PC 720, 740, 750, 770 Copiers
Service Manual

$9.99
PC 720, 740, 750, 770 Copiers <br>Service Manual
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PC 720, 740, 750, 770 Copiers SERVICE MANUAL

This Service Manual contains basic facts and figures about the plain copier PC 720, 740, 750, 770 and is compiled to serve as a handy reference for servicing the machine in the field.

This Service Manual consists of the following chapters:

Chapter 1
General Description introduces the copier’s features and specifications, shows how to operate the copier.

Chapter 2
Copying process deals with the inner workings of the copier associated with the generation of copies.

Chapter 3
Operations and timing explains how the copier's electrical and mechanical systems are related to each other with respect to functions and timing of operations.

Chapter 4
Mechanical system - is discussed as to its operation, disassembly, reassembly and adjustment.

Chapter 5
Installation gives step-by-step instructions for installing the copier together with checks to make for each step

Chapter 6
Maintenance and Servicing contains tables of replacement parts and consumables.

Chapter 7
Externals/Auxiliary Mechanisms shows the copier’s external parts, and explains the principles used for the copier’s various control mechanisms in view of the functions of electrical and mechanical units and in relation to their timing of operation. It also shows how these units may be disassembled/assembled and adjusted.

Chapter 8
Installation introduces requirements for the site of installation, and shows how the copier may be installed using step-by-step instructions.

Chapter 9
Maintenance and Servicing provides tables of periodically replaced parts and consumables/durables and scheduled servicing charts.

Chapter 10
Troubleshooting provides tables of maintenance/inspection, standards/adjustments, and problem identification (image fault/malfunction).

Appendix contains a general timing chart and general circuit diagrams.

All service persons are expected to have a good understanding of the contents of this
Service Manual and all relevant Service Information bulletins and be able to identify and
isolate faults in the machine.

FORMAT: Scanned copy, PDF document!
ZIP archive: 23 585 kB

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We are in business since 2002 and do our best to give our customers perfect service!

  john Liang 2018-08-16 18:24:01  
  I took a gamble last week by buying a Epson Pro 4900 for less than $140 thinking if I could not get it going, I can at least take the remaining ink out of the cartridge and use it on my other printers.

The initial nozzle test was not so bad for a printer that was unused for about 1 year, I got six Nozzles firing at around 90% not bad, the next thing I did was the popular Windex treatment, I ran 4 sessions of Windex treatment on the printhead, first one lasted 1 hour, second one lasted 2 hours and third one lasted 4 hours and the last one lasted 8 hours, I got a fully soaked paper towel in my last two treatments, I ran a series of power clean on the non firing nozzles but the Green nozzle remain clogged.
At this stage I thought this program may be my last chance to rescue this printer. I bought the program at 6 pm today, I ran the CL1 clean on OR/GR channel and the green nozzle remain clogged, I then ran the CL2 clean on the same nozzles and the same result, at this point I thought maybe this printer is completely dead but I will give CL3 a shot, I went for dinner when CL3 clean was performed on the printer. I came back immediately printed the nozzle check I got the perfect Nozzle pattern on almost every single colour nozzle except Cyan which has a few bar missing, a quick CL1 clean on Cyan/Magenta fix that.
The next thing I did was to run a quick paper profile on this printer with X-rite software, I printed two test pattern page to calibrate the printer, then come the first real print on my Epson Stylus Pro 4900 it was absolutely brilliant, the best printer I have ever own and the IQ on one of the cheapest glossy media I could find was simply breath taking.

I have to say without this software my $140 purchase would probably end up in the rubbish dump.
I must say I was skeptical about the truthfulness of the success that other has with this software but with myself actually tried this software, I have no reservation but to recommend that anyone who has a clogged Epson Pro 4900 to give this program a shot it may just save your printer.

On the scale of 10 I would probably give it a 11 and it is more than just good!
  TT Impact 2016-02-29 16:56:49  
  Key worked as charm, almost wrote off this guy after 15k pages, but it looks like it is back to business.
  Liz Hunter 2022-07-12 09:02:03  
  Thank you so much. You have helped me twice now. Once 2 yrs ago and just today, with the reset key to get my printer going again and I am so happy as I love my printer and it works perfectly and doesn't need to go to landfill. I have emptied the waste ink pads twice now, washed and dried so they will be the next thing I replace soon.
  James Whiting 2016-07-07 06:27:39  
  You all rock! Keeping a favorite printer alive! Thanks again😎...it\'s beyond its stated life span, but the reset key resolved my bw issues...it\'s breathing and printing true again after 2 months of frustration! Tony
  Charles Brown 2012-06-22 20:30:54  
  Thrilled to bits - I thought my trusty printer was destined for the scrap heap ( although nothing wrong except it would no longer operate due to "ink pad full") and I would have to buy new, until I alighted on your product . Also if the ink pad actually causes problem tyou advise where I can buy a replacement kit and do it myself. You perform a great service to printer users. Well done!
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