Olivetti ECR 8220, Руководство по обслуживанию

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3-10. DRAWER CIRCUIT
The solenoid for a drawer is activated using the signal P110 from the CPU.
This signal is normally Low, and goes High to cause the drawer to run. When P110 is High, Q2 is on.
Current flow through the transistor cause the collector to be held Low, near grand potential.
DRW_ON
R105
4.7K
VDRW
R108
10K
PG
DRW_ON
B
E
C
Q2
2SD986
K
D1
1SR154-400
A
C
56
*0
.1uF
_
50V
C
57
*0
.1uF
_
50V
PG
1
2
3
CN5
B3P-SHF-1AA
(1)
Trouble shooting
- Drawer remains opened. (Drawer does not close.)
Check the voltage at point (1).
DC +3.3V - - - Replace Main board.
0V - - - Replace the Drawer unit.
- Drawer remains closed. (Drawer does not open)
Check whether or not the drawer opens by emergency lever.
If drawer opens - - - It should not be considered a mechanic problem.
Check the voltage at point (1)
If drawer does not open - - - It should be considered a mechanic problem.
Replace the drawer unit.
Service Manual 48