Test Print - Brother HL-4200CN Service Manual

*Electronic billing meter (count) function and backup
The monochrome and color meters have backup meters.
The printer compares the main and backup meters when the power is turned ON.
If there is a discrepancy between the main and backup meters, the hardware of both
meters is diagnosed by read/write tests.
1. If either or both meters are abnormal, a fatal error (C/E call) is assumed.
The C/E replaces ESS-PWBA HBN DRV.
2. If both diagnostic results are correct, the main meter is believed.
The main meter is copied to the backup meter for matching.
Then the mismatching is counted as an abnormality recovered automatically as a
non-critical error.
4.10

Test Print

Function: Printing an internal test pattern of the printer
Operation procedure:
1. Enter the Diag. (C/E) mode.
2. Select [CE Maintenance Test Print] with the
3. Press the Form Feed/Set button to advance to diagnostic item selection in [CE
Maintenance Cyan 20% [ESS] Test Print].
4. Select a test print pattern with the
(For the test print patterns, refer to the table below.)
5. Press the Form Feed/Set button to determine the test print pattern.
6. Press the Form Feed/Set button again to execute test printing.
(The LCD panel displays [Processing].)
7. After outputting the test print, the printer becomes Ready to Print state.
(The LCD panel displays [Ready].)
Test print patterns
Item
No Image [IOT]
Test Patt 600 [IOT]
Grid2 [ESS]
Cyan 20% [ESS]
Magenta20% [ESS]
Yellow 20% [ESS]
Black 20% [ESS]
CMY 20% [ESS]
Gradation [ESS]
NIP adjust [ESS]
P REGI Adj Chart
ESS PWB
U8
U9
Fig.5-7
and
Feeds and outputs paper with no image.
Outputs an IOT internal 600-dpi pattern.
Outputs an ESS internal grid pattern.
Outputs a solid pattern of 20% cyan.
Outputs a solid pattern of 20% magenta.
Outputs a solid pattern of 20% yellow.
Outputs a solid pattern of 20% black.
Outputs a solid pattern of 20% C.M.Y each.
Outputs 100% to 2% gradation patterns in four colors.
Outputs the NIP adjustment pattern.
Outputs the Paper feed registration correction chart.
V-54
and buttons.
buttons.
Description