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CANON NP7120
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of CANON NP7120 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 380 (click to view)
CHAPTER 11 TROUBLESHOOTING

VIII. SELF DIAGNOSIS
The microprocessor on the machine's DC controller PCB is equipped with a self diagnostic mechanism that checks the condition of the machine (particularly, sensors) and indicates an error code in the count/ratio indicator on the control panel upon detection of a fault. In the case of 'E001', 'E0' and '01' are flashed alternately.
Code • • • • • Cause The thermistor (TH1) is faulty. The fixing heater (H1) is faulty. The thermal fuse (FU2) has blown. The DC controller PCB is faulty. The composite power supply PCB is faulty. • Description The temperature detected by the thermistor (TH1) does not reach 65°C 1.5 sec after the Copy Start key has been pressed. The temperature detected by the thermistor (TH1) does not reach 150°C 4 sec after the Copy Start key has been pressed. The temperature detected by the thermistor (TH1) exceeds 230°C. The temperature detected by the thermistor (TH1) exceeds by 30°C or more. The temperature detected by the thermistor (TH1) registers an increase of 100°C or more within 1 sec. The temperature detected by the thermistor (TH1) registers an increase of 40°C or more after it has reached 100°C during standby. The temperature detected by the thermistor (TH1) has exeeded 150°C during copy operation and maximum power is applied for 10 to 14 sec thereafter.

•

• The thermistor (TH1) is faulty. • The DC controller PCB is faulty. • The composite power supply PCB is faulty.

• •

•

•

• • • • • • • • • • • •

The thermistor (TH1) is faulty. The fixing heater (H1) is faulty. The thermal fuse (FU2) has blown. The DC controller PCB is faulty. The composite power supply PCB is faulty. The thermistor (TH1) is faulty. The fixing heater (H1) is faulty. The thermal fuse (FU2) has blown. The DC controller PCB is faulty. The composite power supply PCB is faulty. The main motor (M1) is fault. The DC controller PCB is faulty.

•

• The temperature detected by the thermistor (TH1) drops to and remains 150°C or lower after it has reached 160°C.

• The counter has an open circuit.

• The rotation of the main motor deviates (indicated by MLOCK=0) for 1 sec or more while the main motor drive signal (MMD=1) is being generated. • The counter drive signal is not generated when the counter is driven. • The counter drive signal is not '0' when the counter is not driven.

11-94

COPYRIGHT © 1999 CANON INC.

CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)

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