Image problems

127

Media-handling problems

128

Performance problems

130

Functional checks

131

Engine test page

131

Drum rotation test

131

Half self-test functional check

132

Perform a half self-test check

132

Perform other checks

132

Heating element check

133

High-voltage contacts check

133

Check the print-cartridge contacts

133

Check the high-voltage connector assembly

134

Service-mode functions

135

NVRAM initialization

135

Super NVRAM initialization

135

Secondary service menu

135

Problem-solving tools

137

Product information pages and reports

137

Configuration page

137

Demo page

137

Menu map

137

Service menu

138

Restore the factory-set defaults

138

Clean the paper path

138

Archive print

138

Problem-solving diagrams

140

Repetitive image defects

140

Interface ports

141

Formatter connectors

142

ECU connectors

143

Solenoid and motor

144

Rollers

145

Sensors

146

Major components

147

PCAs (base unit)

148

Circuit diagram

149

Firmware updates

150

7 Parts

 

Ordering information

152

Supplies and hinge tool

152

Cable and interface accessories

152

Whole-unit replacement

153

Control-panel overlays

157

Supplementry documentation and support

160

Parts lists and diagrams

162

Types of screws

163

Scanner assemblies

164

Assemblies

166

vi

ENWW

Page 8
Image 8
HP LasetJet M1120 manual Parts