Ecb Test Pattern - Ricoh G031 Service Manual

ECB TEST PATTERN

4.7 ECB TEST PATTERN
When the TB1 pins on the ECB board are shorted, the lattice test pattern is printed
out from the ECB board. This test pattern does not use the printer control board.
This test helps to find whether the problem is caused by the ECB or the printer
control board.
The location of TB1 is as shown below.
E C B
E n g i n e R O M
E E P R O M
G031M527.WMF
Procedure
1. Turn the printer on.
2. Short the TB1 pins.
3. The test pattern is automatically printed out.
G031/G032 4-24 SM