MX-M264N, MX-M264NR, MX-M264NV, MX-M264U, MX-M314N, MX-M314NR, MX-M314NV, MX-M314U, MX-M354N, MX-M354NR, MX-M354U (serv.man68). COUNTERMEASURE FOR NO POWER DUE TO DC POWER SUPPLY PWB TROUBLE. — Sharp Copying Equipment Technical Bulletin (repair manual)

Model
MX-M264N MX-M264NR MX-M264NV MX-M264U MX-M314N MX-M314NR MX-M314NV MX-M314U MX-M354N MX-M354NR MX-M354U (serv.man68)
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Technical Bulletin
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Device
Copying Equipment / COUNTERMEASURE FOR NO POWER DUE TO DC POWER SUPPLY PWB TROUBLE.
File
mx-m264n-mx-m264nr-mx-m264nv-mx-m264u-mx-m314n-mx-.pdf
Date

View Sharp MX-M264N / MX-M264NR / MX-M264NV / MX-M264U / MX-M314N / MX-M314NR / MX-M314NV / MX-M314U / MX-M354N / MX-M354NR / MX-M354U (serv.man68) Technical Bulletin online

 
Sharp Electronics (UK) Ltd., Document Systems Support
 
 
 
1/2 
Date:  
20
th
 of October 2014 
Model:  
See below 
Ref.:  
DCE912 
Colour:  
 
White 
Page:  
1 of 2 
TECHNICAL BULLETIN 
COUNTERMEASURE FOR NO POWER DUE TO 
DC POWER SUPPLY PWB TROUBLE 
 
1. Model Name: MX-M264N/M314N/M354N/M264U/M314U/M354U 
 
2. Symptom: 
1. A damaged coil on the DC PWB (L207) will result in the blowout of a fuse preventing   
 
 
    the power from turning on. 
 
 
2. Incorrect insertion of CN7 to CN4 on the DC PWB will cause the Fuser Lamp to stay   
 
 
    on when the machine is powered off resulting in Fuser Damage. 
 
3. Description: 
1. Enhancement for the damage of the coil (L207) has been done by controlling the coil   
 
 
    (L207) of DC power supply PWB with Q value. 
 
 
2. As a countermeasure for incorrect insertion of CN 7 to CN 4 a dummy housing has   
 
 
    been added to CN4. 
 
 
 
Q value: indicates the damage of coil (L207).    When Q value reaches the certain value   
 
 
or less, the damage level of the coil (L207) increases and the heating value also   
  increases. 
 
 
 
- Identification of New DC power supply PWB (controlled with Q value) 
 
 
 
 
 
 
 
 
 
 
 
 
 
or 
 
 
 
 
  Last digit of the parts code: 
  e.g. :”4” of RDENC0071QSP4 
  After 4320Z* ;   
  “*” of 4320Z* is an arbitrary number. 
 
Sharp Electronics (UK) Ltd., Document Systems Support
 
 
2/2 
 
  - Insertion position of dummy housing 
 
  - Dummy housing   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
4. Action: 
 
- RDENC0071QSP4 
: From mid-October 2014 production 
 
- RDENC0072QSP4 
: From mid-December 2014 production 
 
- RDENC0077QSP5 
: From mid-October 2014 production 
 
- RDENC0078QSP4 
: From mid-December 2014 production 
 
 
Note1) Implementation times above are the times of the dummy housing being added. 
 
Note2) Control of the coil (L207) with Q value has been already implemented at the manufacturer   
 
              of DC power supply PWB from March 2014, and therefore it is supported from mid-March   
 
              2014 production even though the parts code is the old one. 
 
       (For the identification, please see the previous page.)   
 
5. Parts Action: 
Ref. 
No. 
Model 
name 
Version P/G No. 
Current parts 
New parts 
Price
rank
Q'ty Parts 
name 
Effective 
time 
Inter- 
change-
ability 
Parts code 
Parts code 
MX-M264N 
MX-M314N 
MX-M354N 
MX-M264U 
MX-M314U 
MX-M354U 
120V 
Series 
23-28 
RDENC0071QSP2
RDENC0071QSP3
RDENC0071QSP4
CB 
Low voltage power 
supply unit 
2014/10 
Mid 
200V 
Series 
RDENC0072QSP2
RDENC0072QSP3
RDENC0072QSP4
2014/12 
Mid 
Taiwan
Brazil 
RDENC0077QSP2
RDENC0077QSP4
RDENC0077QSP5
2014/10 
Mid 
South 
Africa 
RDENC0078QSP2 RDENC0078QSP4
CC 
2014/12 
Mid 
<Interchange> 
1. Interchangeable. 
4. Not interchangeable. 
2. Current type can be used in place of new type. 
New type cannot be used in place of current type. 
5. Interchangeable if replaced with same types of   
related parts in use. 
3. Current type cannot be used in place of new type. 
New type can be used in place of current type. 
6. Others. 
Parts marked with "
" is important for maintaining the safety of the set. Be sure to replace these parts with 
specified ones for maintaining the safety and performance of the set. 
 
  Insertion position of dummy housing 
  After insertion of dummy housing 
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Here you can view online or download Sharp MX-M264N / MX-M264NR / MX-M264NV / MX-M264U / MX-M314N / MX-M314NR / MX-M314NV / MX-M314U / MX-M354N / MX-M354NR / MX-M354U (serv.man68) Technical Bulletin in pdf. This Technical Bulletin can help you recover, restore, fix, disassemble and repair Sharp MX-M264N / MX-M264NR / MX-M264NV / MX-M264U / MX-M314N / MX-M314NR / MX-M314NV / MX-M314U / MX-M354N / MX-M354NR / MX-M354U (serv.man68) Copying Equipment. Information contained in Sharp MX-M264N / MX-M264NR / MX-M264NV / MX-M264U / MX-M314N / MX-M314NR / MX-M314NV / MX-M314U / MX-M354N / MX-M354NR / MX-M354U (serv.man68) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).