Epson AcuLaser C8500, Service Manual

Page: 298 / 570

EPSON AcuLaser C8500 Revision C
Chapter 4 Diagnostics 4-30
4.2.5.6 Digital Output Test
This lets you turn ON/OFF each component that is operated by a
digitalÅ` signal.
Table 4-9. Digital Output Test
NOTE: To prevent electrification exhaustion, never execute [BCR] ON,
[ERASE LAMP ASSY] ON, and [ROS ASSY LD] ON when
[PROCESS DRIVE ASSY] is OFF.
NOTE: To prevent the CLEANING BLADE from reversing on itself,
never set the [PROCESS DRIVE ASSY] to ON immediately after
replacing the DRUM CARTRIDGE with a new one.
NOTE: With [PROCESS DRIVE ASSY] ON, [FUSER-P/H MOTOR] ON,
[DEVE. CLUTCH ASSY] ON, and at each color development
position, never turn only [DB output (AC component)] ON or turn
both [DB output (AC component)] and [DB output (DC
component)] ON.
NOTE: Never turn ON for 10 seconds or more the [DISPENSE MOTOR
ASSY] with [FUSER-P/H MOTOR] ON at each color's
development position. Otherwise a toner jam or gear damage
may occur.
NOTE: Never set the 2ND GTR to [Advance] with [PROCESS DRIVE
ASSY] OFF and [FUSER-P/H MOTOR] ON. Otherwise the IBT
BELT ASSY may be scratched.
NOTE: Never turn ON the [PROCESS DRIVE ASSY] with the 2ND GTR
set to [Advance]. Otherwise the IBT BELT ASSY may be
scratched.
DIAGON command: [75] DIAGOFF command: [76]
DIAGSTART Command (Digital Output Test) : [90 02 XX]
DIAGSTOP Command(Digital Output Test) : [91 02 XX]
Parameter Function Data (hex)
1 Diagnostics Type 02 : Digital Output Test
2 Code_DO Device code (See the next section [2.5.7].)
3 DGST [Status only] 06 : Pass , 07 : Fail
Status present ( [90 02 XX], [91 02 XX XX] )
EX) [Command]
91 01 1E
EX) [Status]
90 01 0E 07
DIAGSTART Command
REGIST_CL
Digital Output Test
DIAGSTART Command
Digital Output Test
REGIST_CL
Fail (06: Pass)
W A R N I N G
„
During high voltage output, never touch parts with
high voltage output or energized with high voltage.
„
When the laser is operating, never touch the drive
section.
„
During laser beam output, all the covers must be
installed.