Test Print Mode; Functions; Test Print Operating Method - Star Micronics LS-5 SERIES Technical Manual

MAINTENANCE GUIDE
2.

Test Print Mode

2-1. Functions

This mode enables the printer built-in test print (self-pattern print) to print at maximum speed.
Printing in the test print mode makes it possible to identify whether it is caused by the main logic board or by the engine
when a failure occurs.
• Printing in the test print mode is normal → A defect exists in the main logic board.
• Printing in the test print mode is also abnormal → A defect exists in the engine.
Test print self-patterns are as follows:
Paper transport
Approx.4mm
Approx.4mm
128dot
128dot
1dot 1dot
Approx.4mm

2-2. Test Print Operating Method

(1) Open the rear cover according to the procedure described in section 1-1 of chapter 3.
(2) Turn ON the power switch.
(3) When the printer enters the standby state, insert a mini-screwdriver into the elec. box cover hole to short the two
pins of the J32 on the main logic board.
(4) Shorting these two pins causes test print to start.
(Paper)
1dot
1dot
1dot
Approx.4mm
1dot
A 1-dot black line is printed for each 128 dots.
The areas where the broken lines pass (blocks at
the right end and bottom of the paper) are not
necessarily square.
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