SHARP AL-841
Manual de Servicio

AL-841

[6] MACHINE OPERATION
Machine condition READY LAMP 3 GREEN ON 7 LINE SEGMENT LAMP LED OFF ON ON � � � PREHEAT LAMP OFF OFF OFF TONER DRUM JAM CERTRIDGE CERTRIDGE LAMP REPLACEREPLACEMENT LAMP MENT LAMP OFF OFF OFF OFF OFF OFF OFF OFF OFF Copy lamp NOTE

Scanner operation

Scanning cannot be performed. (OFFLINE) Scanning can be performed. (ONLINE) During scan/preview

ON ON OFF

ON ON ON

[7] ADJUSTMENTS, SETTING
ADJ M9 Copy lamp light quantity adjustment � Location value
Range (MIN) Range (MAX) Standard value Default 3.9 V 4.1 V 4.0 V 4.0 V MODE MAIN CODE SUB CODE Normal 63 1 Cycle Condition

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Enforcement time
JOB No S 004/Ua 001/ P 002 Content When replacing the scanner (copy) lamp control PWB When replacing the copy lamp In case of E7 (05) trouble In case of E7 (04) trouble In case of E7 (12) trouble In case of E7 (15) trouble � Normal copy exposure is not obtained.

Enforcement time

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Program used

Test command (Simulation)

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Job content

Necessary condition

1) The scanner section must be clean.

1) Put an oscilloscope between the check point JP2 (VIN) on the MCU (PCU) PWB and GND. At that time, trigger with the SH (JP3) signal to see the waveform correctly.
JP2 (VIN) JP3 (SH)

JP1 (GND)

2) Execute simulation 63-1. (The copy lamp lights up in the scanner unit home position.) �4�