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10 July 1992
1.
SERVICE PROGRAM MODE
1.1
MEMORY ALL CLEAR PROCEDURE (SP99)
CAUTION: Memory all clear mode (SP99) clears all the correction data
for process control and software counters, and returns all
the modes to the default settings. Normally, this mode
should not be performed.
This procedure is required only when the copier
malfunctions due to a damaged RAM or when replacing the
RAM board for any reason.
1. Access the SP mode through Access Procedure 3. (While pressing both
the Clear Modes and Clear/Stop keys on the operation panel, turn on the
main switch.)
2. Enter "99" and press the Enter key.
3. Enter "1" and press the Enter key.
4. Enter the factory-set values in the following SP modes:
40: Jogger span (Duplex machine only)
41: Lead edge erase
42: Registration
43: Vertical magnification
44: Horizontal magnification
45: Duplex magnification (Duplex machine only)
47: Focus adjustment
50: Lens error correction
62: Grid reference voltage
161: Grid volt/M-CH(P)
162: T-CH PWM
163: D-CH (AC) PWM
164: D-CH (DC) PWM
NOTE: There is an SP data table sheet underneath the front upper cover
which gives the above factory-set values.
5. Turn off the main switch.
6. Clean the used toner tank because the toner end counter has been
cleared.
SERVICE PROGRAM MODE
4-1
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