Sony Walkman MZ-RH1 Service Manual page 43

IC901 SC901584EPR2
48 47 46 45
SERIAL
PASS
REGULATOR 3
REGC2 49
REG2G 50
SERIAL
REGO2 51 PASS
REGULATOR 2
REGI2 52
REGC1 53
SERIAL
REGO1 54 PASS
REGULATOR 1
REGI1 55
VG SELECT, VG DUTY
VREF0
GND 56
VREF 57
CLK
DATA 58
STRB 59
CLK 60
WDT 61
CONTROL
SEQSEL 62
CLK 63
SLEEP 64
1 2 3 4 5 6
IC982 R1180Q221B-TR-FA
4 VDD
CE 1 REGULATOR
GND 2 3 VOUT
44 43 42 41 40
VC2
POWER
SWITCH 2
UP-DOWN
RST2
MUTING
BUFFER
RST1
RST2
VC
BANDGAP
REFERENCE
VREF0
REF DAC
RST1
LVB
DRIVER
VC
VREF
RST2
POWER
SWITCH 1
VC
7 8 9 10 11
39 38 37 36 35 34 33
RESET 2
STEP
VC2
DRIVER
REF2
VREF
PWM
VREF
REF2
STEP UP
START UP
DC/DC CONVERTER
REF1
VC
VREF
PWM
REF1
VC
STEP
UP-DOWN
VREF
DRIVER
12 13 14 15 16
RST2
32 DTC2
31 RF2
30 INM2
29 VGSEL1
28 VGSEL2
VB
27 VB
26 PGND3
25 LG
24 VG
23 C1L
22 INM1
21 RF1
20 DTC1
RST1
19 XRST1ADJ
18 CRST1
17 XRST1
RESET 1
MZ-RH1
43