Connection Diagrams - NEC NC1600C Service Manual

Connector pin array
CPU PWB (PWC-4651) 1/2
POIF Connect to PLKEY PWB
1
GND
2
3 I2C CLK
4 I2C Data
5
5V Standby
6
7
3.3V Standby
8
9
GND
10
11 KEY matrix (KEYIN1)
12 KEY matrix (KEYIN0)
13 KEY matrix (KEYIN3)
14 KEY matrix (KEYIN2)
15 KEY matrix (KEYOUT0)
16 NC
17 KEY matrix (KEYOUT2)
18 KEY matrix (KEYOUT1)
19 KEY matrix (KEYOUT4)
20 KEY matrix (KEYOUT3)
21 Status LED (Red) CTL (L : Light)
22 Status LED (Green) CTL (L : Light)
23 Power LED (Red) CTL (L : Light)
24 Power LED (Green) CTL (L : Light)
25
GND
26
27
5V Standby
28
29 LCD CTL (B6)
30 LCD CTL (B7)
31 LCD CTL (B4)
32 LCD CTL (B5)
33 LCD CTL (E)
34 Detect Backlight SW (L: ON H: OFF)
35 LCD CTL (RS)
36 LCD CTL (RXW)
37
GND
38
39 Reset (3.3V constant)
40 IR (3.3V pulse)
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CONNECTION DIAGRAMS

POCF
1
2
3
4
5
6
7
8
9
10
POCE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
POCP
1
2
3
4
5
6
7
12-2
Connect to PJDIV PWB
I2C CLK
I2C Data
GND
3wire CLK
3wire Data
3wire CS1
3wire CS2
3wire CS3
GND
GND
Connect to PJDIV PWB
Lamp stop (L : OK H : NG)
Power BIT in (L: Main PS ON H: Main PS OFF)
GND
NC
FD1 for Pump (Pulse: OK Non pulse: NG)
NC
FD2 for Pump (Pulse: OK Non pulse : NG)
Pump CTL (L: Pump ON H: Pump OFF)
FD3 for Pump (Pulse: OK Non pulse: NG)
GND
Rear status LED (Red) CTL (L: ON H: OFF)
Rear status LED (Green) CTL (L: ON H: OFF)
Power good status (L: OK H: Fail)
Power good CTL (L: OK H: Fail)
Interlock status (L: Interlock OK H: Interlock NG)
Connect to PJDIV PWB
5V Standby
GND
NC
GND
5V Main
GND