Rp/Hp Waveform Check - Sharp UP-600 Service Manual
Sharp up-600 cash register service manual
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Also See for UP-600:
- Instruction manual (230 pages) ,
- Service manual (83 pages) ,
- Programming manual (51 pages)
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3-4-4 RP/HP Waveform Check
(1) Procedure
Perform bi-directional printing and use an
oscilloscope to measure the phase shift A between
the reset pulse (RP) waveform and home position
pulse (HP) waveform.
OFF
ON
RP
HP
DP
(2) Check points
RP waveform: Connector pin 26
HP waveform: Connector pin 6
GND:
Connector pin 24
(3) Adjustment
Verify that the value of A is between 3 and 8 ms.
OFF
A
OFF
ON
25
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