Konica 7920 Wiring Diagram 7920fv4e
FrameMaker Ver.5.5(PC) 7915/7920 Unit Replacement Manual
01.02.09
UNIT REPLACEMENT
MANUAL
18605
FrameMaker Ver.5.5(PC) 7915/7920 Unit Replacement Manual
01.02.09
CONTENTS
1. The Unit Life Manual ........................................................................................1
2. The Indication of Replacement for CRU/TFU/FRU .......................................... 1
3. Unit Replacement Manual ................................................... .... .. .... ....... .. .... .. ...1
3-1. Unit Layout ................................. .......................... ............ ............. ...........1
3-2. Replacing the Units ............................... ............ .......................... ............ .2
(1) Replacing the Fusing Web Unit ....................... ............ ....................2
(2) Replacing the Oil Coating Unit ........................................................6
(3) Replacing the Imaging Unit (C, M, Y) ..................................... .........11
(4) Replacing the Waste Toner Bottle .................................... ...............19
(5) Replacing the Imaging Unit Bk .................... ....................................21
(6) Replacing the Fusing Unit ........................ .......................... .............22
(7) Replacing the Paper Dust Remover, Image Transfer Roller Unit,
Image Transfer Belt Unit, and Ozone Filter .....................................26
APPENDIX
7915/7920 OVERALL WIRING DIAGRAM (1/4) .....................................................A-1
7915/7920 OVERALL WIRING DIAGRAM (2/4) .....................................................A-2
7915/7920 OVERALL WIRING DIAGRAM (3/4) .....................................................A-3
7915/7920 OVERALL WIRING DIAGRAM (4/4) .....................................................A-4
7915/7920 ELECTRICAL PARTS LAYOUT............................................................A-5
7915/7920 CONECTORS LAYOUT........................................................................A-6
9020/7915/7920 CIRCUIT DIAGRAM (1/5)............................................................A-7
9020/7915/7920 CIRCUIT DIAGRAM (2/5)............................................................A-8
9020/7915/7920 CIRCUIT DIAGRAM (3/5)............................................................A-9
9020/7915/7920 CIRCUIT DIAGRAM (4/5)............................................................A-10
9020/7915/7920 CIRCUIT DIAGRAM (5/5)............................................................A-11
7915/7920 ADJUSTMENT ITEM LIST....................................................................A-12
DF-331 OVERALL DIAGRAM.................................................................................A-13
ST-134 OVERALL DIAGRAM.. ...............................................................................A-14
PF231 OVERALL DIAGRAM ..................................................................................A-15
DB-431 OVERALL DIAGRAM.................................................................................A-16
FS-133/FS-134 OVERALL DIAGRAM ....................................................................A-17
AD-231 OVERALL DIAGRAMA-18
i
1. The Unit Life Manual
NOTES
• The life specifications values represent the number of copies made or figures equivalent to it when given conditions are met. They can be more or less depending on the copier operating conditions
of each individual user.
• The initiation of a new copy cycle is inhibited upon 1K after a near life condition has been detected for all units (except the Toner Bottle and Waste Toner Bottle).
1
Unit Life Spec. Value
Toner Bottle – B/E An approximate life value is 10K under the specified conditions. – 10K
Waste Toner Bottle 40K B/C/D/E/F
Fusing Web Unit 17K B/C/D/F
20-cpm copier Oil Coating Unit 33K
15-cpm copier Oil Coating Unit 26K 26K 27K
Fusing Unit 101K B/C/D/F The life specifications value is based on A4C or Letter C. 101K
Transfer Belt Unit 120K A/B/C/D/F The life specifications value is based on A4C or Letter C.
20-cpm copier Imaging Unit (C, M, and Y) 30K
15-cpm copier Imaging Unit (C, M, and Y) 27K
20-cpm copier Imaging Unit (Bk) 50K
15-cpm copier Imaging Unit (Bk) 47k
Copying Condition
Code
A/B/C/D/F
A/B/C/D/F
Description Near Life Value Life Value
A waste toner full condition is detected when about 4.5K copies are made after a
waste toner near-full condition has been detected.
The life specifications value is based on A4C or Letter C. A near life condition is
detected when a web empty condition is detected or a predetermined number of
copies are made, whichever arrives earlier.
The life specifications value is based on A4C or Letter C. A near life condition or a
life condition is detected when the Oil Coating Roller has turned a predetermined
period of time or a predetermined number of copies are made, whichever arrives
earlier.
The near life and life time values are detected when the PC Drum has turned or the
Developing Unit has been energized for a predetermined period of time, whichever
arrives earlier.
– 40K
16K 17K
33K 34K
2 120K
✽
(17400M)
3 4415M
✽
(30K)
3 4415M
✽
(27K)
3 6972M
✽
(50K)
3 6972M
✽
(47K)
1 102K
✽
2 121K
✽
(17545M)
3 4562M
✽
(31K)
3 4562M
✽
(28K)
3 7122M
✽
(51K)
3 7122M
✽
(48K)
M: minutes
✽
1: As a rule, the Fusing Unit is to be replaced at the same time that the Fusing Web Unit is replaced a sixth time (17K × 6 = 102K). If the Fusing Web Unit is replaced before 17K is reached, there
will be a discrepancy in the replacement cycle, resulting in a near life and life value ranging between 90K and 110K.
✽
2: The life of the Transfer Belt Unit is controlled based on the number of copies made. The life counter gives a time value display.
✽
3: The life of the Imaging Unit is controlled based on a time value. The life counter gives a time value display.
• Conditions for Life Specifications Values
Copying Condition 7920 7915
Job Type A Making two copies per job
Paper Size B A4 or Letter
Color Ratio C C (color) : Bk (black) = 5 : 1 C (color) : Bk (black) = 2.5 : 1
CV/M D 6K 3.5K
Original Density E B/W = 5% for each color
No. of Operating Days per Month F 20 days (Power Switch turned ON and OFF 20 times per month)
FrameMaker Ver.5.5(PC) 7915/7920 Unit Replacement Manual
01.02.09
2. The Indication of Replacement for CRU/TFU/FRU
✽
K=1,000 copies
✽
The contents of the this list are subject to change without notice.
✽
For details, see the unit life manual about the PM cycle.
No. Unit Name Maintenance Message Display
Imaging Unit
1.
(Bk)
Imaging Unit
2.
(C)
PM Cycle
CF2001/
CF1501
7122 min
(51K/48K)
4562 min
(31K/28K)
Page
No.
P-21
P-11
Imaging Unit
3.
(M)
1
4562 min
(31K/28K)
P-11
FrameMaker Ver.5.5(PC) 7915/7920 Unit Replacement Manual
01.02.09
No. Unit Name Maintenance Message Display
Imaging Unit
4.
(Y)
5. Fusing Unit 102K/102K P-22
PM Cycle
CF2001/
CF1501
4562 min
(31K/28K)
Page
No.
P-11
Oil Coating
6.
Unit
34K/27K P-6
2
FrameMaker Ver.5.5(PC) 7915/7920 Unit Replacement Manual
01.02.09
No. Unit Name Maintenance Message Display
Fusing Web
7.
Unit
Waste Toner
8.
Bottle
PM Cycle
CF2001/
CF1501
17K/17K P-2
40K/40K P-19
Page
No.
Image
9.
Transfer Belt
Unit
3
17545 min
(121K/121K)
P-26
FrameMaker Ver.5.5(PC) 7915/7920 Unit Replacement Manual
01.02.09
No. Unit Name Maintenance Message Display
Image
10.
Transfer
Roller Unit
Paper Dust
11.
Cleaner
12. Ozone Filter Nothing to indicate 121K/121K P-26
Nothing to indicate 121K/121K P-26
Nothing to indicate 121K/121K P-26
PM Cycle
CF2001/
CF1501
Page
No.
4
FrameMaker Ver.5.5(PC) 7915/7920 Unit Replacement Manual
01.02.09
3. Unit Replacement Manual
3-1. Unit Layout
Image Transfer Belt Unit
Replace every 121 K.
Replace the waste toner
bottle about 4.5 K prints
after WASTE TONER
BOTTLE NEARLY FULL
is detected.
Ozone Filter
Replace every 121 K.
Fusing Web Unit
Replace the web unit every 17 K prints,
or about 1 K prints after WEB UNIT
NEARLY EMPTY is detected.
4004D301AA
Imaging Unit
C, M, Y: Replace every 4,562 M.
Bk: Replace every 7,204 M.
Fusing Unit
Replace every 102 K.
1
Oil Coating Unit
Replace every 34 K or
325,000 sec.
Paper Dust Remover
Replace every 121 K.
Image Transfer Roller Unit
Replace every 121 K.
4004D351CA
FrameMaker Ver.5.5(PC) 7915/7920 Unit Replacement Manual
01.02.09
3-2. Replacing the Units
(1) Replacing the Fusing Web Unit
Removal method
NOTE
• Before replacing the fusing web unit, ensure that it is not hot.
1. Turn OFF the main switch,
2. Open the Upper Right
NOTE
• When opening the upper
4004D352CA
then wait for about 20 minutes.
Door.
right door, be sure to support it with your hand until it
is in the fully open position.
If you remove your hand
from the upper right door, it
may drop, and the resulting
impact may cause the
hinges to bend.
➀
➁
➁
➀
2
4004D305AA
3. Release the two blue lock
levers.
➀
(
: Push up, ➁: Rotate)
FrameMaker Ver.5.5(PC) 7915/7920 Unit Replacement Manual
01.02.09
4004D306AA
Terminals (metal)
4. Grasp the two blue lock
levers, and remove the
fusing web unit.
NOTE
• Do not touch the metal ter-
minals beneath the fusing
web unit (on the fusing unit
side).
Failure to observe this precaution may cause an electrostatic discharge, resulting
in a breakdown.
3
4004D307AA
FrameMaker Ver.5.5(PC) 7915/7920 Unit Replacement Manual
01.02.09
Installation method
4004D308AA
➀
➁
1. Remove the fusing web
unit from its box, and
remove the packing material.
2. Grasp the two blue lock
levers, and set the fusing
web unit in place.
NOTE
• When setting the fusing web
unit, align the ▼ mark on
the fusing web unit with the
▼
mark on the fusing unit.
3. Lock the two blue lock
levers.
➀
: Push, ➁: Rotate,
(
➂
: Push down)
➂
➂
➀
➁
4004D309AA
4
FrameMaker Ver.5.5(PC) 7915/7920 Unit Replacement Manual
01.02.09
4004D353CA
4. Close the Upper Right
Door.
5
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