Konica Minolta bizhub PRO 1050 Service Manual page 367

Field Service Ver3.0 Nov.2006
6. Select A3 or 11 x 17 paper. Press the Start but-
ton to output the test pattern (No.16).
7.
When the trouble is not solved, press the
[SERVICE] key.
8.
"Printer pre-regist adj. screen"
Enter a numeric value through the numeric keys
and press the [Set] key.
• Setting range:-10 (small) to +10 (large)
1 step = 1ms
9. Repeat the steps 5 to 8 until an appropriate
value is obtained.
E. Printer lead edge timing adjustment
Adjust the image erasure amount of the leading edge.
Info HJG: Löschbereich am Bildanfang
(1) Procedure
1.
Enter the service mode.
2.
"Service mode menu screen"
Press the [01 Machine Adjustment] key.
3.
A sub menu appears on the right side of the
screen.
Press the [03 Timing Adjustment] key on the
sub menu.
4.
"Timing adjustment menu screen"
Press the [05 Printer Lead Edge Timing Adjust-
ment] key.
5.
"Printer lead edge timing adjustment screen"
Press the [COPY] key.
6.
Select A3 or 11 x 17 paper. Press the Start but-
ton to output the test pattern (No.16).
7. Check the printer lead edge timing.
• Standard value:within 4 mm
8.
When the value is not within the standard value,
press the [SERVICE] key.
9.
"Printer lead edge timing adjustment screen"
Enter a numeric value through the numeric keys
and press the [Set] key.
• Setting range:-20 (small) to +40 (large)
1 step = 0.1 mm
10. Repeat steps 5 to 9 until the standard value
can be obtained.
F. Transfer assist timing adjustment
Adjust the pressure/release timing and the pressure
amount of the transfer assist sheet when transfer
error (such as missing image portions) occurs.
Preparation:
• Select the appropriate paper setting beforehand
so that the transfer assist sheet (50 to 91 g/m2)
can be fed through.
NOTE
• Perform "Transfer Assist Pressure Level adj."
properly, or the photoconductor may get
damaged.
• Only perform this adjustment when the trans-
fer error still occurs after performing "Trans-
fer Assist Push Position adjustment" and
"Transfer Assist Release Position adj."
• Always perform "Transfer Assist Push Posi-
tion adjustment" and
Release Position adj."
"Transfer Assist Pressure Level adj."
(1) Procedure
1.
Enter the service mode.
2.
"Service mode menu screen"
Press the [01 Machine Adjustment] key.
3.
A sub menu appears on the right side of the
screen.
Press the [03 Timing Adjustment] key on the
sub menu.
4. "Timing adjustment menu screen"
Press the [06 Transfer Assistance Timing
Adjustment] key.
Press the [NEXT] or the [Back] key to select the
item to be adjusted, and press [COPY].
5.
"COPY screen"
Change the print mode to [1 - 2], and select the
tray in which the transfer assist sheet is loaded.
6. Press [START] to print the test pattern (No. 16).
Print a halftone image or the original as neces-
sary.
7.
If the transfer error still occurs, press the
[SERVICE] key.
10. SERVICE MODE
"Transfer Assist
after performing
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