Diagnostic Aids 3-27
4023-001
Note: Before starting test mode:
• Ensure that the storage unit is connected to the printer with the
storage unit cable (12 pins). This provides power to the storage
unit.
• Ensure that the storage unit is connected to the printer with the
horizontal transport unit cable (28 pins). This provides signal
transfer between the printer and the storage unit.
Starting Test Mode
The starting method varies according to how power is turned ON. If
the printer has not been powered ON, turn ON the power switch on
the printer while holding down S1 on the main board (PWB-A). If the
printer has already been powered ON, press S3 for an instant while
holding down S1 on the main board (PWB-A).
Exiting Test Mode
Press S3.
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