Schematic Diagram Of Cb Board - Sony KP-41PX1 Service Manual

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Schematic Diagram of CB Board

TO FOCUS BLOCK
CB
(BLUE AMP)
CN764
12
GND
11
NC
10
CN763
1P G2
R778
WHT
R762 33k
:MINI 1/2W
560k
1/2W :RC
G2 1
C763
1000p
SG761 SG762
TO FOCUS PACK
2kV
E
CN761
:FASTON
R761
100
1/2W
:RC
L762
150µH
:EL0606
D765
C769 C770
47 # 1SS133
CN762 25V B
PROT
5P
WHT
:S-MICRO
TO CG BOARD CN732
IKB 5
GND 4 9V
9V 3 8.4
GND 2 B R765
100 1.6
B 1
R780 R781
JW(5) 56k
1.0
1.6
1 Q763
2SC3311A
2.6
AMP
C772
R770
47
R782
120
16V
22k
Q765
1/4W
2SA1309A
PEAK-LIMIT
G1 G2 G4
4 10 1,2
V903
6 PICTURE
H HV.BLOCK
7 TUBE
(B)
G3 G5
K 8
CN766
SG763
10P
FGND WHT
R771
:S-MICRO
100
R769
1
1k 1/2W
:RC TO E(4/4)BOARD
1/2W
G1 CN501
:RC
4
1 B/S
G1 2 R/S
5
3 NC
6
H(+)
9 7
8 4 H(+)
NC K H(-) 5 H(-)
B 6 NC
2
7 NC
C766 R768
8 200V
330p 680k
2kV 1/2W
9 NC
:B
10 GND
TP761
R766
1k
R763 R764 C765
1/2W
12k 12k 0.0047 C767 L761
3W 3W 500V 22 470µH
200V
:RS :RS E
250V :EL0606
CN765
9P
WHT
B
D761 :S-MICRO
1SS133
TO CG BOARD CN737
PROT
R/S
1
NC
2
3 H(+)
C768
47p
4 H(-)
R767
4.7k
5 NC
D762 D763
140.1
1SS133 1SS133
6 NC
138.2
Q761
PROT PROT
2SA10910 7 200V
SW
D766 8 NC
1SS133 6.3
B R779
9 GND
SW 220
138.2 R774
#
Q762
2SC2611
BLUEAMP
R775
R776
# 47k
R773
100
0.8
C764
0.8
820p
B
R772
22
Q764
R777 C762
2SA1309A
4.3k 10
GAMMA COMP 50V
B-SS774.<AEP>-CB.-05
• CB BOARD WAVEFORMS
1
2
3.5 Vp-p (H) 117 Vp-p (H)
CB
BLUE AMP
— CB BOARD —
NOTE:
The circuit indicated as left contains high voltage of over
600 Vp-p. Care must be paid to prevent an electric shock in
inspection or repairing.
– 89 –
KP-41PX1/41PX1K/41PX1R
K
RM-892 RM-892 RM-862