Sony CDX-GT540UI, Service Manual

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CDX-GT54UIW/GT540UI
CDX-GT54UIW/GT540UI
22
22
1
2
3
5
4
C O N T
G ND
N O I SE
V IN
V O U T
OVERHEA
T &
OVERCURRENT
PROTECTION
BAND GAP
REFERENCE
CONTROL
CIRCUIT
•
IC Block Diagrams
IC301 TDA8588AJ/N2/R1 (MAIN Board (1/3))
IC402 TK1
1
133CSCL-G (MAIN Board (1/3))
IC801 BA8271F-E2 (MAIN Board (1/3))
M U T E
M U T E
ENABLE
LOGIC
STANDBY/
MUTE
BATTERY
DETECTION
CHIP DETECT/
DIAGNOSTIC
PROTECTION/
DIAGNOSTIC
SWITCH
R EG U LA T O R
SWITCH
REFERENCE
VOLTAGE
LOADDUMP
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
MECH-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)
GND PANEL+B CBU
FL RL RR
VP
FR
I 2
C BUS
1 2 3 4 5 6 7
8 9
10 14 13 12
11
BUS ON SWITCH
RESET
SWITCH
BA
TTER
Y
SWITCH
BUS_ON
RST
BA
T
T
CLK
VREF
GND
VCC RST BUS_IN CLK_IN BU_CHECK D
A
TA_IN
DA
TA_OUT
D
A
TA_I/O
IC501 TPS40200DRG4 (MAIN Board (2/3)) IC502 TC7WH123FU(TE12R) (MAIN Board (2/3)) IC503 NJM2387ADL3(TE2) (MAIN Board (2/3))
1 2
RC
GND DRV ISNS VCC
SS
3
COMP
4
FB
SOFT-START
AND
OVERCURRENT
700mV
ENABLE E/A E/A AND SS REFERENCE
7 8 6 5
UVLO
OSC
PWM
LOGIC
DRIVER
8
V C C
7
R X/ C X
6
C X
5
Q
1
A
2
B
3
C LR
4
G ND
1
2
3
4
5
CURRENT
LIMIT
THERMAL
PROTECTION
OVERVOLTAGE
PROTECTION
BAND GAP
REFERENCE
V
IN
CONT
VOUT
VADJ
G
N
D