Star Micronics WinType 4000 Technical Manual page 124

TROUBLESHOOTING
2.4 E5
Step
1 (Initial Check)
Are any parts broken, malformed, incorrectly installed
or different from those listed in the specifications?
• Principle Parts to be Checked:
(1) MCU PWB, (2) HVPS assembly
(3) Interlock access pin
2 (Check the interlock access pin.)
Does the interlock access pin push in the interlock
switch in the HVPS assembly when the front cover
assembly is closed, and does it release the interlock
switch when the front cover assembly is opened?
(Check by listening for the click sound.)
3 (Check the interlock access switch in the HVPS
assembly.)
Is the interlock access switch functioning properly?
• Check using diagnosis code 02.
Check
– 120 –
Remedy
YES
Replace the part or
install the part
correctly.
See step 3.
Replace the MCU
PWB.
NO
See step 2.
Replace the front
cover or the HVPS
assembly.
See section 3.2
Faulty HVPS
Assembly 24VDC.