Read Sony CDX-GT270MP / CDX-GT274MP / CDX-GT277ME / CDX-GT320MP Service Manual online
CDX-GT270MP/GT274MP/GT277ME/GT320MP
CDX-GT270MP/GT274MP/GT277ME/GT320MP
23
23
4-3. SCHEMATIC DIAGRAM - MAIN Section (2/2) -
• See page 20 for Waveforms. • See page 28 for IC Pin Function Description.
Note 1: When the system controller (IC501) in this unit is replaced, the destination setting is necessary. Refer
to “NOTE THE MAIN BOARD OR SYSTEM CONTROLLER (IC501) REPLACING” (page 4).
Note 2: When SERVO board is defective, ex-
change the complete mounted board.
Note 3: When SENSOR board is defective, exchange
the MECHANICAL BLOCK ASSY (X).
1
(1/2)
BOARD
MAIN
BOARD
KEY
A
CN902
2
1
<3.3>
3.3
0
0
<0>
<3.3>
<3.3>
<3.3>
3.3
3.3
<3.3>
<3.3>
<3.3>
<3.3>
<0>
<0>
<0>
<0>
3.3
2.3
2.5
3.3
0
0
0
3.3
0
0
3.3
0
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
0
0
0
0
1.3
1.4
3.3
1.6
1.5
3.3
3.3
3.3
3.3
<0.5>
<3.3>
<0>
0
3.3
3.3
<3.3>
100k
R561
100k
R541
0
R509
1k
R510
1k
R512
470
R570
100k
R519
100k
R532
100k
R533
10M
R501
150k
R508
100
R539
0.01
C510
C502
1000p
100
R530
10k
R540
100
R503
10k
R505
100
R502
10k
R504
1000p
C508
1000p
C509
0.01
C516
0.01
C515
0.1
C501
10k
R500
10k
R534
100k
R527
1k
R535
1k
R528
2.2k
R522
2.2k
R521
47p
C514
18p
C104
18p
C102
18p
C101
18p
C103
1000p
C106
C714
560p
0.01
C705
560p
C713
1k
R706
0.01
C706
R708
0
1k
R707
0.01
C707
100k
R577
7.92MHz
X501
FB703
FB702
FB705
0
R701
0
R703
100k
R571
10k
R559
10k
R560
33k
R562
33k
R566
CL003
CL004
1k
R511
1k
R543
CL005
1M
R581
0.01
C519
1k
R589
1k
R582
1k
R583
1k
R586
1k
R587
100
R588
100
R590
100
R591
100
R592
100
R593
100
R594
100
R595
100
R596
100
R597
100
R598
100
R544
100
R545
100
R546
100k
R568
CL049
CL042
CL051
CL056
CL048
2200p
C51
1
JL006
JL008
JL009
JL010
JL011
JL012
JL013
JL014
JL015
JL016
JL017
JL019
JL020
JL021
JL022
JL023
JL024
JL025
JL026
JL027
JL028
JL029
JL030
JL031
JL032
JL033
JL034
JL035
JL036
JL037
JL038
JL040
JL041
JL042
JL043
JL044
JL045
JL046
JL047
JL048
JL049
JL050
CL058
CL059
JL039
47p
C513
JL018
R551
100k
IC501
1
LCD_SO
2
LCD_CLK
3
NOSE_SW
4
SIRCS
5
NCO
6
NCO
7
NCO
8
BYTE
9
CNVSS
10
XIN
11
XOUT
12
RESET
13
OSCOUT
14
VSS
15
OSCIN
16
VCC1
17
NMI
18
RC_IN1
19
BUIN
20
NCO
21
NCO
22
DEC_SI
23
DEC_SCK
24
DEC_SO
25
NCO
26
NCO
27
DR
V_ON
28
BEEP
29
I2C_SCL
30
I2C_SDA
31
FW_TXD
32
FW_RXD
33
FW_CLK
34
FW_BUSY
35
NCO
36
NCO
37
NCO
38
MEC_LOAD
39
MEC_EJECT
40
CDON_1500MV
41
EPM
42
MEC_INSW
43
MEC_LIMIT
44
MEC_DSW
45
DEC_INT
46
CE
47
HIT2_SDA
48
HIT2_SCL
49
HIT2_RESET
50
DEC_XMUTE
51
CD_ZDET
52
CD_XCCE
53
DEC_SSTBY
54
DEC_RST
55
NCO
56
NCO
57
ACC_IN
58
AT
T
59
DIAG
60
AMPSTB
61
NCO
62
VCC2
63
NCO
64
VSS
65
NCO
66
NCO
67
NCO
68
NCO
69
NCO
70
NCO
71
NCO
72
NCO
73
NCO
74
NCO
75
MEC_SELFSW
76
NCO
77
NCO
78
NCO
79
DEBUG_1
80
DEBUG_2
81 RE-IN1
82 RE-IN0
83 RE_ON
84 NCO
85 NCO
86 NCO
87 NCO
88 NCO
89 NCO
90 NCO
91 KEYACK0
92 KEYACK1
93 NCO
94 KEYIN1
95 KEYIN0
96 AVSS
97 RC_IN0
98 AVRH
99 AVDD
100 LCD_CE
47p
C527
47p
C526
0.22
C520
100
R572
100
R585
0.1
C432
22p
C503
L101
RKZ6.8B2KGP1
D101
RKZ6.8B2KGP1
D102
RKZ6.8B2KGP1
D108
RKZ18B2KGP1
D105
RB751V40,115
D501
33k
R536
33k
R529
4.7k
R548
22p
C504
CN101
15P
3
AUX-LCH
2
KEY-GND
10
SIRCS
13
CLK-LCD
7
RE-1
4
AUX-RCH
14
+B
11
DATA-LCD
1
D-GND
8
KEY-1
5
AUX-GND
15
PANEL
12
CE-LCD
9
KEY-0
6
RE-0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
28P
CN701
MEC_DSW
MEC_LIMIT
MEC_INSW
MEC_SELFSW
CDON_1500MV
AU_8V
VDD_3.3V
D_GND
BU_3.3V
DR_6V
DR_GND
MEC_EJECT
MEC_LOAD
DRV_ON
DEC_INT
DEC_XMUTE
CD_ZDET
NC
NC
DEC_SO
DEC_SI
DEC_SCK
DEC_XCCE
DEC_SSTBY
DEC_RST
AU_RCH
AU_GND
AU_LCH
32.768KHz
X502
0.01
C704
JL007
JL005
JL004
JL003
JL002
JL001
STB
RCIN0
BU_IN
L-DA
L-CLK
MEC_INSW
MEC_LIMIT
MEC_DSW
CD_ZDET
DEC_SO
DEC_SCK
DEC_SI
MEC_EJECT
MEC_LOAD
CDON_1500MV
DEC_INT
CD_XCCE
DEC_STBY
DEC_RST
SADATA
SACLK
L-CE
BEEP
DEC_XMUTE
DR
V_ON
AT
T
RE-0
RE-1
MEC_DSW
MEC_LIMIT
MEC_INSW
MEC_SELFSW
CDON_1500MV
MEC_EJECT
MEC_LOAD
DRV_ON
DEC_INT
DEC_XMUTE
CD_ZDET
DEC_SO
DEC_SI
DEC_SCK
CD_XCCE
DEC_STBY
DEC_RST
DIAG
MEC_SELFSW
KEY0
KEY1
L-CE
L-DA
SIR
RE-1
RE-0
I2C_SCL
RESET
RCIN1
SIR
NOSE-SW
I2C_SDA
KEY1
KEY0
NOSE-SW
ACC
CD_RCH
CD_LCH
L-CLK
R5F3650KCDZ99FA
IC501
SYSTEM CONTROLLER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
MAIN BOARD (2/2)
(CHASSIS)
OPTICAL
PICK-UP
BLOCK
(DAX-25A)
BOARD
SERVO
BOARD
SENSOR
(MG-101X-188)
DECK BLOCK
CD MECHANISM
I
6
H
15
1
C
12
13
5
F
16
8
2
B
D
G
11
10
E
17
J
9
A
4
3
7
14
(Page 25)
(Page 22)
Click on the first or last page to see other CDX-GT270MP / CDX-GT274MP / CDX-GT277ME / CDX-GT320MP service manuals if exist.