Key & Vfd Board - Philips MCD109/98 Service Manual
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Also See for MCD109/98:
- Quick start manual (4 pages) ,
- User manual (30 pages) ,
- Service manual (42 pages)
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5-1
KEY & VFD BOARD
TABLE OF CONTENTS
FTD Display Pin Assignment ........................................... 5-1
Circuit Diagram ................................................................ 5-2
PCB Layout Top & Bottom View ...................................... 5-3
Electrical Parts List .......................................................... 5-4
FTD DISPLAY PIN ASSIGNMENT
PIN CONNECTION
## Note ##
1. Fn: Filament pin
2. NP : No Pin
3. NX : No Extended Pin
4. nG : Grid Pin
5. PN : Anode Pin
IC Pin Voltage
IC200-PT6311(PTC)
Pin NO
1
2
3
4
5
6
7
8
Voltage
2.00
2.00
2.00
2.00
3.70
3.70
0.00
3.30
Pin NO
21
22
23
24
25
26
27
28
Voltage
-12.6
-18.2
-20
-12.8
-12.8
-21.8
-18.5
-20
Pin NO
41
42
43
44
45
46
47
48
Voltage
-20.1
-20.2
-20.2
-20.3
4.40
4.40
44.00
4.40
5-1
9
10
11
12
13
14
15
16
17
3.30
0.00
0.00
0.00
0.00
4.60
-21.7
-12.9
-20
-18.2
29
30
31
32
33
34
35
36
37
-13
-22.2
-20.5
-20.2
4.40
-22
-22.1
-20.2
-20.1
-20.1
49
50
51
52
4.40
4.40
0.00
2.30
18
19
20
-21.8
-14.7
38
39
40
-20
-20.1
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