Sony UP-55MD Service Manual page 59

Signal connection at DC motor and stepping motor control ports of printer-dedicated circuit (IC301)
Pin No. Pin Name
1 DCM_OUT_0
2 DCM_OUT_1
94 DCM_OUT_2
51 DCM_OUT_3
130 DCM_OUT_4
95 DCM_OUT_5
52 DCM_OUT_6
131 DCM_OUT_7
46 STM_OUT_0
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.
UP-55MD
Name I/O
HM_OUT0 O
HM_OUT1 O
RBN_OUT0 O
RBN_OUT1 O
_ O
_ O
BUZZER O
_
O
PM_OUT0 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
Head motor control
Head motor control
Ribbon motor control
Ribbon motor control
Unused
Unused
Buzzer
Unused
Stepping motor control
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
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