Sharp SF-2050 Service Manual page 104

Main Sub
Item
code code
1 Developing bias
output
2 Main charger
output (ME/AE)
3 Main charger
output (Photo)
4 Main charger
output (Toner save)
6 Transfer charger
output
7 Separation charger
output
Contents
(SUK)
SIMULATION NO. 8
INPUT 1~7
1. DEVELOPING BIAS VOLTAGE TEST.
2. MAIN HIGE VOLTAGE UNUT TEST.
3. MAIN HIGE VOLTAGE UNUT TEST.
(PHOTO MODE)
4. MAIN HIGE VOLTAGE UNUT TEST.
(TSM)
5. (NO PROGRAM)
6. TRANSFER HIGE VOLTAGE UNUT TEST.
7. SEPARATION HIGE VOLTAGE UNUT TEST.
When the sub code is entered, the BIAS (developing bias)
output can be checked.
When the sub code is entered and the START key is pressed,
the current value (Vgd) is displayed on the copy quantity dis-
play. Press the START key to check the main charger output.
High voltage adjustment of the main charger (ME/AE) can be
made with formula (2). The output adjustment value (Vgd) is
about –251 to –950V for entering 161- 510 (with the 10-key
pad). One step : about 2V
Vg = –2.00 x Vgd + 71 ----- (2)
Vg : Actual output voltage
Vgd : Value
(The above formula shows the ideal curve (approximate
values), and differs from the actual high voltage output.)
When the sub code is entered and the START key is pressed,
the current value (Vgd) is displayed on the copy quantity dis-
play. Press the START key to check the main charger output.
High voltage adjustment of the main charger (ME/AE) can be
made with formula (2). The output adjustment value (Vgd) is
about –251 to –950V for entering 161- 510 (with the 10-key
pad). One step : about 2V
Vg = –2.00 x Vgd + 71 ----- (2)
Vg : Actual output voltage
Vgd : Value
(The above formula shows the ideal curve (approximate
values), and differs from the actual high voltage output.)
When the sub code is entered and the START key is pressed,
the current value (Vgd) is displayed on the copy quantity dis-
play. Press the START key to check the main charger output.
High voltage adjustment of the main charger (ME/AE) can be
made with formula (2). The output adjustment value (Vgd) is
about –251 to –950V for entering 161- 510 (with the 10-key
pad). One step: about 2V
Vg = –2.00 x Vgd + 71 ----- (2)
Vg : Actual output voltage
Vgd : Value
(The above formula shows the ideal curve (approximate
values), and differs from the actual high voltage output.)
Enter the sub code and press the START key twice to check
the transfer charger (TC) output.
Enter the sub code and press the START key twice to check
the separation charger (BC) output.
9 – 11
Adjustment value
Ref. page
Adjustment
Default
scope
–200 ± 5V
— P. 8 – 2
161 ∼ 510
385 P. 8 – 5
(Vgd) (Vgd)
(–730 ± 5V)
161 ∼ 510
265 P. 8 – 5
(Vgd) (Vgd)
(–450 ± 5V)
161 ∼ 510
330 P. 8 – 5
(Vgd) (Vgd)
(–625 ± 5V)
— — P. 8 – 4
+280 ± 20V
— P. 8 – 6