Printronix L5535, Maintenance Manual

Page: 323 / 358

II–323
Disconnecting The Engine Checker
CAUTION
Be sure printer power is off before disconnecting the engine checker
from the printer.
Use the following procedure to disconnect the engine checker from the
printer:
1. Turn off the printer power.
2. Refer to Figure II–46 on page II–322 and set MC board rotary switch SW1
to the “Normal Operating Position,” position 0.
3. Disconnect the engine checker harness connectors from MC board
connectors CN2 and CN7.
4. Refer to Figure II–45 on page II–321 and reconnect the ribbon cables
inside the printer to MC board connectors CN2 and CN7.
5. If necessary, replace the printer covers and the access panel on the left
rear printer cover.
Using The Control Panel
The engine checker control panel is equipped with a message display,
indicators and keys, as shown in Figure II–47.
Figure II–47. Engine Checker Control Panel
Indicators
•
Ready indicator — Lights to indicate that the engine checker is ready to
operate.
•
High-level indicator (green) — Lights when I/O signals are at a high level.
•
Low-level indicator (red) — Lights when I/O signals are at a low level.
BASIC MENU
DEVICE CHECK, VOLUME
START STOP
BS
ENTER
0 1
2 3
4
5
6
7
8 9
Ready Indicator High-Level Indicator Low-Level Indicator