Epson LQ-570+ Servicehandleiding - Pagina 33

Blader online of download pdf Servicehandleiding voor {categorie_naam} Epson LQ-570+. Epson LQ-570+ 49 pagina's. Sdx acd manager 5.2 printer setup
Ook voor Epson LQ-570+: Product ondersteunings bulletin (20 pagina's), Product ondersteunings bulletin (5 pagina's), Handleiding productinformatie (8 pagina's), Installatiehandleiding (1 pagina's), Handmatig (12 pagina's), Specificaties (2 pagina's), Handmatig (8 pagina's), Product ondersteunings bulletin (16 pagina's), Installatiehandleiding (14 pagina's)

REV.-A

4.3 CIRCUIT ADJUSTMENT

The C107

board contains variable resistor VR1, which is used for balancing the circuitry. When any of the

MAIN

following parts are replaced, the circuitry must be balanced by adjusting the VR1.

R6, R7, TL431(IC1), and VR1

If the circuitry is not properly adjusted, the CPU A/D converter functions abnormally and causes irregular operation

of the printer.

4.3.1 Adjustment Process

Attach a digital multimeter to the check terminal TP1 (Vref voltage) on the C107 MAIN board. Turn the printer On

and adjust the variable resistor VR1 until a reading of 4.741 V is obtained.

4-6