MX-2310U, MX-3111U (serv.man87). CCE 1375 CONFIRMATION OF DRIVER PWB AT THE TIME OF C1-14 TROUBLE - Sharp Copying Equipment Technical Bulletin (repair manual)

mx-2310u, mx-3111u (serv.man87) technical bulletin
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MX-2310U MX-3111U (serv.man87)
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Technical Bulletin
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Copying Equipment / CCE 1375 CONFIRMATION OF DRIVER PWB AT THE TIME OF C1-14 TROUBLE
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mx-2310u-mx-3111u-sm87.pdf
Date

Read Sharp MX-2310U / MX-3111U (serv.man87) Technical Bulletin online

 
Sharp Electronics (UK) Ltd., Document Systems Support
 
 
 
 
 
1/2 
 
Date:  
 
3
rd
    Oct 2014 
Model:   
 
See below 
Ref.:   
 
CCE1375 
Colour:   
 
White 
Page: 
 
1 of 2 
TECHNICAL BULLETIN 
CONFIRMATION OF DRIVER PWB AT THE 
TIME OF “C1-14” TROUBLE 
 
1. Model Name: 
MX-1810U/2010U/2310U/3111U, MX-2610N/3110N/3610N,   
 
 
MX-2314N/2614N/3114N/2615N/3115N/2616N/3116N, MX-2640N/3140N/3640N 
 
2. Symptom: 
Due to the unevenness of the allowance of capacitor (C301) of MC PWB at the   
 
 
high-voltage/power supply section, the capacitor (C57) of driver PWB at the delivery drive   
 
 
unit section, and the resistance (R64), “C1-14” trouble may occur on rare occasion.   
 
3. Cause: 
Due to the unevenness of the allowance of the capacitors above and the resistance,   
 
 
IC6 of the driver PWB may short circuit between the input-output, as a result the input   
 
 
current to the MC PWB will not be able to be controlled.   
 
 
This may result in the blowout of the fuse (IP301) on MC PWB.   
 
 
The Power Supply to MC PWB is supplied via IC6 of the driver PWB.   
 
 
Since the power supply of the MC PWB is configured to supply large current   
 
 
instantaneously, IC6 of the driver PWB is being used to gradually supply the current to   
 
 
the MC PWB.   
 
4. Isolation of factor 
Before Replacing the MC PWB confirm one of the factors causing C1-14 trouble.   
 
 
Please check if a short circuit exists between both poles of D4 on the driver PWB using a   
 
 
tester. 
 
 
<Reason to check D4 side is because the tester check of IC6 is difficult.> 
 
 
If a short circuit exists between both poles of the driver PWB, IC6 located in parallel   
 
 
may be short circuited (damaged). 
 
 
 
 
 
 
 
If IC6 is short circuited (damaged), please replace the driver PWB and MC PWB at the   
 
 
same time. (For the parts code, see below.) 
 
 
If IC6 is not short circuited (damaged), it is not the cause of C1-14 and does not need to   
 
 
be replaced. 
 
Sharp Electronics (UK) Ltd., Document Systems Support
 
 
 
 
2/2 
 
 
Replacement parts code 
 
    [Driver PWB] 
 
        CPWBX1963FCE3 (Common use with all target models) 
 
    [MC PWB] 
Target model 
Parts code 
  MX-1810U/2010U/2310U 
RDENU0130FCP1 
  MX-2610N/3110N/3111U 
RDENU0131FCPZ 
  MX-3610N 
RDENU0132FCP1 
  MX-2314N/2614N/3114N 
  MX-2615N/3115N/2616N/3116N 
  MX-2640N/3140N/3640N 
RDENU0153FCP1 
 
 
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