Read Sony DSX-A55BT / DSX-A55BTE Service Manual online
DSX-A55BT/A55BTE
28
IC402 S-1142B90I-E6T1U
VOUT 1
ON/OFF 3
VIN
6
NC
4
VSS
5
VSS 2
+
–
–
OVERCURRENT
PROTECTOR
THERMAL
SHUTDOWN
REFERENCE
VOLTAGE
ON/OFF
CONTROL
IC501 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
+
–
+
–
+
–
+
–
–
IC603 NJM2884U2-05 (TE2)
5
VIN
4
VOUT
2
GND
3
N.C.
1
CONTROL
BANDGAP
REFERENCE
THERMAL
PROTECTION
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