Panasonic CQ-5800U Service Manual page 7

Note 1 :
Voltage measuerments are with respect to ground,
with a voltmeter (internal resistance : 10M ohms).
4.1.2. Display Block
IC901:C0HBA0000246
Pin. PORT
No.
1 P1 General-purpose output
2 P2 General-purpose output
3 P3 General-purpose output
4 P4 NC
5 S5 Segment outputs
6 S6 Segment outputs
7 S7 Segment outputs
8 S8 Segment outputs
9 S9 Segment outputs
10 S10 Segment outputs
11 S11 Segment outputs
12 S12 Segment outputs
13 S13 Segment outputs
14 S14 Segment outputs
15 S15 Segment outputs
16 S16 Segment outputs
17 S17 Segment outputs
18 S18 Segment outputs
19 S19 Segment outputs
20 S20 Segment outputs
21 S21 Segment outputs
22 S22 Segment outputs
23 S23 Segment outputs
24 S24 Segment outputs
25 S25 Segment outputs
26 S26 Segment outputs
27 S27 Segment outputs
28 S28 Segment outputs
29 S29 Segment outputs
30 S30 Segment outputs
31 S31 Segment outputs
32 S32 Segment outputs
33 S33 Segment outputs
34 S34 Segment outputs
35 S35 Segment outputs
36 S36 Segment outputs
37 S37 Segment outputs
38 S38 Segment outputs
39 COM4 Common driver outputs
40 COM3 Common driver outputs
41 COM2 Common driver outputs
42 COM1 Common driver outputs
43 KS1 NC
44 KS2 Key scan outputs
45 KS3 Key scan outputs
46 KS4 Key scan outputs
47 KS5 Key scan outputs
48 KS6 Key scan outputs
49 KI1 Key scan inputs
50 KI2 Key scan inputs
51 KI3 Key scan inputs
52 KI4 Key scan inputs
53 KI5 Key scan inputs
54 VDD Logic block power supply
55 VLCD LCD driver block power supply
56 VLCD1 LCD drive bias voltage
57 VLCD2 LCD drive bias voltage
58 VSS Ground
59 TEST Must be connected to ground
60 OSC Oscillator circuit port
61 DO Output data
62 CE Chip enable
63 CL Synchronization clock
64 DI Transfer data
Description I/O
O
O
O
-
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
-
O
O
O
O
O
I
I
I
I
I
-
-
-
-
-
I
I/O
O
I
I
I
4.2. IC Block Diagram
4.2.1. Main Block
(V)
5.1
5.1
5.1
0
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.58
2.56
5.17
5.17
5.17
5.17
5.17
0.1
0
0
0
0
3.3
5.18
3.4
1.72
0
0
2.3
3.3
0
2.7
2.6
7
P50:C5BA00000122
P51:J3CZAB000001
IC200:C1EA00000041