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Philips FW-C780/22/37 Servise Manual page 28

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KEY-CDC BOARD - COMPONENT LAYOUT
This assembly drawing shows a summary of all possible versions. For components used in a specific version see schematic diagram and respective parts list.
KEY-CDC BOARD - CHIP LAYOUT
This assembly drawing shows a summary of all possible versions. For components used in a specific version see schematic diagram and respective parts list.
VU METER BOARD - COMPONENT LAYOUT
This assembly drawing shows a summary of all possible versions.
For components used in a specific version see schematic diagram and respective parts list.
3139 113 3446 pt1 dd wk0047
5-4
VU METER BOARD - CHIP LAYOUT
This assembly drawing shows a summary of all possible versions.
For components used in a specific version see schematic diagram and respective parts list.
3139 113 3446 pt1 dd wk0047
KEY-CDC BOARD - CIRCUIT DIAGRAM
1800 A3
1802 B2
1801 B2
1803 B2
Note : Some values may varies, see respective parts list for correct value.
A
3139 113 3446 pt1 dd wk0047
B
GND-B GND-B
3139 113 3446 pt1 dd wk0047
VU METER BOARD - CIRCUIT DIAGRAM
1840 C1
2842 D2
3841 A1
2840 A2
2843 D3
3842 A2
2841 A2
2844 D4
3843 A2
1
Note : Some values may varies, see respective parts list for correct value.
# : Provision
A
1N4148
B
1840
FE-BT-VK-N
1
2
VUMeter
C
3
+5V6
4
Gnd
5
6
To Front
D
1
5-4
1804 B1
2800 B1
3801 A1
3803 A1
3805 A2
3807 A3
6803 A1
1805 B1
3800 A1
3802 A2
3804 A1
3806 A2
6802 A1
6804 A2
1
2
3
FE-ST-VK-N
1800
1
GND
2
3
4
3803
3804
3805
3806
3807
5
560R
390R
270R
220R
150R
6
GND-B
GND-B
GND-B
GND-B
GND-B
3139 118 54530...for 89610...3446 pt1 dd wk0047
1
2
3
3844 A3
3847 D4
3850 C4
4843 A2
6841 A3
6844 D3
7843 D3
3845 D2
3848 C3
3851 A3
5600 A4
6842 A3
7841 A2
7844 D3
3846 D3
3849 C3
4842 A2
6840 A1
6843 D4
7842 C3
7845 D4
2
3
4
# 4842
+5V6
Vu-backlight
4843
+Vu
3851
7841
6840
180R
Gnd
BC847B
6842
3843
3844
1K
8K2
2840
5600
100p
Vu-meter
1
2
+5V6
+Vu
7842
BC857B
Bit0
Bit1
3845
7843
7844
BC857B
BC847B
BC847B
7845
1K2
2842
2843
2844
100p
100p
100p
Gnd
Gnd
Gnd
3139 118 54530...for 89650...3446 pt1 dd wk0047
2
3
4
A
B
A
B
C
D

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