MX-DEX8, MX-DEX9. Complete - Sharp Copying Equipment Service Manual (repair manual). Page 20

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MX-DEX8/DEX9  SELF-DIAGNOSIS AND TROUBLE CODES  8 – 1
MXDEX9
Service Manual
 
[8] SELF-DIAGNOSIS AND 
TROUBLE CODES
1. Simulations
A. Sensor Check
1) When you run SIM 4-2 using the keypad on the main unit, the
following screen appears and you can monitor changes in sen-
sor status. 
* When a sensor turns ON, the corresponding sensor name is
highlighted. 
* The [
↑] button can be used to move to the previous page.
This button is, however, enabled only when there is one or
more pages that precede the current page.  When there is
no page that precedes the current page, this button is dis-
abled and grayed out.  The [
↓] button can be used to move
to the next page. This button is, however, enabled only when
there is one or more pages that follow the current page.
When there is no page that follows the current page, this
button is disabled and grayed out. 
* You can exit from SIM mode by pressing the [CA] key. 
* You can return to the SUB number entry screen by pressing
the [SYSTEM SETTING] key. 
<Desk Sensors>
B. Load Operation Check
1)
Run SIM 4-3 using the keypad on the main unit.  The following
screen appears: 
2)
Select one or more loads you want to operate (in this example,
[DPFM]).  When you select the button that corresponds to a
load, the button is highlighted.  The button is unhighlighted
when you press it again. 
3)
Press the [EXECUTE] button to operate the selected load(s). 
While the load or loads are operating, the [EXECUTE] button
is highlighted. 
* Alternatively, you can press the [EXECUTE] button without
selecting any load; in this case, the [EXECUTE] button is
highlighted to indicate that you are in Execute mode.  When,
in this mode, you press the button that corresponds to a load
you want to operate, the load immediately starts operating. 
* While one or more loads are operating, you can stop the
operation or add another load. 
* Pressing the [EXECUTE] button stops the currently operat-
ing load(s); the [EXECUTE] button then becomes unhigh-
lighted. 
* You can return to the SUB number entry screen by pressing
the [SYSTEM SETTING] key. 
* You can exit from SIM mode by pressing the [CA] key. 
<Desk load items>
C. Synchronizing Signal Check
1)
Run SIM 4-5 using the keypad on the main unit. 
The following screen appears (initially, both DTRC and LTRC
are OFF): 
2)
Select [LTRC] and press the button. 
The system starts checking the "turn ON" behavior, and dis-
plays the result of the check (the indicator changes to "ON" if
normal, or remains "OFF" if abnormal). 
3)
Select [LTRC] (now highlighted) and press the button. 
The system starts checking the "turn OFF" behavior, and dis-
plays the result of the check (the indicator changes to "OFF" if
normal, or remains "ON" if abnormal). 
* You can exit from SIM mode by pressing the [CA] key. 
* You can return to the SUB number entry screen by pressing the
[SYSTEM SETTING] key. 
 Displayed name
 Sensor name
 DCSI1
 Desk 1 attachment sensor
 DPFD1
 Desk 1 transport sensor
 DLUD1
 Desk 1 upper limit sensor
 DPED1
 Desk 1 paper presence sensor
 DCSPD1
 Desk 1 paper level sensor
 DCSS11
 Desk 1 rear edge switch 1
 DCSS12
 Desk 1 rear edge switch 2
 DCSS13
 Desk 1 rear edge switch 3
 DCSS14
 Desk 1 rear edge switch 4
 DPWD11
 Desk 1 paper width sensor 1
 DPWD12
 Desk 1 paper width sensor 2
 DCSI2
 Desk 2 attachment sensor
 DPFD2
 Desk 2 transport sensor
 DLUD2
 Desk 2 upper limit sensor
 DPED2
 Desk 2 paper presence sensor
 DCSPD2
 Desk 2 paper level sensor
 DCSS21
 Desk 2 rear edge switch 1
 DCSS22
 Desk 2 rear edge switch 2
 DCSS23
 Desk 2 rear edge switch 3
 DCSS24
 Desk 2 rear edge switch 4
 DPWD21
 Desk 2 paper width sensor 1
 DPWD22
 Desk 2 paper width sensor 2
 DSW_DSK
 Right door open/close sensor
0
DESK/LCC SENSORCHECK
CLOSE
SIMULATION NO.04-02
TEST
1/2
DCSS21
DCSS22
DCSS23
DCSS24
DCS I1
DPFD1
DLUD1
DPED1
DCSPD1
DCSS11
DCSS12
DCSS13
DCSS14
DPWD11
DPWD12
DCSI2
DPFD2
DLUD2
DPED2
DCSPD2
 Displayed name
 Description
 DPFM
 Desk main motor
 DLUM1
 Desk 1 lift-up motor
 DPUC1
 Desk 1 paper feed clutch
 DLUM2
 Desk 2 lift-up motor
 DPUC2
 Desk 2 paper feed clutch
 DTRC
 Desk transport clutch
0
SIMULATION NO.04-03
TEST
DESK/LCC LOAD CHECK
EXECUTE
1/1
DPFM
DLUM1
DPUC1
DLUM2
DPUC2
DTRC
CLOSE
CLOSE
1/1
SIMULATION NO.04-05
TEST
DESK/LCC SYNCRONIZING SIGNAL CHECK
DTRC
LTRC
DTRC OFF
LTRC OFF
0
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