Sony CDX-GT522U / CDX-GT527U Service Manual ▷ View online
CDX-GT522U/GT527U
37
• IC Block Diagrams
– MAIN Board –
IC301 TDF8556AJ/N5
MUTE
MUTE
ENABLE
LOGIC
STANDBY/
MUTE
CHIP DETECT/
DIAGNOSTIC
PROTECTION/
DIAGNOSTIC
SWITCH
REGULATOR
SWITCH
REFERENCE
VOLTAGE
LOAD DUMP
PROTECTION
TEMPERATURE
PROTECTION
BACK-UP
SWITCH
REGULATOR
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
TAB
OUT-FL–
OUT-FL+
OUT-RL–
OUT-RL+
IN-RL
S-GND
IN-RR
OUT-RR+
OUT-RR–
OUT-FR+
OUT-FR–
DIAG
ANT-REM
AMP-REM
SERVO+3.3V
MECHA+6V
VP
BU+B
I2C_SIO
I2C_SCK
VP2
P-GND1
SVR
IN-FL
IN-FR
BEEP
P-GND3
VP1
STB
P-GND4
RST
CRES
AUDIO+B
(8.5V)
(8.5V)
GND
PANEL+B
CBU
FL
RL
RR
VP
FR
I
2
C BUS
CDX-GT522U/GT527U
38
IC402 MM1836A33NRE
VOUT
4
CONT 1
GND 2
NC 3
VIN
5
+
–
VOLTAGE
REFERENCE
REGULATOR
CURRENT
LIMIT
THERMAL
SHUTDOWN
BIAS
IC401 BD3467FV-E2
IC603 BU33TD3WG-TR
IC681, 682 BU15TD3WG-TR
IC681, 682 BU15TD3WG-TR
2
GND
1
VIN
VOUT
5
VOLTAGE
REFERENCE
3
STBY
NC
4
STANDBY
OVER CURRENT
PROTECTION
THERMAL
SHUTDOWN
+
–
A1 1
INPUT SELECTOR
(2 SINGLE-END AND 4 STEREO ISO)
MUTE
MAIN GAIN
ADJUST
SUB GAIN
ADJUST
I2C
BUS
LOGIC
2ND ORDER LOW-PASS FILTER
INPUT GAIN
OUTC
40
A2 2
B1 3
B2 4
CP1 5
CN 6
CP2 7
ISO
GND
AMP
ISO
GND
AMP
DP1 8
DN 9
DP2 10
ISO
GND
AMP
ISO
GND
AMP
EP1 11
EN 12
EP2 13
ISO
GND
AMP
ISO
GND
AMP
FP1 14
FN1 15
ISO
GND
AMP
FN2 16
FP2 17
MIN 18
SPA1 19
SPA2 20
ISO
GND
AMP
OUTS
39
OUTR1
38
OUTR2
37
OUTF1
36
OUTF2
35
INF2
34
IG1
28
IG2
27
VCC
26
INF1
33
INR2
32
INR1
31
INS
30
INC
29
FADER
ATT
FADER
ATT
FADER
ATT
FADER
ATT
FADER
ATT
FADER
ATT
FADER
BOOST
FADER
BOOST
FADER
BOOST
FADER
BOOST
FADER
BOOST
FADER
BOOST
+
+
VCC
FIL
25
GND
24
SDA
23
SCL
22
MUTEB
21
CDX-GT522U/GT527U
39
– KEY Board –
IC901 PT16512-LQ
IC1300 OZ539IGN-A1-0-TR
BST 1
LX 2
FLT_USB
9
VIN 3
EN_SYS 4
USBOUT 5
ISET_USB
10
RT
15
VREF
16
FB_USB 6
USBIN
2V
UVLS
7
SYNC 8
GNDA
14
VIC_USB
11
SS_SYS
13
EN_USB
12
HDR
+
OSCILLATOR
REFERENCE
GENERATOR
OVER CURRENT
PROTECTION
VS
SEL
Q
S
R
R
ADJUSTMENT
GENERATOR
CHARGE
PUMP
OVER-CURRENT
LIMIT
USB FAULT
PROTECITON
VOUT_SYS (USBIN)
FAULT PROTECTION
+
–
+
–
+
–
+
–
–
GP1/SEG1/PW1 1
GP2/SEG2/PW2 2
GP3/SEG3/PW3 3
GP2/SEG2/PW2 2
GP3/SEG3/PW3 3
GP4/SEG4 4
GP5/SEG5 5
GP6/SEG6 6
GP7/SEG7 7
GP8/SEG8 8
GP5/SEG5 5
GP6/SEG6 6
GP7/SEG7 7
GP8/SEG8 8
SEG9 9
SEG10 10
SEG11 11
SEG12 12
SEG13 13
SEG14 14
SEG15 15
SEG16 16
SEG13 13
SEG14 14
SEG15 15
SEG16 16
SEG42
42
SEG41
41
SEG40
40
SEG39
39
SEG38
38
SEG37
37
SEG48
48
SEG47
47
SEG46
46
SEG45
45
SEG44
44
SEG43
43
SEG36
36
SEG35
35
SEG34
34
SEG33
33
SEG17
17
SEG18
18
SEG19
19
SEG20
20
SEG21
21
SEG22
22
SEG23
23
SEG24
24
SEG25
25
SEG26
26
SEG27
27
SEG28
28
SEG29
29
SEG30
30
SEG31
31
SEG32
32
INHB
61
VLCD1
57
VDD
56
SEG52/OSC
60
VSS
59
VLCD2
58
SEG51
55
SEG49
49
SEG50
50
COM1
54
COM2
53
COM3
52
COM4
51
CLOCK
GENERATOR
SEGMENT DRIVER
&
LATCH
COMMON
DRIVER
CS
62
SI
64
CLK
63
SHIFT
REGISTER
ADDRESS
DETECTOR
PWM
DRIVER
CDX-GT522U/GT527U
40
• IC Pin Function Description
MAIN BOARD IC501 R5F3650ECDZ98FB (MAIN SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
NOSE_SW
I
Front panel remove/attach detection signal input terminal “L”: Front panel is attached
2
SIRCS
I
Remote control signal input from the remote control signal receiver
3
UNISO
-
Not used
4
UNISI
-
Not used
5
UNISCK
-
Not used
6
BYTE
I
External data bus width select signal input Connect to VSS in this unit
7
CNVSS
I
Flash write signal input terminal Normally operation: “L”, Flash write: “H”
8
XIN
I
Low speed operation clock signal input terminal (32.768 kHz)
9
XOUT
O
Low speed operation clock signal output terminal (32.768 kHz)
10
RESET
I
System reset signal input terminal Not used
11
OSCOUT
O
High speed operation clock signal output terminal (7.92 MHz)
12
VSS
-
Ground terminal
13
OSCIN
I
High speed operation clock signal input terminal (7.92 MHz)
14
VCC1
-
Power supply terminal (+3.3V)
15
NMI
I
Non-maskable interrupt signal input terminal Fixed at “H” in this unit
16
MEC_SELFSW
I
Detection signal input from the CD section (self switch)
17
BUIN
I
Back up power supply detection signal input terminal “L” is input at low voltage
18
NCO
-
Not used
19
RC_IN1
I
Rotary remote commander shift key input terminal
20
MC_RX
I
Serial data input from the sub system controller
21
NCO
-
Not used
22
MC_TX
O
Serial data output to the sub system controller
23
NCO
-
Not used
24
SYNC_OUT
O
Synchronize signal output to the DC/DC converter
25
SYNC_PRE5V_ON
-
Not used
26
BEEP
O
Beep sound drive signal output to the power amplifi er
27
I2C_SCK
O
IIC serial clock signal output terminal
28
I2C_SIO
I/O
IIC two-way serial data bus terminal
29
FW_TXD
O
Flash writer data output terminal
30
FW_RXD
I
Flash writer data input terminal
31
FW_CLK
I
Flash writer clock signal output terminal
32
FW_BUSY
O
Flash writer busy signal output terminal
33
XM_TX
O
Serial data output terminal Not used
34
XM_RX
I
Serial data input terminal Not used
35
XM_POWER_EN
O
Power supply on/off control signal output terminal Not used
36 to 38
NCO
-
Not used
39
EPM
O
EPM signal output terminal Fixed at “L” in this unit
40
NCO
-
Not used
41
MEC_LOAD
O
Motor (Loading) signal output to the CD section
42
MEC_EJECT
O
Motor (Eject) signal output to the CD section
43
NCO
-
Not used
44
CE
I
Chip enable signal input terminal Fixed at “H” in this unit
45
HIT2_DATA
I/O
IIC two-way serial data bus with the tuner unit
46
HIT2_SCL
O
IIC serial clock signal output to the tuner unit
47
HIT2_RESET
O
Reset signal output to the tuner unit
48 to 50
NCO
-
Not used
51
EN_SYS
O
Power supply on/off control signal output to the DC/DC converter
52
IPOD
-
Not used
53
NCO
-
Not used
54
NA
-
Not apply
55
ACC_IN
I
Accessory power detection signal input terminal “L”: accessory power on
56
ATT
O
Muting on/off control signal output terminal “H”: muting on
57
DIAG
I
Diagnostic signal input from the power amplifi er
58
AMPSTB
O
Standby control signal output to the power amplifi er
59
GHOST_RST
O
Reset signal output to the sub system controller
60
VCC2
-
Power supply terminal (+3.3V)
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