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2.3.
Power (SA-PT770P/PC & SA-PT770P9/PC9)
With reference to original service manual (section 14.8) on page 110 for model no. SA-PT770P/PC-K
With reference to SA-PT770P/PC-K (section 14.8) on page 110 for model no. SA-PT770P9/PC9-K
H2901* CN2016
SYS5V
SYS5V
13
H2900*
CN2017
PCONT
TO/FROM
6
SYSTEM CONTROL
H2901* CN2016
SYNC
14
M+9V
TUNER PACK
CN2002*
9
T+9V
TO
DC DET1
SYSTEM CONTROL
+7V
A+5V
IC8111
C0DBFZG00001
SWITCHING
REGULATOR
FP8101
CN2001
D+3.3V
6
D +3.3V
VCC 3
13, 23, 25, 27
VCC 1
2
RST O
1.2V
7
FP8101
CN2001
ADAC5V
11
NSW1.2V
5.3V
SW+5V
CN5500
H5801*
FAN DC
1
TO
H2900* CN2017
DCDET
SYSTEM CONTROL
5
+ 18V
-7V
VDDP
VSSP
Q2928
SWITCHING
AMBP
FROM
SYSTEM CONTROL
H2900*
CN2017
ECO CTL
7
Q2919
DC DETECT
H2901* CN2016
9
Q2909
DC DETECT
Q2903
H2900*
CN2017
+7V REGULATOR
1
Q2923, Q2924
CHANGE
DC DETECT
IC2903
C0DAAMH00012
C0DAAYH00001
D+5V
SWITCHING
REGULATOR
2
OUT
ADAC5V
H2901*
CN2016
6,7
FAN 18V
H2900*
IC5899
C0DAEMZ00001
SHUNT
REGULATOR
2
CHANGE
IC2900
C0DAAYY00042
C0DAAYG00001
SWITCHING
REGULATOR
2
OUT
VCC 1
Q5899
RELAY DRIVE
Q5898
VCC 1
INVERTER
Q2902
POWER
QR5840
CONTROL
DC DETECT
D5843
Q5841
DC DETECT
DC18V
H2901*
CN2016
11
Q2901
CN2017
- 13V
-7V
4
REGULATOR
CN5500
H5801*
VDD
7, 8
CN5500
H5801*
VSS
3, 4
IC5801
C0DABFC00002
SHUNT
REGULATOR
Q5863
FEED BACK CIRCUIT
7
IC5799
T5751
MIP2F20MSSCF
SWITCHING
BACKUP
TRANSFORMER
REGULATOR
3
5
D
3 TR
D5896
7
2
D5798
6
4
VCC
PC5799
2
FB
FEED BACK
1
3
D5799
F2
RY5701
PC5702
SYNC
SWITCH
T5701
MAIN
TRANSFORMER
D5701
D5805
L5703
L5702
TH5702
15
4
5
D5803
IC5701
17
C5HACYY00004
SWITCHING
REGULATOR
D5804
Q5720
18
CURRENT
2
LIMITING
D5802
4
VCC
SWITCH
14
7
D5801
11
1
8
D
PC5720
FEED BACK
6
FB
P5701
AC INLET
L5701
DZ5701
F1
SA-PT770P/PC POWER BLOCK DIAGRAM
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