![background image](http://html.mh-extra.com/html/sony/hcd-gtr33/hcd-gtr33_service-manual_420750027.webp)
HCD-GTR33/GTR55/GTR77
HCD-GTR33/GTR55/GTR77
27
27
6-12. SCHEMATIC DIAGRAM - MAIN Board (3/3) -
• See page 40 for IC Block Diagrams.
1.0
0.3
0.3
IC677
IC603
IC602
KIA7812API-U/PF
IC600
SI-8001FFEK
IC678
Q696
2SD1859TV2Q
C612
0.1
C604
0.1
C605
0.1
D10XB60 F
D601
25V
3300
C602
14
15
11
9
5
JL233
1k
R513
MA2J1110GLS0
D501
RY500
JL230
JL224
JL226
JL227
JL223
JL232
JL225
JL231
JL228
JL229
*R637
*R638
*R635
22k
R634
10
0
R636
22k
R633
C611
10V
100
0.1
C610
0.1
C608
MA2J1110GLS0
D628
R130
220k
R131
220k
1
2
3
4
5
6
7
8
9
9P
CN601
AVDD5V
AGND
DVDD5V
DGND
DVDD3.3V
MGND
VM (9V)
USBGND
USB+5V
JL278
JL277
JL276
JL275
JL274
JL273
JL280
JL272
JL279
JW604
JW602
16V
100
C609
RB055L-40TE25
D620
RB055L-40TE25
D621
10EDB40-TB3
D623
10EDB40-TB3
D624
10EDB40-TB3
D612
10EDB40-TB3
D611
10EDB40-TB3
D610
10EDB40-TB3
D613
KIA7809API-U/PF
+9V REGULATOR
IC602
UPC3533AHF
+3.3V REGULATOR
IC603
50V
C500
10
R502
1k
1
12
3
4
5
6
7
8
9
10
11
NO468
12P
AC CUT DETECT
AC4
EVER10V
STBY RELAY
DGND
-VFL
VF
VF
AC3
AC3
AC4
16V
10
C699
JL511
JL512
JL522
R118
27k
R120
27k
R504
1k
1k
R623
2SC3052EF-T1-LEF
Q620
2SC3052EF-T1-LEF
Q502
2SC3052EF-T1-LEF
AC CUT DETECT
Q501
2SC3052EF-T1-LEF
RELAY DRIVE
Q500
MC2838-T112-1
D699
R698
4.7k
R699
4.7k
0.1
C623
+
-
JK500
2SC3052EF-T1-LEF
FAN MOTOR DRIVE
Q697
R690
2.7k
+12V REGULATOR
KTA1271Y-AT
Q699
R694
2.7k
R674
10k
0.1
C692
R697
1k
G
RED
WHT
J120
6
SI-8008TM-TLS
+5V REGULATOR
IC677
330
R603
470
R619
2.2k
R601
2.2k
R602
47uH
L623
22
R659
C654
2200p
16V
100
C695
JW624
35V
470
C625
C617
0.1
C618
0.1
+
-
+
-
JK501
1
2
3
4
50V
C696
2.2
47uH
L624
+9V REGULATOR
8.2k
R620
470
R621
330
R622
150
R640
150
R627
C120
0.47
JW621
GTR77
GTR33/55
G33/55/77
JL270
2SC3906K-T146E
Q503
R500
1k
JR503
0
330
R666
10V
470
C620
25V
470
C621
16V
330
C624
MA2J1110GLS0
D691
+5V REGULATOR
22k
R695
16V
3300
C616
JL529
JL530
JL531
JL532
JL533
JL534
JL535
JL536
JL538
JL539
JL540
JL541
JL542
JL543
470p
C125
470p
C112
100p
C110
100p
C111
22p
C115
22p
C116
52
24
1
45
53
51
PROTECT
54
8
38
3
2
4
AUX-L
AUX-R
SUBWOOFER
PC IN
16
6
13
7
JL239
JL240
1
2
3
3P
CN690
FAN+
FAN+
FAN-
JL241
M101
(DC FAN)
*R225
*R226
2.2k
R223
R224
E4
2.2k
JL255
JL256
JL259
JL261
JL254
JL258
JL253
JL257
JL260
1
2
3
4
5
6
7
8
9
9P
CN220
ST-L
ST+9V
ST-R
GND
TUNED
ST-CE
ST-DIN
ST-CLK
ST-DOUT
65
44
61
63
67
ST-L
ST-R
JL218
JL212
JL222
JL221
JL216
JL220
JL211
JL214
JL213
JL219
JL250
JL251
JL217
1
2
3
4
5
6
7
8
9
10
11
12
13
13P
CN479
SW-IN
R-IN
PREGND
L-IN
STK MUTE
PROTECT
UNREG+16V
HP-R
POWER GND
HP-L
SPK RELAY
SW-OUT
SW-Gnd
SW-OUT
OUT-L
OUT-R
12
D692
MAZ8056GMLS0
AC CUT DETECT
AC CUT DETECT
FAN MOTOR DRIVE
IC678
9.0
18.6
3.3
8.9
19.0
5.3
0.8
3.6
18.6
14.5
19.0
3.7
IC600
12.1
18.5
5.0
5.6
7.5
1.0
0.8
0.8
0.3
0.3
0.3
0.3
0
0
3.6
0
12.1
0.2
12.1
12.1
MAIN BOARD (3/3)
1
2
3
4
5
6
7
8
9
10
11
14
15
12
13
A
B
C
D
E
F
G
H
I
J
M
A008
E
(CHASSIS)
ET602
E
(CHASSIS)
FM 75
:
ANTENNA
AM
TUNER
COAXIAL
(FM/AM)
*R635
3.9k : GTR33
3.3k : GTR55/77
*R637,*R638
560 2W :
GTR33
680 2W : GTR55/77
*R225,*R226
6.8k : E4
3.9k : Except E4