RICOH A250 Repair Manual

SERVICE PROGRAM MODE17 May, 1999
Mode No.
ClassClassFunctionSettings
1 and 23
IPU/SBU Test PatternPrints test patterns from the IPU or SBU video data
outputs. (1 ~ 13: IPU, 14 ~ 16: SBU)
0. No Print
1. Vertical Line - 1 dot
2. Horizontal Line - 1 dot
3. Vertical Line - 2 dot
4. Horizontal Line - 2 dot
5. Alternating Dot Pattern
6. Grid Pattern - 1 dot
7. Vertical Bands
4-4178. Grayscale - Horizontal
9. Grayscale - Vertical
10. Patch Pattern
11. Cross Pattern
12. Slant Pattern
13. Trimming Area
14. Vertical Line - 2 dot
15. Grid Pattern - 2 dot
16. 16-grayscale
Change to the copy mode display by pressing the
/ (Interrupt) key, then print the test pattern.
Exposure Lamp ONTurns on the exposure lamp.0: No (Off)
4-902To turn off the exposure lamp1: Yes, sele c(tOn)
?0?.
SBU Gain Adjustment Checks the difference value of0 ~ the255
(EVEN)black level for the EVEN channe1/sltep
after adjusting the black leve40l at
power-up.
1*
Do not change the va.lue
However, after performing the
memory all clear (SP5-801), use it to
re-input the previous value.
SBU Gain Adjustment Checks the difference value of0 ~ the255
(ODD)black level for the ODD channe1/sl aftepter
adjusting the black level at po40 wer-
up.
2*
Do not change the value.
4-904
However, after performing the
memory all clear (SP5-801), use it to
re-input the previous value.
SBU Gain Adjustment Checks the difference value of0 ~ the255
(Adjusted EVEN)black level for the EVEN channe1/sltep
3after adjusting the black leve40l at SBU
Auto Adjustment (SP4-908).
Do not change the value.
SBU Gain Adjustment Checks the difference value of0 ~ the255
(Adjusted ODD)black level for the ODD channe1/sl aftepter
4adjusting the black level at S40BU Auto
Adjustment (SP4-908).
Do not change the value.
4-16