Service manual
3) Pin description
Pin
No.
Signal
name
In/
Out
Function
1 RF Out Receipt side paper feed solenoid
2 JF Out Journal side paper feed solenoid
3 PCUT Out Printer partial cut signal (NU)
4 FCUT Out Printer auto cut signal (NU)
5 VF Out Multi line validation paper feed (NU)
6 STAMP Out Printer stamp signal (NU)
7 SLFS Out Slip printer paper feed singnal (NU)
8 SLRS Out Slip printer release signal (NU)
9 SLMTD Out Slip printer motor drive signal (NU)
10 RES Out Peripheral output reset
11 TRG Out Dot head trigger signal (NU)
12 TRG Out Dot head trigger signal
13 POFF In Power off signal input
14 INT1 In Interrupt signal (Key interrupt request)
15 HTS1 Out 8 bit serial port output
16 SCK1 Out Serial port shift clock output
17 STH1 In 8 bit serial port input
18 RAS VZ — Chip select (NU)
19 — — Nu
20 VCC — +5V
21 GND — GND
22 INTMCR — Interrupt (NU)
23 VRESC Out
Turns active when reset and power down
is met
24 SLTMG In Slip printer timing signal (NU)
25 SLRST In Slip printer reset signal (NU)
26 AS In Address strobe
27 RD In Read strobe
28 WR In Write strobe
29 φ In (φ) System clock (7.3728 MHz)
30
SDT7
Out
Slip printer printhead drive signal (dot7)
(NU)
31
SDT6
Out
Slip printer printhead drive signal (dot6)
(NU)
32
SDT5
Out
Slip printer printhead drive signal (dot5)
(NU)
33 GND — GND
34
SDT4
Out
Slip printer printhead drive signal (dot4)
(NU)
35
SDT3
Out
Slip printer printhead drive signal (dot3)
(NU)
36
SDT2
Out
Slip printer printhead drive signal (dot2)
(NU)
37
SDT1
Out
Slip printer printhead drive signal (dot1)
(NU)
38 D0 I/O Data bus 0
39 D1 I/O Data bus 1
40 D2 I/O Data bus 2
41 D3 I/O Data bus 3
42 GND — GND
43 D4 I/0 Data bus 4
44 D5 I/0 Data bus 5
45 D6 I/0 Data bus 6
46 D7 I/0 Data bus 7
47 SPRQ Out SSP interrupt request to CPU
48 RESET In MPCA reset
49 INT2 In Interrupt signal (Nu)
Pin
No.
Signal
name
In/
Out
Function
50 INT3 In Interrupt signal (Nu)
51 RXD2 Out 8 bit serial port output to CPU
52 TXD2 In 8 bit serial port input from CPU
53 SCK2 In Serial port shift clock input from CPU.
54 IRQ0 Out Interrupt request to CPU
55 A0 In Address bus 0
56 A1 In Address bus 1
57 A2 In Address bus 2
58 A3 In Address bus 3
59 A4 In Address bus 4
60 A5 In Address bus 5
61 GND — GND
62 VCC — +5V
63 A6 In Address bus 6
64 A7 In Address bus 7
65 A8 In Address bus 8
66 A9 In Address bus 9
67 A10 In Address bus 10
68 A11 In Address bus 11
69 A12 In Address bus 12
70 A13 In Address bus 13
71 A14 In Address bus 14
72 A15 In Address bus 15
73 A16 In Address bus 16
74 A17 In Address bus 17
75 A18 In Address bus 18
76 A19 In Address bus 19
77 A20 In Address bus 20
78 A21 In Address bus 21
79 A22 In Address bus 22
80 LCDC — LCD CS (NU)
81 A23 In Address bus 23
82 TRGI In Dot pulse control/drive signal
83 PTMG Out Printer timing signal
84 PRST Out Printer reset signal
85 INT4 In Interrupt signal (NU)
86 IPLON In To option connector
87 MD1 In Mode select input (+5V)
88 MD0 In Mode select input (GND)
89 TEST In +5V
90 MA15 — Image address 15 (NU)
91 MA18 — Nu
92 MA19 — Nu
93 RCVRDY1 — Nu
94 RCVRDY2 — Nu
95 RC0 — Remote control encord signal for CPU
96 IRTX — I/R output for LED
97 UASCK — I/R serial data shift clock
98 UARX — I/R serial data for CPU
99 UATX — I/R serial data from CPU
100 VCC — +5V
101 GND — GND
102 IRRX — I/R input from I/R unit
103 RCI — I/R input from I/R unit
104 DAX1 — System clock (7.3728MHz)
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