Canon iR2318 series, Service Manual, Page: 283 / 308

Chapter 14
14-11
14.9 Test
14.9.1 Outline
0022-9127
Test mode must be executed by keeping track the flow of menu items appearing on the LCD. Menu items in test mode are organized into seven blocks as described
below.
- DRAM test
Checks to see if data can be correctly written to and read from DRAM.
- Scanner test
Used to adjust contact sensor output and the position at which a document fed from the ADF is scanned.
- Printer test
Used to generate service test patterns.
- Aging test
Not used.
- Factory test
Used to verify the operations of microswitches, sensors, and ADF functions.
- Roller clear mode
Used to clean the delivery roller or ADF pickup roller by idling them.
- Video I/F Test
Not used.
14.9.2 DRAM Test
0022-5246
Read write installed DRAM.
When teest finishes and every thing is OK, it Will display 'OK' and automatically clear DRAM. After DRAM clears finish, LCD will display 'Data is Clear'.
14.9.3 Scanner Test
0022-5247
14.9.4 Printer Test
0022-5248
Select the item to generate test patterns as described below. Two kinds of service test patterns are available. Other test patterns are reserved for factory/development
purposes.
- White Pattern
Not used.
- Black Pattern
This pattern is used.
- Stripe Pattern
Not used.
- Endurance Pattern
This pattern is used.
- Black/White Pattern
Not used.
- CRG Test Pattern
Not used.
- Grid Pattern
Not used.
- White/Black Pattern
Not used.
- Arrow Pattern
Not used.
- E Pattern
Not used.
Item Explanation
CS Output Test Execute CS output compensation.
CS Position Test CS moves to ADF reading position.
Dirty Detect Shading area dirty detect.
Initial Read Adjust Reset all reading system adjustment value to initial. (ADF + Book)
Initial ADF Adjust Initial ADF scan adjust value.
Initial Book Adjust Initial Book scan adjust value.