Sony HCD-GT22 / HCD-GT44 / HCD-GT55 / MHC-GT22 / MHC-GT22BP / MHC-GT44 / MHC-GT44BP / MHC-GT55 / MHC-GT55BP Service Manual ▷ View online
HCD-GT22/GT44/GT55
25
25
HCD-GT22/GT44/GT55
7-3. BLOCK DIAGRAM – AMP Section –
OUT
BUFFER
IC251
C
BASS AGC
E
SW OUT
D
POWER AMP
MUTING
Q251
OVER LOAD
DETECT
Q441
OVER LOAD
DETECT
Q501
R-CH
MUTING
Q272
BUFFER
Q121
LINE AMP
IC252
STANDBY SWITCH
Q489
DC DETECT
Q481, 482
IC441 (GT22/GT55)
IC441 (GT44)
+
+
TEMPERATURE
DETECT
Q483, 484
TEMPERATURE
DETECT
Q503, 507
R-CH
R-CH
R-CH
TH441
+
+
+
POWER AMP
IC501
MUTING
CONTROL SWITCH
Q261
O-SYS-MUTE
1
O-STK-MUTE
36
O-SWR
2
+
R-CH
PROTECTOR
Q485
RELAY DRIVE
Q486, 488 (GT22)
Q480, 486, 488 (GT44/GT55)
+
PROTECT
DETECT
Q487
FAN MOTOR
DRIVE
Q043 – 045
FAN MOTOR
DETECT
Q046
RY441
B
HP IN
F
PROTECT
–1
–2
R
L
+
–
–
+
–
–
+
RY501
D037
M
M001
(FAN)
(FAN)
SPEAKER
PHONES
JK441
+
–
–
SUB WOOFER OUT
JK501
RELAY DRIVE
Q502
SUB WOOFER
SWITCH
Q274
R-CH
AUDIO+9V
J803
SYSTEM CONTROLLER
IC901 (3/4)
: TUNER (FM/AM)
SIGNAL PATH
R-ch is omitted due to same as L-ch.
DC DETECT
Q505, 506
(GT44/GT55)
(Page 24)
(Page 24)
(Page 24)
(Page 26)
(Page 24)
HCD-GT22/GT44/GT55
26
26
HCD-GT22/GT44/GT55
7-4. BLOCK DIAGRAM – PANEL, POWER AMP Section –
REMOTE CONTROL
RECEIVER
IC601
FL701
FLUORESCENT
INDICATOR
TUBE
76 O-SWR-LED
I-KEY0 –I-KEY3
KEY0 – KEY4
KEY0 – KEY3
KEY0
KEY4
FLUORESCENT INDICATOR
TUBE DRIVER
IC701
SYSTEM CONTROLLER
IC901 (4/4)
F906
RECT
D902 – 905
PROTECT
DETECT
Q011
RECT
D001
D001
RECT
D910
D910
D006
O-S-LED1 –
O-S-LED6
S601 – 608 (KEY0),
S611 – 616 (KEY1),
S621 – 628 (KEY2),
S631 – 638 (KEY3),
S611 – 616 (KEY1),
S621 – 628 (KEY2),
S631 – 638 (KEY3),
S641 – 649 (KEY4)
S608 (GT44/GT55),
S641 – 649 (GT55)
5
O-POWER-RELAY
35
I-AC-CUT
RESET SIGNAL
GENERATOR
IC902
RESET SWITCH
Q903 – 905
D902
+3.3V
BD+3.3V
UNREG +16V
VBUS+5V
EVER +10V
LEVEL SHIFT
Q908
57
I-PROTECTOR
90
RESET
83 I-WAKEUPKEY
56 I-KEY4
66 I-VOL
2 – 13,
15, 16
DR35 [S0] –
DR16 [S19]
38 – 19
DR0 [T0] –
DR13 [T13]
70 – 75
61 – 64
LED DRIVE
Q601 – 606
GRID DRIVE
Q701 – 714
D601 – 606
(STREAM)
O-G-LED,
O-V-LED,
O-B-LED
O-V-LED,
O-B-LED
38 – 40
LED DRIVE
Q921 – 923
LED DRIVE
Q607
D612
SUBWOOFER
77 O-STBY-LED
81 I-SIRCS-IN
D611
STANDBY
ROTARY
ENCODER
MASTER
VOLUME
VOLUME
OPERATION
DIAL
S651
BASS
D609
VOCAL
D608
GUITAR
D607
65 I-JOG
ROTARY
ENCODER
S652
94 X2
95 X1
X902
20MHz
91 XT2
92 XT1
X901
32.768kHz
SI
O-NJM3427A-DATA
49
84
SCK
O-NJM3427A2-CLK
48
86
CSb
O-NJM3427FA2-CS
51
68
RSTb
O-NJM3427FA2-RESET
52
69
(AC IN)
RY901
POWER ON/OFF
RELAY DRIVE
Q903
VOLTAGE
SELECTOR
S901
D+1.5V
+1.5V
REGULATOR
IC201
USB+3.3V
D008
D009
D301, 302
D908
AUDIO+9V
M+9V
M+7V
F907
RECT
D011 – 014
RECT
D021 – 024
F904
F905
RECT
D402
D402
F908
F909
RECT
D401
D401
D007
F
PROTECT
+9V
REGULATOR
IC021
+9V
REGULATOR
IC011
+3.3V
REGULATOR
IC006
+5V
REGULATOR
IC007
+4V
REGULATOR
Q901, 902
RELAY B+
3
O-FRONT-SP-RELAY
52
I-USB-MONI
8
O-USB-POWER
4
O-CD-POWER
B+ SWITCH
Q041, 042
B+ SWITCH
Q301, 302
B+ SWITCH
Q303, 304
–27V
REGULATOR
Q902
AMP
SECTION
B+
AMP
SECTION
B+
FOR
FLUORESCENT
INDICATOR
TUBE
(GT22/GT55)
(GT44)
–VFL
VF
VF
PT902
SUB POWER
TRANSFORMER
PT901
MAIN POWER
TRANSFORMER
GT22: MX, AR, AUS/
GT44: MX, AR, AUS/
GT44: MX, AR, AUS/
GT55: MX, AR
GT22: E2, E3, E13, E51/
GT44: E2, E3, E13, E51/
GT44: E2, E3, E13, E51/
GT55: E2, E3, E51
GT22: MX, AR, AUS/
GT44: MX, AR, AUS/
GT44: MX, AR, AUS/
GT55: MX, AR
(GT44/GT55)
(GT55)
45
46
XT
XTb
OSC
VDD+3.3V
D+3.3V,
VREF+3.3V
+VH
–VH
+VL
–VL
F909
F904
RECT
D401
D401
+VCC
–VCC
• Abbreviation
AR : Argentina model
AUS : Australian model
E2 : 120V AC Area in E model
E3 : 240V AC Area in E model
E13 : 220V - 230V AC Area in E model
E51 : Chilean and Peruvian models
MX : Mexican model
AUS : Australian model
E2 : 120V AC Area in E model
E3 : 240V AC Area in E model
E13 : 220V - 230V AC Area in E model
E51 : Chilean and Peruvian models
MX : Mexican model
(Page 25)
Ver. 1.2
HCD-GT22/GT44/GT55
27
27
HCD-GT22/GT44/GT55
•
Note For Printed Wiring Boards and Schematic Diagrams
•
Indication of transistor
Note on Schematic Diagram:
•
All capacitors are in
µ
F unless otherwise noted. (p: pF)
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.
• A
: B+ Line.
• B
: B– Line.
•
Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
– CD Board –
no mark : CD PLAY
[
under no-signal (detuned) conditions.
– CD Board –
no mark : CD PLAY
[
] : USB
– USB Board –
no mark : USB
– TC Board –
no mark : TAPE PLAY
(
no mark : USB
– TC Board –
no mark : TAPE PLAY
(
) : TAPE REC
〈〈
〉〉
: TAPE A
{
} : TAPE B
– Other Board –
no mark : TUNER (FM/AM)
(
no mark : TUNER (FM/AM)
(
) : CD PLAY
[
] : TAPE PLAY
∗
: Impossible to measure
•
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.
Voltage variations may be noted due to normal produc-
tion tolerances.
•
Circled numbers refer to waveforms.
•
Signal path.
F
: TUNER (FM/AM)
J
: CD PLAY
: USB
: USB
E
: TAPE PLAY (DECK-A)
d
: TAPE PLAY (DECK-B)
G
: TAPE REC
f
: AUDIO IN
N
: MIC
•
Abbreviation
AR
AR
: Argentina model
AUS
: Australian model
E2
: 120V AC Area in E model
E3
: 240V AC Area in E model
E13
: 220V – 230V AC Area in E model
E51
: Chilean and Peruvian models
MX
: Mexican model
Note on Printed Wiring Board:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
• W
: indicates side identified with part number.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
•
Circuit Boards Location
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
CD board
SW board
MOTOR (LD) board
SENSOR board
DRIVER board
MOTOR (TB) board
TUNER (FM/AM)
KEY LEFT board
KEY TOP board
(GT55)
(GT55)
PANEL board
VOLUME board
KEY RIGHT board
USB board
MIC board
MAIN board
5V REG board
SUB WOOFER board (GT44/GT55)
AMP board
TC board
SW-SP board
(GT44/GT55)
(GT44/GT55)
TRANS board
D-LIGHT SYNC board (except Australian model)
HCD-GT22/GT44/GT55
28
28
HCD-GT22/GT44/GT55
7-5. PRINTED WIRING BOARD – CD Board –
: Uses unleaded solder.
•
See page 27 for Circuit Boards Location.
R402
C404
C403
R405
R408
IC401
R108
R109
C136
C135
R128
R130
R134
R135
R136
R129
R139
R143
R142
R140
C124
C125
C122
C123
R151
C138
C137
C140
C139
C142
C141
C143
R144
C100
C107
R414
C144
C146
C145
C147
C148
C149
C150
R148
R146
C105
C104
R145
R147
R149
R150
C118
C117
CN301
C303
C302
C301
R102
C127
C126
R101
C103
C113
C102
C101
C119
C120
R105
R106
C132
R104
R154
C116
R153
C109
C110
R110
IC101
R210
R209
R218
R208
R219
R207
R220
R206
R221
R205
R222
R204
R223
R203
R157
R156
R202
CN202
C152
C151
R224
M401
S201
M402
C405
C401
R415
R114
C153
R118
R212
R213
C106
C306
R303
R304
R302
R301
C307
Q301
C309
C128
C130
R155
C115
R111
R112
C133
R119
C112
C108
R214
R216
R121
R121
C201
C202
C204
C205
R201
C206
IC201
C207
R211
X102
X102
CD BOARD
(CONDUCTOR SIDE)
1-872-620-
11
(11)
(LIMIT)
M
(SPINDLE)
M
(SLED)
A
MAIN BOARD
CN302
TP124(VC)
TP121
(RFI)
OPTICAL PICK-UP
BLOCK
(KSM-213DCP)
1
3
5
4
CD BOARD
(COMPONENT SIDE)
1-872-620-
11
(11)
E
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
10
(Page 37)
Click on the first or last page to see other HCD-GT22 / HCD-GT44 / HCD-GT55 / MHC-GT22 / MHC-GT22BP / MHC-GT44 / MHC-GT44BP / MHC-GT55 / MHC-GT55BP service manuals if exist.