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Pin No.
Pin Name
47
STM_OUT_1
92
STM_OUT_2
93
STM_OUT_3
48
STM_OUT_4
49
STM_OUT_5
50
STM_OUT_6
Signal connection at head control ports of printer-dedicated circuit (IC301)
Pin No.
Pin Name
118
nHED_STB
79
nHED_LATCH
33
HED_CLK
32
HED_D0
78
HED_D1
117
HED_D2
148
HED_D3
149
HED_D4
80
HED_D5
119
HED_D6
35
HED_D7
36
HED_D8
81
HED_D9
82
HED_D10
37
HED_D11
120
HED_D12
83
HED_D13
38
HED_D14
121
HED_D15
84
HED_D16
39
HED_D17
150
HED_D18
40
HED_D19
*2: For the specifications of a head, the data port number of is assigned from 1. Therefore, head data 0 on the IC side is connected to
head data 1 on the head side, and head data 19 on the IC side is connected to head data 20 on the head side.
OEP-4
Name
I/O
PM_OUT1
O
_
O
_
O
_
O
_
O
_
O
Name
I/O
nHED_STB
O
nHED_LATCH
O
HED_CLK
O
HED_D0
O
HED_D1
O
HED_D2
O
HED_D3
O
HED_D4
O
HED_D5
O
HED_D6
O
HED_D7
O
HED_D8
O
HED_D9
O
HED_D10
O
HED_D11
O
HED_D12
O
HED_D13
O
HED_D14
O
HED_D15
O
HED_D16
O
HED_D17
O
HED_D18
O
HED_D19
O
Description
Stepping motor control
Unused
Unused
Unused
Unused
Unused
Description
Head strobe
Head latch
Head clock
Head data 0
Head data 1
Head data 2
Head data 3
Head data 4
Head data 5
Head data 6
Head data 7
Head data 8
Head data 9
Head data 10
Head data 11
Head data 12
Head data 13
Head data 14
Head data 15
Head data 16
Head data 17
Head data 18
Head data 19
5-7
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Table of Contents
Troubleshooting
