IBM 4247-V03, Информация по обслуживанию

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Attention: Allow the printhead to cool before taking resistance measurements.
To measure the resistance of the coil for print wire 1A, measure between pins 1 and 2 of the 22-pin cable connector.
18-Wire printhead resistance checks
22-Pin printhead connector 26-Pin printhead connector
Pin Name Pin Name Pin Name Pin Name
1 Wire 1A coil 2 Wire 1A coil 1 To encoder connector
pin 1 2 To encoder connector
pin 2
3 Column A shifter coil 4 Column B shifter coil 3 To encoder connector
pin 3 4 To encoder connector
pin 4
5 Wire 2A coil 6 Wire 2A coil 5 Thermal sensor ground 6 Thermal sensor
7 Wire 3A coil 8 Wire 3A coil 7 Wire 2B coil 8 Wire 2B coil
9 Wire 4A coil 10 Wire 4A coil 9 Wire 3B coil 10 Wire 3B coil
11 Wire 5A coil 12 Wire 5A coil 11 Wire 4B coil 12 Wire 4B coil
13 Wire 6A coil 14 Wire 6A coil 13 Wire 8B coil 14 Wire 8B coil
15 Wire 7A coil 16 Wire 7A coil 15 Wire 7B coil 16 Wire 7B coil
17 Wire 8A coil 18 Wire 8A coil 17 Wire 6B coil 18 Wire 6B coil
19 Wire 9A coil 20 Wire 9A coil 19 Wire 5B coil 20 Wire 5B coil
21 Wire 9B coil 22 Wire 9B coil 21 Wire 1B coil 22 Wire 1B coil
23 To ribbon lift connector
pin 2 24 To ribbon lift connector
pin 3
25 To ribbon lift connector
pin 1 26 To ribbon lift connector
pin 4
Chapter 3. Wiring diagrams
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