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Service manual WP 895/895F, CP885/885F
2
4
3
DRAIN
I801
MOFSET AND
CONTROL IC
1
MAIN AC VOLTAGE
I804
OPTO
COUPLER
I823 3.3V
REGULATOR
I703 IR
RECEIVER
FRONT
MASK
BUTTONS
I810
CONTROLLED
RECTIFIER
SWITCHING
CIRCUIT
T801 SM PS TRAN S
I501
MAIN
IC
OCP
FB
D801...D804
GRAETZ BRIDGE
16
D821
I810
controlled rectifier
HIGH
C841
C840
R713
1
3
1
2
61
64
56
54
7
63
CONDUCTING
IR IN
µ
com
supply
voltage
KEY IN
POWER
R888
C888
Q809
Q810
Q811
D811
D825
R810
L801
D806
C808
SW801
POWER SWITCH
C850
R806
8
4
3
1
2
R870
HIGH
LOW
LOW
CONDUCTING
CONDUCTING
AROUND
6Vdc
AROUND
3.3Vdc
Fig : Power supply operation in stand - by mode