Service manual

4-10 QMS 3260/4032 Laser Printer - Base Engine Technical Manual
Release Version 11-97
Primary Fault Isolation Procedures
4.5 Inoperative Paper Feed Drive
Paper feed drive does not work. The problem is not identified by a displayed Error Code.
Step Actions and Questions Yes No
SUSPECT COMPONENTS
The followin
g
components are associated with this specific
problem. One or more of these components ma
y
have failed
partiall
y
or completel
y
. If
y
ou cannot isolate the problem usin
g
this FIP, replace each component listed below, one at a time,
until the problem disappears.
• LVPS Assembly (RRP 9.2)
• All paper path sensors (refer to the Parts List)
• wiring and connectors linking the components
1
MAIN DRIVE ASSEMBLY TEST
1. Remove all of the paper trays from the printer.
2. Use Diagnostic Mode - Output Test 8-1 to check the Main
Motor and Main Drive Assembly.
Does the Main Motor run and do the gears of the Drive
Assembly rotate normally?
Go to step 2 Go to FIP 4.4
Inoperative
Main Drive
Assembly
2
Is the problem with MSI feed?
Go to step 4 Go to step 3
3
TRAY 1 FEED CLUTCH TEST
While the Main Motor is running under 8-1, run Output Test 8-
12 to actuate Tray 1 Feed Clutch.
Does the Feed Clutch actuate and do the Feed Rolls
rotate?
Go to step 5 Replace the
Tray 1 Feed
Clutch (RRP
2.2)
4
MSI FEED CLUTCH TEST
While the Main Motor is running under 8-1, run Output Test 8-
12 to actuate Tray 1 Feed Clutch.
Does the MSI Feed Clutch actuate and do the MSI Feed
Rolls rotate?
Go to step 5 Replace the
MSI Feed
Clutch
(
RRP
3.5
)
5
TEST PRINT STRESS TEST
1. Generate 100 to 200 Grid Test Patterns.
2. Carefully observe the Main Drive Assembly and Feed
Clutches as the test runs.
Does the test suddenly stop; without any visible paper jam
and without any Error Code displayed?
Go to step 6 Treat as an
intermittent