Sanyo PLC-XP18N Service Manual page 25

ASS'YMA)N TRUTHTABLE
1. Check that the Vcc and Vbb voltages are correct.
VCC (Logic supply) Pin6 of IC5501 and IC5531
VBB (Load supply) Pin9. 16 of IC5501 and IC5531
2. Check that the FOCUS, ZOOM AV signal is correct.
Pini 19 of IC801 (From Top Control SW.)
3. Check that the POWER FAIL signal is correct.
PinI25ofIC801 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . H:Normaf
4. Check that the FOCUS. ZOOM A V signals are correct.
Pinl43 of IC801 (From remote-control unit.)
5. Check that the FOCUS and ZOOM on/off signal are correct.
Pmll.l3ofIC809.
6. Check that the FOCUS and ZOOM Phase signals are correct.
PinlO. 12ofIC809.
7. Check that the FOCUS and ZOOM on/off signals are correct.
PinL of IC5501 and IC5531.
8. Cheek that the FOCUS and ZOOM Phase signals are correct.
Pm7 of IC5501 and ICS531.
9. Check that the FOCUS Output signals are correct.
PinlO. 15 of IC5501 and Pini, 2ofK8G.
10. Check that the ZOOM Output signals are correct.
PinlO. 15 of IC5531 and Pin3, 4ofK8G.
ON/OFF Phase
H
H
L
H
L
-
H
L
L
L
H
L
OPERAT!ON
Forwtr<i(MVtFM) d^va
ReverM(f<Mward) ddve
Braking
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