Service manual

FO-4400U
FO-CS1
5 – 9
LC24199B-WJ0-E (IC21) Terminal description (1/2)
PIN I/O Name Function PIN I/O Name Function
1 P VSS 55 P VSS Ground
2 Not connect 56 N.C Not connect
3 I XCI1 CI detect signal 57 B DPOPCL10 GPO bus for PCL board
4 O ERLY0 Reserved for 200V 58 B DPOPCL11 GPO bus for PCL board
5 O GAINC0 Reserved for 200V 59 B DPOPCL12 GPO bus for PCL board
6 O DPMUTE0 Reserved for 200V 60 B DPOPCL13 GPO bus for PCL board
7 O CML0 CML relay control signal 61 B DPOPCL14 GPO bus for PCL board
8 O TXMUTE0 Mute control for TX signal 62 B DPOPCL15 GPO bus for PCL board
9 O DPON0 Active choke control 63 DPAPCL0 Address bus for NIC board (PCL)
10 I XEXHS0 Hook detect signal for external telephone 64 DPAPCL1
11 I XCI0 CI detect signal 65
I
DPAPCL2
12 I Print data form main 66 DPAPCL3
13 O CTBSYB Controller status busy 67 DPAPCL4
14 O CPRDYB Controller power ready 68 DPAPCL5
15 I ETBSYB Engine status busy 69 DPAPCL6
16 P VDD Power supply 70 VDD Power supply
17 P VSS Ground 71 VSS Ground
18 I PRRDYB Printer ready 72 DPAPCL7
19 I EPRDYB Engine power ready 73 DPAPCL8
20 O PDATA Video data of printer 74 DPAPCL9
21 O PCURESB PCU reset signal 75 DPAPCL10
22 O PCLK Serial communication clock 76 DPAPCL11
23 I PSTS Status data from PCU 77 DPAPCL12
24 O PCMD Command data to PCU 78 DPAPCL13
25 I CTBSYPCLB Controller status busy in PCL mode 79 DPAPCL14
26 I CPRDYPCLB Controller power ready in PCL mode 80 DPAPCL15
27 O ETBSYPCLB Engine status busy in PCL mode 81 DPAPCL16
28 O PRRDYPCLB Printer ready in PCL mode 82 XCSNICP Chip select signal
29 O EPRDYPCLB Engine power ready in PCL mode 83
BD
PONIC0 DPO bus for NIC board
30 I PDATAINPCL Video data from PCL 84 B DPONIC1 DPO bus for NIC board
31 O PCLRESB PCL reset signal 85 B DPONIC2 DPO bus for NIC board
32 O XNICACKP Acknowledge signal for NIC in PCL mode 86 B DPONIC3
33 I RXWP READ/WRITE signal from PCL 8 DPONIC4
34 P VDD Power supply 88 VDD Power supply
35 P VSS Ground 89 P VSS Ground
36 I PCLKPCL Serial communication clock in PCL mode 90 DPONIC5
37 O PSTSPCL Status data from PCU in PCL mode 91 B DPONIC6
38 I PCMDPCL Command data to PCL in PCL mode 92 B DPONIC7
39 O PACK Printing acknowledge signal 93 B DPONIC8
40 I PREQ Printing request signal 94 B DPONIC9 DPO bus for NIC board
41 B DPOPCL0 GPO bus for PCL board 95 B DPONIC10
42 B DPOPCL1 GPO bus for PCL board 96 B DPONIC11
43 B DPOPCL2 GPO bus for PCL board 97 B DPONIC12 DPO Bus for NIC Board(*2)
44 B DPOPCL3 GPO bus for PCL board 98 B DPONIC13 DPO Bus for NIC Board(*2)
45 B DPOPCL4 GPO bus for PCL board 99 B DPONIC14 DPO Bus for NIC Board(*2)
46 B DPOPCL5 GPO bus for PCL board 100 B DPONIC15 DPO Bus for NIC Board(*2)
47 B DPOPCL6 GPO bus for PCL board 101 O NICRESB Reset for NIC
48 B DPOPCL7 GPO bus for PCL board 102 O RXWNIC R/W signal for NIC
49 B DPOPCL8 GPO bus for PCL board 103 O XNICACKH XACK to HOST
50 B DPOPCL9 GPO bus for PCL board 104 O XCSNIC Chip Select Signal for NIC
51 N.C Not connect 105 N.C Not connect
52 P VDD Power supply 106 P VDD Power supply
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7
P
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PDATAM
Ground
Address bus for NIC board (PCL)
Address bus for NIC board (PCL)
Address bus for NIC board (PCL)
Address bus for NIC board (PCL)
Address bus for NIC board (PCL)
Address bus for NIC board (PCL)
Address bus for NIC board (PCL)
Address bus for NIC board (PCL)
Address bus for NIC board (PCL)
Address bus for NIC board (PCL)
Address bus for NIC board (PCL)
Address bus for NIC board (PCL)
Address bus for NIC board (PCL)
Address bus for NIC board (PCL)
Address bus for NIC board (PCL)
Address bus for NIC board (PCL)
DPO bus for NIC board
DPO bus for NIC board
DPO bus for NIC board
DPO bus for NIC board
DPO bus for NIC board
DPO bus for NIC board
DPO bus for NIC board
DPO bus for NIC board
N.C