Canon iPF6100 Service Manual page 591

When the difference between "Media edge (diffuse reflection) external light output" and "Media edge (diffuse reflection) platen output" is 500 or more, the effect
of diffuse light is judged as being great.
When the effect is normal, the difference is about 50-300.
[Check 4]
Check whether the media is compatible.
When the result of "Media edge (regular reflection) gain" is five times as large as the result of "Media edge (diffuse reflection) gain", the media is judged as being
incompatible with the multi sensor.
If the media is compatible, the result is about 0.5 to 1.5 times for plain/glossy paper; about 1-3 times for tracing paper.
[Check 5]
Check whether the media is compatible.
When the result of "Media edge (diffuse reflection) gain" is in one of the following, the media may be incompatible with the multi sensor.
- Nine or more times as large as that of plain paper
- Ten or more times as large as that of glossy paper
- Three or more times as large as that of tracing paper
2. Checking "OUTPUT 0" when clear film is fed
[Check 1]
Check whether the multi sensor performance has degraded or whether the media is compatible.
When the "Media edge (regular reflection) gain" is maximum values and "Media edge (regular reflection) media output" is 186 or less, an error occurs.
Maximum value of "media edge (regular reflection)" gain: 255
When the multi sensor and media are normal, the following values are displayed:
[Check 2]
Check whether the multi sensor performance has degraded or whether the media is compatible.
When the difference between "Media edge (regular reflection) gain" and "Media edge (regular reflection) platen output" is 100 or less, an error occurs.
When the multi sensor and media are normal, the difference is about 250-500.
[Check 3]
Check the effect of external diffuse light.
When the difference between "Media edge (regular reflection) external light output" and "Media edge (regular reflection) platen output" is 500 or more, the effect
of diffuse light is judged as being great.
When the effect is normal, the difference is about 50-300.
3. Checking "OUTPUT 2/OUTPUT 3" and "OUTPUT 4/OUTPUT 5"
[Check 1]
Check whether the multi sensor performance has degraded or whether the media is compatible.
When "GAP gain" is maximum values and "GAP media output" is 93 or less, an error occurs.
Maximum value of "GAP gain": 255
When the multi sensor and media are normal, "GAP gain" is about 30-250.
[Check 2]
Check whether the multi sensor performance has degraded or whether the media is compatible.
When "LED gain" is maximum values and "LED media output" is 168 or less, an error occurs.
Maximum value of "LED gain": 255
When the multi sensor performance and media are normal, "LED gain" is about 5-100.
9) NOZZLE CHK
Checks for non-discharging nozzle with head management sensor.
10) NOZZLE INF
Displays the result of non-discharging nozzle check performed with "NOZZLE CHECK" by nozzle row of each ink color.
- Press the key or key to switch the ink color.
- AE:A-EVEN row, AO:A-ODD row, BE:B-EVEN row, BO:B-ODD row
11) MEMORY CHK
Media edge (regular
reflection) gain
Clear film About 10-60
C A E : O K
B E : O K
Display
DDR Checks the DDR-SDRAM mounted on the Main Controller PCB.
EEP Checks the EEPROM.
T-7-155
Media edge (regular
reflection) media output
About 500-600
A O : O K
B O : O K
F-7-35
T-7-156
Description
Chapter 7
7-81