Read Panasonic KX-MB2110RUW / KX-MB2130RUW / KX-MB2170RUW / KX-MB2117RUB / KX-MB2137RUB / KX-MB2177RUB (serv.man3) Service Manual Supplement online
ORDER NO. KMF1508733SE
Multi-Function printer
Model No.
KX-MB2110RUW
KX-MB2130RUW
KX-MB2170RUW
KX-MB2117RUB
KX-MB2137RUB
KX-MB2177RUB
KX-MB2130RUW
KX-MB2170RUW
KX-MB2117RUB
KX-MB2137RUB
KX-MB2177RUB
(for Russia, Ukraine, Kazakhstan)
TABLE OF CONTENTS
PAGE
1 CHANGES----------------------------------------------------------- 2
1.1. Subject ------------------------------------------------------ 2
1.2. Replacement Parts List ---------------------------------- 2
1.3. Technical Descriptions ----------------------------------- 3
1.4. Troubleshooting Guide ----------------------------------- 5
1.5. Schematic Diagram --------------------------------------- 7
1.6. Printed Circuit Board-------------------------------------- 8
1.7. Exploded View and Replacement Parts List-------- 9
1.2. Replacement Parts List ---------------------------------- 2
1.3. Technical Descriptions ----------------------------------- 3
1.4. Troubleshooting Guide ----------------------------------- 5
1.5. Schematic Diagram --------------------------------------- 7
1.6. Printed Circuit Board-------------------------------------- 8
1.7. Exploded View and Replacement Parts List-------- 9
Please file and use this supplement manual together with the service manual for Model No.
KX-MB2110RUW/KX-MB2130RUW/KX-MB2170RUW/KX-MB2117RUB/KX-MB2137RUB/KX-MB2177RUB
Order No. KMF1408446CE.
KX-MB2110RUW/KX-MB2130RUW/KX-MB2170RUW/KX-MB2117RUB/KX-MB2137RUB/KX-MB2177RUB
Order No. KMF1408446CE.
2
KX-MB2110RUW/KX-MB2130RUW/KX-MB2170RUW/KX-MB2117RUB/KX-MB2137RUB/KX-MB2177RUB
1 CHANGES
1.1.
Subject
SUFFIX LOCATION
1.2.
Replacement Parts List
Suffix
Reason for suffix change
A to B
VE change power supply unit
Reason for Change
*The following items (1-8) indicate the reason for change. See the “Notes” column for each part in ORIGINAL AND NEW PARTS COMPARISON
LISTS.
1. Improve performance
2. Change of material or dimension
3. To meet approved specification
4. Standardization
5. Addition
6. Deletion
7. Correction
8. Other
*The following items (1-8) indicate the reason for change. See the “Notes” column for each part in ORIGINAL AND NEW PARTS COMPARISON
LISTS.
1. Improve performance
2. Change of material or dimension
3. To meet approved specification
4. Standardization
5. Addition
6. Deletion
7. Correction
8. Other
Interchangeability Code (Symbols: B) Following V-Z interchange abilities are indicated on the Notes in the bottom column.
Parts
Set Production
V Original
New
Early (before change)
Late (after change)
Late (after change)
Original or new parts may be used in early or late production sets.
Use original parts until exhausted, then stock new parts.
Use original parts until exhausted, then stock new parts.
W Original
New
Early (before change)
Late (after change)
Late (after change)
Original parts may be used in early production sets only. New parts may be used in early or
late production sets. Use original parts where possible, then stock new parts.
late production sets. Use original parts where possible, then stock new parts.
X Original
New
Early (before change)
Late (after change)
Late (after change)
New parts only may be used in early or late production sets.
Stock new parts.
Stock new parts.
Y Original
New
Early (before change)
Late (after change)
Late (after change)
Original parts may be used in early production sets only. New parts may be used in late
production sets only. Stock both original and new parts.
production sets only. Stock both original and new parts.
Z Other
Ref. No.
Part No.
Part Name & Description
Pcs
Remarks
Notes
Time of change
(Suffix)
Original (Old)
New
Low Voltage Power Supply Board
PCB30
PCB30
N0AC2GH00004
N0AC2GH00005
LOW VOLTAGE POWER
BOARD ASS'Y (RTL)
BOARD ASS'Y (RTL)
1
8
V
B
3
KX-MB2110RUW/KX-MB2130RUW/KX-MB2170RUW/KX-MB2117RUB/KX-MB2137RUB/KX-MB2177RUB
1.3.
Technical Descriptions
1.3.1.
Heat Lamp Control Circuit
Changed from the Original Service Manual section 6.16.
The temperature of the fixing part of the Fuser Unit is converted to a Voltage by THERMISTOR and input to IC300_pinC21.
The heat lamp is turned on/off by the HTRCTL signal (IC300_pinAE22) through the photo triac (PHT1) and the triac (CR1).
Two thermostats are provided on the AC line as the safety protection devices.
Overheat protection circuit is provided so as to prevent the Fuser unit from overheating when CPU cannot control Fuser by any
problem.
IC504 compares Thermistor voltage (THRMSTR0) and predetermined voltage, which is determined by 3.3V, R581 and R584.
If Therm0 voltage becomes lower than this predetermined voltage (this voltage corresponds to about 240°C), output of
IC504_pin7 becomes "H", then Q530 turns ON.
The heat lamp is turned on/off by the HTRCTL signal (IC300_pinAE22) through the photo triac (PHT1) and the triac (CR1).
Two thermostats are provided on the AC line as the safety protection devices.
Overheat protection circuit is provided so as to prevent the Fuser unit from overheating when CPU cannot control Fuser by any
problem.
IC504 compares Thermistor voltage (THRMSTR0) and predetermined voltage, which is determined by 3.3V, R581 and R584.
If Therm0 voltage becomes lower than this predetermined voltage (this voltage corresponds to about 240°C), output of
IC504_pin7 becomes "H", then Q530 turns ON.
Once Q530 turns on, IC507_pin7 keeps "H" even after the THRMSTR0 voltage becomes bigger than the voltage of IC504_pin5.
And when IC507_pin7 keeps "H", both Q500 and Q527 turn off.
As the result, once Fuser temperature exceeds 240°C (this temperature is abnormal condition), no current is supplied to Fuser lamp.
And when IC507_pin7 keeps "H", both Q500 and Q527 turn off.
As the result, once Fuser temperature exceeds 240°C (this temperature is abnormal condition), no current is supplied to Fuser lamp.
1. Heater control sequence at printing mode
a. After receiving printing data, heater turns on.
b. When heater temperature reaches to the Primary Stable Temperature (170
b. When heater temperature reaches to the Primary Stable Temperature (170
qC).
c. When heater temperature reaches to the Secondary Stable Temperature (170
qC/195qC), paper feed starts.
THERMISTOR
CN504
Main Board
10
R534
AE22
CN70
Q527
IC300
2
1
Overheat protection circuit
FUSER RELAY
IC504
C21
CN52
3.3V
6
R580
3.3V
R575
5
7
3.3V
Q500
R576
R503
Q530
R584
R579
THRM0
2
R509
3.3V
4
C507
R578
R581
C571
C572
R577
CN503
C538
DG
R536
R537
Q528
R538
R583
+24V
4
2
Low Voltage Power Board
(PSU P.C.B.)
TRIAC
CR1
PHOTO TRIAC
PHT1
CN3
HTRCTL
CN2
1
2
1
2
AC (L)
AC (N)
AC IN
AC (L)
AC (N)
THERMOSTAT2
THERMOSTAT1
HEAT LAMP
2
R582
HTRCTL
THRMSTR0
R505
4
KX-MB2110RUW/KX-MB2130RUW/KX-MB2170RUW/KX-MB2117RUB/KX-MB2137RUB/KX-MB2177RUB
1.3.2.
SMPS (Switching Mode Power Supply) Section
Changed from the Original Service Manual section 6.18.
The power supply board circuit generates 24Vdc and 12Vdc.
It also supplies AC voltage to the halogen heat lamp in the fuser unit.
The power supply board uses the switching regulator method.
It also supplies AC voltage to the halogen heat lamp in the fuser unit.
The power supply board uses the switching regulator method.
[Input Circuit]
The input current goes into the input rectifier circuit through the filter circuit.
The filter circuit decreases the noise voltage and the noise electric field strength.
The filter circuit decreases the noise voltage and the noise electric field strength.
[Rectifier Circuit]
The input circuit is rectified by RC1 and charge C2 to make DC voltage.
Then it supplies power to the converter circuit.
Then it supplies power to the converter circuit.
[Kick-on Voltage Circuit]
Bias is applied to the Q1 gate via this circuit when the AC power is turned on and Q1 begins operating.
[Control Circuit and Error Detecting Circuit 1]
The control circuit detects the voltage that increased in an error detect circuit 1 and controls it to become the predetermined out-
put voltage.
This is shown as follows.
When the output voltage of the 24V circuit or 12V circuit increases, the current of the photo coupler PH1 increases, the pulse
width of the output control IC becomes narrower and the ON period of Q1 becomes shorter.
put voltage.
This is shown as follows.
When the output voltage of the 24V circuit or 12V circuit increases, the current of the photo coupler PH1 increases, the pulse
width of the output control IC becomes narrower and the ON period of Q1 becomes shorter.
[Over Current Protection (O.C.P)]
The highest drain current of Q1 is limited by a over current circuit. The 24V or 12V output is limited by this circuit.
[Over Voltage Protection (O.V.P)]
If the 24V or 12V output was increased, the VDD of control circuit also was increased.
The control circuit detects the increased VDD and controls it to becomes 0V.
The control circuit detects the increased VDD and controls it to becomes 0V.
Dummy load method (to quickly check the power supply output).
See the Low Voltage Power Supply Board (SMPS Board)Section.
Input
Circuit
Circuit
AC
Input
Input
RC1
VDD
G
H
24V
Kick-on
Voltage
Circuit
Voltage
Circuit
E
F
12V
HTRCTL
GND
Control
Circuit
Circuit
Converter
Circuit
Circuit
C
D
Rectifier
Circuit
Circuit
A
B
+
Error Detecting
Circuit PH1
Circuit PH1
O.C.P
O.L.P
Q1
A-B Voltage Wave Form
C-D Voltage Wave Form
E-F
G-H Voltage Wave Form
0
0
0
T1
Triac
CR1
CR1
Heat Lamp
Photo Triac
Coupler PHT1
Coupler PHT1
Block Diagram
+
+
C2