FP-7742, FP-7750 - Panasonic Copying Equipment Service Manual (repair manual)

ORDER NO. OED9607318C1

Plain Paper Copier

FP-7742/7750

(Field Service)

*

 WARNING

This service information is designed for experienced repair technicians only and
is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of
potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced
professional technicians. Any attempt to service or repair the product or products
dealt with in this service information by anyone else could result serious injury or
death.

This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment
is operated in a commercial environment. This equipment generates, uses, and
can radiate radio frequency energy and, if not installed and used in accordance
with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to
cause harmful interference in which case the user will be required to correct the
interference at his/her own expense.

Any unauthorized changes or modifications to this equipment would void the
users authority to operate this device.

This manual was developed and is supplied to authorized servicing dealers by
Panasonic Communications & Systems Co. for the sole purpose of providing
information necessary for the equipment's proper support. It is intended that this
information be confidential and may not be reproduced without prior written consent
from Panasonic Communications & Systems Co. Panasonic Communications &
Systems Co. reserves that right to change any information enclosed herein without
prior notification.

Rear Jacket

Unpacking/

Installation

Troubleshooting

PCB Connector and

Signal Information

Component

Location

Preventive

Maintenance

Contents / Index

I. Component Location

1.1 Inner View .......................................................................................... 1-1

1.2 Fan/Motor Location ............................................................................ 1-2

1.3 Sensor Location ................................................................................. 1-3

1.4 Solenoid/Clutch/Discharge Lamp Location ........................................ 1-4

1.5 PCB Location ..................................................................................... 1-5

II. Preventive Maintenance

2.1 Maintenance Chart ............................................................................ 2-1

III. PCB Connector and Signal Information

3.1 Main CPU PCB .................................................................................. 3-1

3.2 Control Panel PCB ........................................................................... 3-16

3.3 Paper Feed Driver PCB ................................................................... 3-24

3.4 Automatic Duplex Unit Driver PCB .................................................. 3-28

3.5 Low Voltage Power Supply PCB ..................................................... 3-32

3.6 AC Driver PCB ................................................................................. 3-45

IV. Troubleshooting

4.1 Service Mode ..................................................................................... 4-1

(1) Service mode function ............................................................. 4-1

(2) Service mode procedure ......................................................... 4-2

(3) F4 mode .................................................................................. 4-4

(4) F5 mode copier function programming ................................. 4-16

(5) F6 mode adjustment and programming ................................ 4-21

(6) F7 mode electronic counter ................................................... 4-26

(7) F8 mode copier operation adjustment ................................... 4-27

4.2 Self-diagnostics/Machine Malfunctions ............................................ 4-29

(1) User error .............................................................................. 4-29

(2) Paper jam .............................................................................. 4-35

(3) Machine error ........................................................................ 4-38

4.3 User Preset Mode ............................................................................ 4-53

V. Unpacking/Installation

5.1 Installation Requirements .................................................................. 5-1

5.2 Contents Check ................................................................................. 5-1

5.3 Unpacking .......................................................................................... 5-1

5.4 Installation Procedure ........................................................................ 5-2

5.5 Adjustment ......................................................................................... 5-7