Printronix P4280 Maintenance Manual page 14

Electrical Controls and Indicators (Figure 1–2)
NOTE:
Status lamps
Message display
1–6
Switch or
Indicator
Only the ON LINE switch operates when the printer is on–line.
All other switches operate only in the off–line state.
/O = On O = Off Turns printer on and off. Switch is
also a circuit breaker.
Illuminate when printer is on–line. Flash alternate-
ly to indicate fault. Off when printer is off–line.
Displays printer status and error messages.
ON LINE Toggles the printer on–line and off–line.
FF Advances paper to top of form on next page.
Advances paper to top of next print line.
LF
VIEW Advances paper for viewing through cover win-
dow, then returns paper to print position.
Locks and unlocks ENTER switch when pressed
UP
simultaneously with DOWN switch. Also causes
display of configuration menus, submenus, and
diagnostic tests.
DOWN See above.
PREV Displays previous parameter in a configuration or
diagnostic test menu.
NEXT Displays next parameter in a configuration or
diagnostic test menu.
CLEAR Clears printer after a fault is corrected. Returns
printer to off–line state from within a configura-
tion menu. Resets printer when pressed simulta-
neously with R/S switch.
R/S Runs and stops configuration and self tests. Runs
and stops hex dump. Resets printer when pressed
simultaneously with CLEAR switch.
Sets location of first line of print on a page.
SET TOF
ENTER Enters displayed parameter into printer nonvola-
tile memory. Must be unlocked before using.
Function
Maintenance Overview