Service manual

iv
SP2-XXX (Drum).................................................................................5-13
SP3-XXX (Process) ............................................................................5-23
SP5-XXX (Mode) ................................................................................5-30
SP6-XXX (Peripherals) .......................................................................5-38
SP7-XXX (Data Log)...........................................................................5-39
5.3.2 INPUT CHECK TABLE...................................................................5-47
Table 1: Paper Height Sensor.............................................................5-49
Table 2: Paper Size Switch (Tray 2) ...................................................5-49
Table 3: Paper Size (By-pass Table) ..................................................5-49
5.3.3 OUTPUT CHECK TABLE...............................................................5-50
5.3.4 TEST PATTERN (SP5-997) ...........................................................5-54
5.4 FIRMWARE UPDATE PROCEDURE......................................................5-55
5.4.1 TYPE OF FIRMWARE....................................................................5-55
5.4.2 ERROR RECOVERY......................................................................5-55
Engine Firmware/Controller NIB Firmware .........................................5-55
Controller System Firmware: ..............................................................5-55
5.4.3 CONTROLLER/ENGINE FIRMWARE UPGRADE .........................5-56
5.5 CONTROLLER SELF-DIAGNOSTICS ....................................................5-57
5.5.1 OVERVIEW ....................................................................................5-57
5.5.2 DETAILED SELF-DIAGNOSTICS ..................................................5-58
5.6 USER PROGRAM MODE .......................................................................5-59
5.7 DIP SWITCHES.......................................................................................5-60
Controller Board..................................................................................5-60
6 DETAILED SECTION DESCRIPTIONS ....................................... 6-1
6.1 OVERVIEW ...............................................................................................6-1
6.1.1 COMPONENT LAYOUT...................................................................6-1
6.1.2 PAPER PATH...................................................................................6-2
6.1.3 DRIVE LAYOUT ...............................................................................6-3
6.1.4 BOARD STRUCTURE......................................................................6-4
Overview...............................................................................................6-4
Descriptions..........................................................................................6-5
6.1.5 PRINTING PROCESS......................................................................6-6
6.2 PROCESS CONTROL ..............................................................................6-8
6.2.1 OVERVIEW ......................................................................................6-8
6.2.2 POTENTIAL CONTROL ...................................................................6-8
Overview...............................................................................................6-8
Process Control Self Check..................................................................6-9
6.2.3 PROCESS CONTROL SELF CHECK PROCEDURE ....................6-10
Step 1: V
SG
Adjustment......................................................................6-10
Step 2: ID Sensor Solid Pattern Generation .......................................6-11
Step 3: Sensor Pattern Detection .......................................................6-11
Step 4: Toner Amount Calculation ......................................................6-11
Step 5: V
D
, V
B
, V
L
Selection and V
REF
Adjustment............................6-11
Step 6: ID Sensor Highlight Pattern Generation .................................6-12
Step 7: Sensor Pattern Density Detection...........................................6-12
Step 8: V
L
(LD Power) Selection.........................................................6-13
6.2.4 TONER SUPPLY CONTROL .........................................................6-14
Overview.............................................................................................6-14