Sony CDX-GT57UP Service Manual page 27

IC1300 OZ539IGN-A1-0-TR
BST 1
HDR Q
LX 2
OVER CURRENT
PROTECTION
VIN 3
EN_SYS 4
USBOUT 5
FB_USB 6
VS
SEL
USBIN 7
VOUT_SYS (USBIN)
FAULT PROTECTION
SYNC 8
– KEY Board –
IC901 PT6587-LQ
48 47 46 45
SEG49 49
SEG50 50
COM4 51
COM3 52 COMMON
DRIVER
COM2 53
COM1 54
SEG51 55
VDD 56
VLCD1 57
VLCD2 58
VSS 59
SEG52/OSC 60
INHB 61
ADDRESS
CS 62
DETECTOR
CLK 63
SI 64
1 2 3 4 5 6 7 8 9 10 11 12
S
OSCILLATOR
R
REFERENCE
GENERATOR
+
ADJUSTMENT
GENERATOR
CHARGE
PUMP
OVER-CURRENT
LIMIT
2V
+
UVLS
–
USB FAULT
PROTECITON
44 43 42 41 40 39 38 37 36 35 34 33
CLOCK
GENERATOR
13 14 15 16
16 VREF
15 RT
14 GNDA
13 SS_SYS
12 EN_USB
11 VIC_USB
10 ISET_USB
9 FLT_USB
32 SEG32
SEG31
31
SEG30
30
29 SEG29
28 SEG28
27 SEG27
26 SEG26
25 SEG25
SEG24
24
SEG23
23
22 SEG22
21 SEG21
20 SEG20
19 SEG19
18 SEG18
SEG17
17
CDX-GT57UP
27