6 ] Machine Operation; 7 ] Adjustments, Setting - Sharp AL-841 Service Manual

AL-841
[6] MACHINE OPERATION
Machine condition
Scanning cannot be
performed. (OFFLINE)
Scanner operation
Scanning can be
performed. (ONLINE)
During scan/preview
[7] ADJUSTMENTS, SETTING
ADJ M9
Copy lamp light quantity adjustment
∗
Location value
Range (MIN)
Range (MAX)
Standard value
Default
∗
Program used
Test command (Simulation)
∗
Job content
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.
2) Execute simulation 63-1. (The copy lamp lights up in the scanner
unit home position.)
3 GREEN
ON
READY 7
LINE
LAMP SEGMENT
LAMP
LED
ON OFF —
ON ON —
OFF ON —
3.9 V
4.1 V
4.0 V
4.0 V
MODE Normal
MAIN CODE 63
SUB CODE 1
TONER
PRE-
JAM CERTRIDGE
HEAT
LAMP REPLACE-
LAMP
MENT LAMP
OFF OFF OFF
OFF OFF OFF
OFF OFF OFF
∗
Enforcement time
Enforcement JOB No
time
S 004/Ua
001/
P 002
Cycle
Condition
∗
Necessary condition
1) The scanner section must be clean.
JP2 (VIN) JP3 (SH)
JP1 (GND)
– 4 –
DRUM
CERTRIDGE Copy
NOTE
REPLACE- lamp
MENT LAMP
OFF ON
OFF ON
OFF ON
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.