Sony CMT-SP55MD / CMT-SP55TC / TA-SP55 Service Manual ▷ View online
5
SECTION 3
DISASSEMBLY
3-1. CASE
3-2. FRONT PANEL ASSY
Set
Case
Front Panel Assy
HP Board, Panel Board
1
two screws
(case 3 TP2)
4
case
1
two screws
(case 3 TP2)
2
2
3
1
flat type wire (17 core)
(CN303)
4
screw (BVTP 3x12)
5
front panel assy
2
two screws
(BVTP 3x12)
3
two foot assy's
claws
claws
6
3-3. HP BOARD, PANEL BOARD
0
three screws
(BVTP 2.6x8)
qa
panel board
0
screw
(BVTP 2.6x8)
1
panel (L), side
5
HP board
6
two knobs (DSG)
8
nut
7
knobs (VOL)
9
knobs (select)
3
panel (TA), front
4
1
panel (R), side
2
claw
2
claw
7
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
2
: nonflammable resistor.
•
5
: fusible resistor.
•
C
: panel designation.
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
a
: Through hole.
• b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
•
U
: B+ Line.
•
V
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Signal path.
K
: FM
• Abbreviation
AED: North European model
MY: Malasia model
SP: Singapore model
HK: Hong Kong model
KR: Korea model
MY: Malasia model
SP: Singapore model
HK: Hong Kong model
KR: Korea model
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
• Indication of transistor
B
These are omitted.
C
E
B
These are omitted.
C
E
Note:
The components identified by mark
The components identified by mark
0
or
dotted line with mark
0
are critical for
safety.
Replace only with part number specified.
Replace only with part number specified.
SECTION 4
DIAGRAMS
TA-SP55
9
9
4-1. BLOCK DIAGRAM
1
3
2
1
2
4
3
5
7
1
3
2
1
7
6
3
DSG
DSG
STANDBY
VOLUME
FUNCTION SELECT
LED
DRIVE
LED
DRIVE
Q912,913
Q911,914
Q311,312
D911
D912
S921
MUTE
MUTE
Q552,553
Q802-804
Q801
RY801
CN551
FAN DRIVE
CN101
FAN
DC
DETECT
RELAY
DRIVE
RY101
+7V
REG.
-7V
REG.
+UNREG(H)
(+13V)
+UNREG(L)
-UNREG(L)
+7V
+5.6V
-7V
VCC
Q201
IC211
Q202
D201-204
D209-210
D251
D211-214
T102
D551
TR101
HK, MY, SP
model
model
(POWER AMP)
+5.6V
REG.
RELAY
DRIVE.
DRIVE.
JW102
AEP, AED, UK, KR
model
model
JW104
IC502
JW101
AEP, AED, UK, KR model
Q211
AC
IN
IN
L
L
SPEAKER
PHONE
TM801
R-CH
R-CH
R-CH
R-CH
IC801
POWER AMP
Q512
Q314
MUTE-A
IC552(2/2)
IC552(1/2)
Q301,302
BUFFER
Q516
IC501
SHK PROCESSOR
TREB
BASS
+
-
L-SHK
TREBLE
RV503
RV502
BASS
L
R
-UNREG(L)
+UNREG(L)
+5.6V(UNSW)
+13V(REG)
XPRE-MUTE
HP-MUTE
XS-RELAY
P-RELAY
DSG-OFF
TA-KEY/HPSW
ON/STBY/
AMP-MUTE
ENC0
ENC1
ENC0
ENC1
R-CH
L-ORG
-UNREG(L)
+UNREG(L)
+5.6V
+UNREG(H)
DSG OFF
TAKEY
HPSW
8
6
1
3
4
5
5
2
1
3
4
4
11
10
12
9
CN301(1/2)
CN302
S901
S902
S931
J667
09
F102
S101
S101
VOLTAGE
SELECT
220V-240V 110V-120V
SYSTEM
CONTROL 1
TO
ST-SP55
ST-SP55
"/1
: FM
•
Signal Path
•
R-ch is omitted due to same as L-ch.
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