Panasonic Workio DP-C401, Service Handbook

Page: 274 / 548

3-200
Chapter 3 Troubleshooting
3. 5. 5 DC612 Test Pattern Print (PG) List
PG
No.
Pattern Name Overview Purpose PG Built-in Location
1 LSU (ROS)
Check Seal Glass Cleaning
Guide: 20 % Half
Tone Full Band Width
KCMRY Fast Scan
direction Stripe
Pattern
The engine where
defect has occurred
can be determined as
an output sheet
contains Seal Glass
smearing. -> To
determine defect
engine
IOT
2 Halftone (IOT) Seal Glass Cleaning
Guide: 20% Half
Tone Full Band Width
Full Half Tone. Select
the density from
Cin=0~100.
Defect can be
detected/evaluated
(steaks, uneven
density, banding)
IOT
3 Grid 1dot (For separating
troubles) 512 dot
Pitch Grid Pattern
with 1 dot width
- Around Alignment
and Color Regi
- Secondary Transfer
part magnification
failure IOT
4 Fast Scan 8
Gradation (For separating
troubles) Fast Scan
direction 8 Gradation
Pattern
For development.
For ASIC debug. IOT
5 A1 Patch Forms a bi-axial near
the IN and OUT edges
in full color.
(Chevron Pattern) At
normal Regi Control
cycle: Approx. half
cycle of IBT Belt (2
sheets of 8.5 x 11"
continuous) At Diag
Regi Control cycle:
Approx. 1 cycle of
IBT Belt (1: 4 sheets
of 8.5 x 11"
continuous)
For Color Regi
adjustment in Diag
DC685-1 (Skew Fine
Setup) and DC685-2
(In/Out Setup) during
JOB, at beginning of
JOB and end of JOB.
Also, for Color Regi
reading in DC681 and
DC684.
Controller
6 A2 Patch Forms a 1 axial near
CNT for approx. 1
cycle (1: 4 sheets of
8.5 x 11" continuous)
of IBT Belt in full
color. (Chevron
Pattern)
For Color Regi
adjustment in Diag
DC685-3 (Center
Setup)
Controller
7 B1 Patch Forms a bi-axial near
the IN and OUT edges
for approx. 1 cycle (1:
4 sheets of 8.5 x 11"
continuous) in full
color. ("<" pattern)
For Color Regi rough
adjustment in Diag
DC685-1 (Skew Fine
Setup) and 685-4
(Skew Rough Setup). Controller
8 B2 Patch Forms a 1 axial near
CNT for approx. 1
cycle (1: 4 sheets of
8.5 x 11" continuous)
of IBT Belt in full
color. ("<" pattern) For Color Regi
adjustment in Diag
DC685-3 (Center
Setup)
Controller
9 C Patch Forms a three-axle IN/
CNT/OUT in approx.
1 cycle (1: 4 sheets of
8.5 x 11" continuous)
of IBT Belt in single
color C. (Chevron
Pattern)
For Diag DC683 (to
check Sensor, Cyan
and position shift). Controller
PG
No.
Pattern Name Overview Purpose PG Built-in Location