InfoPrint 4247 Z03 Maintenance Information page 51

Table 6. MAP 0150: Power supply (continued)
Questions/Actions
5. a. Turn off the printer.
b. Connect 1 of the disconnected Engine board loads.
c. Turn on the printer and observe the operator panel
display
If the operator panel display works and remains on after
approximately 1 minute, the just connected load is not
the problem.
d. Repeat steps 1, 2, and 3 (connecting the following, one
at a time) until the failing load is found.
v Printhead ribbon cables
v Sensor cable
v Tractor cable asm.
v AFTA motor
v Paper feed motor
v Carriage motor
v Ribbon motor
e. After all Engine board loads have been connected,
connect the power supply fan and the carriage motor fan
to P1 and P2 on the power supply board.
Does the operator panel display work after each load is
connected?
a. Turn off the printer.
6.
b. Connect the carriage and board fans to the power
supply.
c. Turn on the printer.
Does the carriage fan turn on after about 1 minute?
Yes
No problem found.
Go to step 7.
No
Replace the faulty load FRU.
Install a new Controller Board
- or -
Engine board
- or -
Back Panel board.
Chapter 1. Diagnosing problems
51