack
qs
HIGH/NOMAL button
qd
A+B REC button
qf
DECK B button
qg
DECK A button
qh
(AMS) M (Deck B) button
qj
m (AMS) (Deck B) button
qk
H (Deck B) button
ql
h (Deck B) button
w;
REC z (Deck B) button
wa
A (Eject) (Deck B) button
ws
REC MUTING W (Deck B) button
wd
PAUSE X (Deck B) button
wf
x (Deck B) button
wg
DOLBY NR B/C switch
wh
DOLBY NR OFF/ON FILTER
wj
H/FRONT (Deck A) button
wk
h/BACK (Deck A) button
wl
REC z (Deck A) button
e;
REC MUTING W (Deck A) button
ea
A (Eject) (Deck A) button
es
PAUSE X (Deck A) button
ed
x/CLEAR (Deck A) button
ef
(AMS) M (Deck A) button RMS +
eg
m (AMS) (Deck A) button RMS –
eh
DISPLAY button
ej
CHECK button
ek
SET button
el
RMS/START button
r;
PITCH CONTROL knob
ra
PITCH CONTROL button
rs
DIRECTION switch
• AMS is the abbreviation for Automatic Music Sensor.
1
2 3
4 5
6 7
ra
rs
r;
wd
wl
e;
ws w; ql qk qj
qf
qg
qd qs
qh
eg ef
wf
wj
wk
wa
ea
ed
9
0
qa
8
wg
es
wh
ek
el
ej eh
5
TC-WE675
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. CASE
2-2. FRONT PANEL ASSY
1
 screw
     (BVTT 3x6)
2
 two screws
     (case 3 TP2)
3
 two screws
     (case 3 TP2)
4
 case
qs
 screw
     (BVTP 3x8)
qf
 screw
     (BVTP 3x8)
qd
 screw
     (BVTP 3x8)
qg
 two screws
     (BVTT 3x6)
qj
 claw
qh
 claw
qk
 front panel assy
8
 CN301
7
 CN401
2
 CN807
1
 CN5802
3
 CN803
4
 CNA806
5
 flat type wire
     (Deck A)
9
 CN002
6
 flat type wire
     (Deck B)
0
 screw
     (BVTP 3x8)
qa
wire
Set
Case
Front Panel Assy
Cassette Lid Assy (Deck A/B)
Mechanism Deck Assy (Deck A/B)
• The equipment can be removed using the following procedure.
Page of 47
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Sony TC-WE675 Service Manual ▷ Download

  • DOWNLOAD Sony TC-WE675 Service Manual ↓ Size: 5.18 MB | Pages: 47 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony TC-WE675 in PDF for free, which will help you to disassemble, recover, fix and repair Sony TC-WE675 Audio. Information contained in Sony TC-WE675 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.