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Test 4A - Cartridge Error

  1. Disconnect and reconnect DRB. DO NOT  touch keypad. If DRB does not display CARTRIDGE ERROR, proceed to next step. If DRB displays CARTRIDGE ERROR, replace DRB cartridge. Perform TEST VER-1  . Return to TEST 1A - TROUBLE CODES  .
  2. If DRB displays KEY PAD TEST FAILURE, replace DRB. Perform TEST VER-1  . If DRB does not display KEY PAD TEST FAILURE, return to TEST 1A - TROUBLE CODES.
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