Oki ML421 Maintenance Manual - Page 100
Connection Circuit Check for Printhead and SP/LF Motor
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Oki Data CONFIDENTIAL 6.4 Connection Circuit Check for Printhead and SP/LF Motor (1) Printhead Signal HEAD1 HEAD2 HEAD4 HEAD6 HEAD8 0V HTEMP +50V +50V +50V HEAD9 HEAD7 HEAD5 HEAD3 NC Connector pin number CN1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 #1 #2 #4 #6 #8 Thermistor (5KΩ at 25°C) #9 #7 #5 #3 42113901 Rev.2 100 /
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42113901
Rev.2
100 /
Oki
Data
CONFIDENTIAL
6.4
Connection Circuit Check for Printhead and SP/LF Motor
(1)
Printhead
Signal
Connector pin number
CN1
1
#1
2
#2
3
#4
4
#6
5
#8
6
7
8
9
10
11
#9
12
#7
13
#5
14
#3
15
Thermistor
(5K
Ω
at 25
°
C)
HEAD1
HEAD2
HEAD4
HEAD6
HEAD8
0V
HTEMP
+50V
+50V
+50V
HEAD9
HEAD7
HEAD5
HEAD3
NC