KONICA 1312 Service Manual ech5
Chapter 5 Disassembly
5-1. Cover ....................................................... 5-1
5-1-1. Platen cover ........................................ 5-1
5-1-2. Left cover.............................................5-1
5-1-3. Right cover ..........................................5-1
5-1-4. Upper rear cover .................................5-1
5-1-5. Lower rear cover ................................. 5-1
5-1-6. Front cover ..........................................5-1
5-2. Platen glass ............................................5-2
5-3. Operation panel......................................5-2
5-4. Paper feed unit .......................................5-2
5-4-1. Paper feed (segment) roller
1
(Main unit) ...........................................5-2
1
5-4-1'. Paper feed (segment) roller
(Optional cassette feeder) .............5-2-1
5-4-2. Slip roller ............................................. 5-3
5-5. Conveyance and transfer unit .............. 5-3
5-5-1. Transfer roller...................................... 5-3
5-5-2. Upper regist roller............................... 5-3
5-5-3. Lower regist roller .............................. 5-3
5-6. Fixing unit ............................................... 5-4
5-6-1. Fixing upper cover.............................. 5-4
5-6-2. Thermistor and thermostat ................5-4
5-6-3. Heater lamp ......................................... 5-4
5-6-4. Separation claws ................................ 5-4
5-6-5. Heat roller ............................................5-5
5-6-6. Pressure (rubber) roller...................... 5-5
5-7. Optical section ....................................... 5-5
5-7-1. Lens cover ........................................... 5-5
5-7-2. No. 6 mirror unit .................................. 5-5
5-7-3. Exposure lamp ....................................5-5
5-7-4. Temperature fuse ................................ 5-5
5-7-5. Scanner wire ....................................... 5-6
5-8. SDH unit .................................................. 5-6
5-8-1. S1sensor.............................................. 5-6
5-8-2. S2 sensor............................................. 5-6
5-8-3. Paper feed clutch, paper feed
roller ..................................................... 5-7
5-8-4. Separation roller ................................. 5-7
5-8-5. Gear frame ........................................... 5-7
5-8-6. Lower conveyance roller.................... 5-7
5-8-7. Lower turn roller ................................. 5-7
5-8-8. Upper turn roller ................................. 5-7
5-8-9. Paper exit roller................................... 5-7
5-8-10. Upper conveyance roller .................. 5-8
5-9. PCB ......................................................... 5-8
5-9-1. Operation PCB .................................... 5-8
5-9-2. Main PCB .............................................5-8
5-9-3. High voltage PCB................................ 5-9
5-9-4. Power PCB .......................................... 5-9
5-10. Replacement of the Ozone filter .......5-10
MODEL
1312
MANUAL
SERVICE HANDBOOK
REVISED EDITION
1
DATA
May.1999
PAGE
METHOD
REPLACEMENT
Chapter 5 Disassembly
Cautions for disassembly and assembly
work:
1) Always disconnect the power plug as protection
against electric shocks and to prevent damaging the
internal circuit.
2) If the work time with the upper unit opened becomes
long, pull out the drum unit and store it in a dark
place. (Prevention of the light fatigue and scratches.)
5-1. Cover
5-1-1. Platen cover
Pull off the platen cover.
5-1-2. Left cover
Remove the four screws, open the upper unit and
remove the left cover.
5-1-4. Upper rear cover
Remove the five screws (one of the five screws is
also used to fix the document scale). Then open the
upper unit and remove the upper rear cover.
Note: Do not loosen the other document scale fixing
screws as the center position is deviated by
loosing them.
5-1-5. Lower rear cover
Loosen the five screws, and remove the lower rear
cover.
5-1-3. Right cover
Remove the five screws (two of the five screws are
also used to fix the document scale). Then remove
the right cover.
Note: Do not loosen the other document scale fixing
screws as the center position is deviated by
loosing them.
5-1-6. Front cover
1) Pull out the cassette and remove the three
screws. Then open the upper unit and remove the
screw on the left side.
2) Unhook the three hooks on the back side of the
cover and remove the front cover.
5-1
Chapter 5 Disassembly
5-2. Platen glass
1) Remove the left cover. (Refer to section 5-1.)
2) Lift the edge of the glass slightly, and pull the glass
out in the direction of the arrow.
Note 1: If the edge of the glass is lifted too high, the
corners could be broken.
Note 2: The platen glass can also be removed by
removing the right cover and document scale.
However, as the center position will be
deviated, the glass could drop when the
upper unit is opened.
5-3. Operation panel
1) Remove the right cover, platen glass and left cover.
(Refer to sections 5-1 and 5-2.)
2) Open the upper unit, and remove the six screws.
Disconnect the flat cable connector inside and
remove the operation panel.
2) Loosen the fixing screws on the rear side of the
TC roller by two or three turns.
3) Remove the five fixing screws, disconnect the
three connectors, and remove the paper feed unit.
Note: Take care not to scratch the guide film when
installing or removing the paper feed unit.
Guide film
5-4. Paper feed unit
1) Open the upper unit, and remove the protection
cover (two screws) on the rear side.
Note: As the protection cover also acts as the regist
roller clutch stopper, make sure to align with the
clutch unit stopper position when assembling.
1
5-4-1. Paper feed (segment) roller (Main unit)
1) Remove the E-ring and the paper feed roller
assembly.
MODEL
1312
MANUAL
SERVICE HANDBOOK
REVISED EDITION
5-2
1
DATA
May.1999
PAGE
5-2
METHOD
REPLACEMENT
Chapter 5 Disassembly
2) Unhook and pull out the gears and paper feed
rollers rom the shaft.
Paper feed roller / F
Paper feed roller / R
Note1: Take care not to lose the bearing and the
spacer washer.
Note2: Take care not to mix the paper feed
roller/F up with the rear paper feed roller/R,
because they are different.
5-4-1'. Paper feed (segment) roller (Optional
cassette feeder)
1) Remove the main unit from the optional cassette
feeder.
2) Push down the hook, and pull the paper feed roller
to the front.
3) Remove the paper feed roller from the rear
bearing, and remove the roller from the front
holder.
Hook
A projection is on the one side of the paper feed roller
Paper feed roller / R Paper feed roller / F
4) Unhook and pull out the paper feed roller from the
shaft, as same procedure as the roller of the main
unit.
Note1: The paper feed rollers of the optional
cassette feeder are differed with the rollers of
the main unit.
Note2: The front and rear paper feed roller of the
optional cassette feeder are same.
There are projections on each
side of the paper feed roller.
MODEL
1312
MANUAL
SERVICE HANDBOOK
REVISED EDITION
5-3
1
DATA
May.1999
PAGE
5-2-1
METHOD
ADDITION
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