Panasonic FP-7742 / FP-7750 (serv.man2) Service Manual ▷ View online
1-9
Introduction
( Inner view )
1
Half-speed unit
2
Full-speed unit
3
Lens Position sensor
4
Thermistor
5
AE Sensor
6
Main motor
7
Lens unit
8
Charge corona
9
No.6 mirror
10
Slit glass
11
No.4 mirror
12
No.5 mirror
13
LED array
14
Magnetic roller
15
Registration roller
16
Bypass pick-up roller
17
Bypass paper feed roller
18
Bypass DFP roller
19
Middle roller
20
Paper feed roller
21
DFP roller
22
Pick-up roller
23
ADU Paper feed roller
24
Corona cleaner
25
Transfer/Separation corona
26
Drum
27
Transfer belt
28
Pressure roller
29
Fuser lamps
30
Fuser separation finger (lower)
31
Reverse roller
32
Fuser separation finger (upper)
33
Paper exit roller
34
Paper exit sensor
35
Heat roller
36
Cleaning Web roller
37
Full-speed unit home postion sensor
38 Drum separation finger
2
3
4
5
6
7 38 8
9
10
11 12
13
14
15
16
15
16
17
18
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
1
1-10
1. 6 Copy Process
Charger
Discharge lamp
Cleaning
Fusing
Exit
ADU
Paper feed
Separation
Transfer
Developer
Toner
Exposure
Original
Reduction Discharge
Trimming
–DC
Discharge lamp:
Transfer/Separation
Fusing:
Cleaning:
Primary Charge:
Image Exposure:
Developing:
Drum surface
approximately 800V
approximately 800V
Charge corona
Drum
Latent
charge
image
charge
image
Illumination
Magnetic
roller
roller
Bias: –250 V
Latent charge
image(–)
image(–)
Discharge
lamp
lamp
Heat roller
Fuser lamp
Paper
Pressure
roller
roller
Latent image
Transfer
corona
corona
Cleaning
blade
blade
Drum
Blacking prevention
Toner (+)
Toner
Paper
Separation
corona
corona
1-11
Introduction
1. 7 Precautions on Set Up
Copy machine performance and the copy quality is subject to and dependant
on environmental conditions. To maintain good performance, quality, and safe
operation, observe the following precautions:
1)
Do not install the system under the following conditions to operate safely and
avoid trouble.
• High temperature, high humidity, low temperature or low humidity
• The temperature or humidity varies suddenly
• Being exposed to direct sunlight
• Dusty space
• Badly ventilated location
• Exposed to chemical gases (such as ammonia gas)
• Exposed to strong vibration
• Directly exposed to direct wind (ex. outlet of air conditioner)
2)
The weight of machine is 220lb(100 kg) or more with options. It must be placed
on a firm platform which is level.
3)
The maximum power consumption is 1.5 kW. Use an independent power supply
of 120 V and 15 A (220-240V and 7A)or higher. (Do not use a extension cord.)
4)
Make sure the machine is properly grounded. (Do not ground to gas or water
pipe.)
• A ground terminal is provided on the back of the copier main body.
• Strip the end of a ground wire and connect with a ground terminal.
5)
Install the machine with enough space around it.
4"/100 mm
14"/350mm
28"/700mm
Copier
Multi sheet bypass
Exit tray
1-12
1. 8 Precautions with Consumables
(1)
Photoreceptor drum
• Do not touch the surface (with the hand or any thing else).
• Stand the drum with the drum gear up for storage.
• Be careful not to smear with saliva, water, oil and so on.
• Do not place a where the temperature is high.
• Do not place it in strong light (such as direct sunshine or at window).
• Do not expose it to chemical gas or vapor.
• Do not store the developer unit with the photo receptor drum installed without
covering it with clean paper.
(2)
Toner Developer
1)
Do not mix different types of toner and developer.
• The machines are designed to use exclusive toner and developer for specific
models. Do not mix with toner and developer for other models.
2)
Do not mix foreign materials.
Be careful not to include foreign materials in the toner and developer. If you
spilled toner or developer on a table or floor when adding toner or developer in
the developer unit, discard what was dropped. Such supplies may damage
the drum as well as cause other trouble with the image.
3)
Do not place into other containers.
Toner and developer must not be placed into other containers, because some
containers may change the characteristics of the supply. Vinyl chloride
potentially changes the characteristics of supplies because of migrating
plasticizers.
4)
Precautions on storage and transport
• Toner and developer additives are sensitive to temperature (high temperature
in particular) and humidity (high humidity in particular). Pay attention to the
following items for storage and transport.
• Store them in a dark and cool location (lower than 95 F/35 C) and out of direct
sunshine.
• Be careful not to expose them to rain or direct sunshine during transportation.
When delivered by truck the temperature inside must be not higher than 104
F/40 C. (Under the sun in summer, the inside temperature can typically be
140 F/60 deg.C or higher in a closed vehicle compartment.)
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