Panasonic KX-MB1500UCB Service manual
ORDER NO.KMF1107371CE
Multi-Function printer
Model No.
(for Ukraine, Kazakhstan)
KX-
MB1500UCB
© Panasonic System Networks Co., Ltd. 2011
Unauthorized copying and distribution is a violation
of law.
KX-MB1500UCB
TABLE OF CONTENTS
1 Safety Precautions -----------------------------------------------5
1.1. For Service Technicians ----------------------------------5
1.2. AC Caution---------------------------------------------------5
1.3. Personal Safety Precautions ----------------------------6
1.3.1. Moving Sections of the Unit-------------------------6
1.3.2. Live Electrical Sections ------------------------------6
1.4. Service Precautions ---------------------------------------6
1.4.1. Precautions to Prevent Damage from
Static Electricity ----------------------------------------6
2Warning--------------------------------------------------------------7
2.1. About Lead Free Solder (PbF: Pb free) --------------7
2.1.1. Suggested PbF Solder -------------------------------7
2.2. Discarding of P. C. Board --------------------------------8
2.3. Insulation Resistance Test -------------------------------8
2.4. Battery Caution ---------------------------------------------8
2.5. Laser Beam and Fuser Unit Section ------------------8
2.6. Note for Repairing------------------------------------------9
3 Specifications ---------------------------------------------------- 10
4 General/Introduction------------------------------------------- 11
4.1. Optional Accessories------------------------------------ 11
4.2. Translation Lists ------------------------------------------ 11
4.2.1. Error Message (Display)--------------------------- 11
5Features------------------------------------------------------------12
5.1. General Features----------------------------------------- 12
5.2. Hardware Requirements for Multi-Function
Software ---------------------------------------------------- 12
6 Technical Descriptions---------------------------------------- 13
6.1. Connection Diagram------------------------------------- 13
6.2. General Block Diagram --------------------------------- 14
6.3. Main Board Section-------------------------------------- 16
6.3.1. Data Flow---------------------------------------------- 16
6.4. CIS Control Section-------------------------------------- 24
6.5. Motor Drive Section-------------------------------------- 26
6.5.1. Engine Motor Control Circuit --------------------- 26
6.5.2. FB (Flat bed) motor drive circuit -----------------29
6.6. Timing chart and wave form of scanner
motors------------------------------------------------------- 31
6.6.1. Drive mode of FB motor --------------------------- 31
6.6.2. Normal 1-2 phase excitation (half step)-------- 32
6.6.3. W1-2 phase excitation (Quarter step) ---------- 33
6.6.4. W1-2 phase excitation (Quarter step) ---------- 34
6.7. FAN Motor Section--------------------------------------- 35
6.7.1. General ------------------------------------------------ 35
6.7.2. Circuit Diagram of FAN ---------------------------- 35
6.7.3. Speed Control Block-------------------------------- 35
6.7.4. Abnormal detect and Lock protect Block ------38
6.8. Solenoid Driver Section -------------------------------- 39
6.9. LSU (Laser Scanning Unit) Section ----------------- 40
6.10. Sensors and Switches Section ----------------------- 42
6.10.1. Pick up & Registration & Manual paper
sensor ------------------------------------------------- 43
6.10.2. Print timing sensor ---------------------------------- 43
6.10.3. Exit sensor -------------------------------------------- 44
6.10.4. Interlock switch--------------------------------------- 44
6.10.5. Toner Sensor -----------------------------------------45
6.10.6. Drum Life sensor circuit---------------------------- 46
6.11. Operation Board Section ------------------------------- 47
6.12. LCD Section ----------------------------------------------- 48
PAG E PAG E
6.13. HVPS (High Voltage Power Supply) Section ----- 49
6.13.1. HVPS Specification for EUK1MNB31HA------ 49
6.13.2. CHG-BIAS (Charge BIAS)/UNIT ---------------- 49
6.13.3. DEV DC BIAS UNIT -------------------------------- 50
6.13.4. DEV AC BIAS UNIT -------------------------------- 50
6.13.5. TRA (-) BIAS (Transfer (-) BIAS)/TRA (+)
BIAS (Transfer (+) BIAS) UNIT------------------ 50
6.14. Heat Lamp Control Circuit ----------------------------- 51
6.15. Main Board Power Supply Section------------------ 56
6.15.1. 3.3V and 1.2V Power Supply Descriptions --- 56
6.15.2. +5VD Power Supply Descriptions -------------- 57
6.16. Power Supply Board Section ------------------------- 59
6.17. Mechanical Operation ---------------------------------- 60
6.17.1. Printing ------------------------------------------------ 60
7 Location of Controls and Components ----------------- 61
7.1. Overview --------------------------------------------------- 61
7.1.1. Front view --------------------------------------------- 61
7.1.2. Rear view --------------------------------------------- 61
7.2. Control Panel --------------------------------------------- 62
8 Installation Instructions -------------------------------------- 63
8.1. Installation ------------------------------------------------- 63
8.1.1. Installation Space ----------------------------------- 63
8.1.2. Recording Paper ----------------------------------- 64
8.1.3. Documents the Unit Can Send ------------------ 68
8.1.4. Toner Cartridge-------------------------------------- 68
8.1.5. Required computer environment ---------------- 71
8.1.6. Installing Multi-Function Station on a
computer ---------------------------------------------- 72
8.2. Connections----------------------------------------------- 73
9 Test Mode --------------------------------------------------------- 74
9.1. Test Functions-------------------------------------------- 74
9.1.1. Button Code Table ---------------------------------- 75
9.1.2. Print Test Pattern------------------------------------ 76
10 Service Mode----------------------------------------------------- 77
10.1. Programming and Lists--------------------------------- 77
10.1.1. Operation --------------------------------------------- 77
10.1.2. Operation Flow -------------------------------------- 77
10.1.3. Service Function Table ---------------------------- 78
10.1.4. Memory Clear Specification ---------------------- 78
10.2. User Mode (The list below is an example of
the SYSTEM SETUP LIST the unit prints out.) -- 79
10.3. History (Example of a printed out list) -------------- 80
10.3.1. Descriptions of The History Report------------- 81
11 Troubleshooting Guide --------------------------------------- 82
11.1. User Recoverable Errors ------------------------------ 82
11.1.1. Program Mode Table ------------------------------- 84
11.2. Troubleshooting Details -------------------------------- 86
11.2.1. Outline ------------------------------------------------- 86
11.2.2. Starting Troubleshooting -------------------------- 86
11.2.3. Initialization ------------------------------------------- 87
11.2.4. Simple Check List----------------------------------- 88
11.2.5. Simplified Troubleshooting Guide--------------- 89
11.2.6. CALL SERVICE Troubleshooting Guide ------ 92
11.2.7. Print ---------------------------------------------------- 98
11.2.8. Recording Paper Feed --------------------------- 104
11.2.9. Copy and FAX -------------------------------------- 111
11.2.10. Initializing Error ------------------------------------- 113
11.2.11. Operation Panel Section ------------------------- 114
2
KX-MB1500UCB
11.2.12. Sensor Section ------------------------------------- 114
11.2.13. Motor Section --------------------------------------- 116
11.2.14. LSU Section ----------------------------------------- 118
11.2.15. CIS Control Section ------------------------------- 119
11.2.16. High Voltage Value Check Point --------------- 121
11.2.17. High Voltage Section------------------------------ 123
11.2.18. USB Section ---------------------------------------- 128
11.2.19. Main Board Section ------------------------------- 133
11.2.20. Power Supply Board Section ------------------- 134
11.3. Recording Paper Jam ---------------------------------137
11.3.1. When the recording paper has jammed
inside of the unit------------------------------------ 137
11.3.2. When the recording paper is not fed into
the unit properly ------------------------------------140
11.3.3. When the recording paper in the manual
input tray is not fed into the unit properly ---- 141
12 Service Fixture & Tools-------------------------------------- 142
13 Disassembly and Assembly Instructions ------------- 143
13.1. Flow Chart for Disassembly-------------------------- 144
13.2. How to Remove Rear Cover------------------------- 145
13.3. How to Remove Front Cover ----------------------- 145
13.4. How to Remove Right Cover ------------------------146
13.5. How to Remove Left Cover --------------------------147
13.6. How to Remove FB Unit ------------------------------ 148
13.7. How to Remove Upper Cabinet Cover ------------ 149
13.8. How to Remove Bottom Plate ----------------------- 150
13.9. How to Remove Power Board Unit----------------- 151
13.10. How to Remove Fuser Unit -------------------------- 152
13.11. How to Remove Fan, HVPS and Inter-lock
Board ------------------------------------------------------152
13.12. How to Remove Main Board and Shield Cover - 153
13.13. How to Remove Drive Unit --------------------------- 153
13.14. How to Remove Clutch Gear Cover --------------- 154
13.15. How to Remove Pick-up Roller --------------------- 155
13.16. How to Remove Operation Panel Unit ------------ 156
13.17. How to Disassemble FB Unit ------------------------ 157
13.18. How to Remove LSU and Glasses----------------- 158
13.19. Installation Position of The Lead-------------------- 159
13.19.1. Main cabinet section ------------------------------159
13.19.2. Side cabinet section(1) --------------------------- 160
13.19.3. Side cabinet section (2) -------------------------- 161
13.19.4. Side cabinet section (3) -------------------------- 162
13.19.5. Side cabinet section (4) -------------------------- 163
13.19.6. Fuser section --------------------------------------- 164
13.19.7. Power supply unit section ----------------------- 165
14 Maintenance----------------------------------------------------- 166
14.1. Maintenance Items and Component Locations -166
14.1.1. Outline ------------------------------------------------ 166
14.1.2. Maintenance Check Items/Component
Locations--------------------------------------------- 166
14.2. Maintenance --------------------------------------------- 168
14.2.1. Cleaning the White Plates and Glass--------- 168
14.3. Printing Operation Principle-------------------------- 169
14.3.1. Process Chart and Process BIAS ------------- 169
14.3.2. Charging --------------------------------------------- 169
14.3.3. Exposing ---------------------------------------------170
14.3.4. Developing and Transcription------------------- 171
14.3.5. Cleaning of Transfer Roller ---------------------- 172
14.3.6. Fixing ------------------------------------------------- 173
14.4. How to Replace the Flat Package IC -------------- 174
14.4.1. Preparation ------------------------------------------ 174
14.4.2. Removal Procedure ------------------------------ 174
14.4.3. Procedure ------------------------------------------- 175
14.4.4. Removing Solder From Between Pins ------- 175
14.5. Main Board Section------------------------------------ 176
14.5.1. NG Example ---------------------------------------- 177
14.6. Test Chart ------------------------------------------------ 178
14.6.1. ITU-T No.1 Test Chart---------------------------- 178
14.6.2. ITU-T No.2 Test Chart---------------------------- 179
15 Schematic Diagram ------------------------------------------ 181
15.1. For Schematic Diagram ------------------------------ 181
15.2. Main Board ---------------------------------------------- 182
15.2.1. Main Board (1) ------------------------------------- 182
15.2.2. Main Board (2) ------------------------------------- 186
15.3. Sensor Board ------------------------------------------- 188
15.3.1. Operation Board ----------------------------------- 188
15.3.2. Sensor Board--------------------------------------- 189
15.4. High Voltage Power Supply Board----------------- 190
15.5. Low Voltage Power Supply Board ----------------- 191
16 Printed Circuit Board ---------------------------------------- 193
16.1. Main Board ---------------------------------------------- 193
16.1.1. Main Board: Component View ----------------- 193
16.1.2. Main Board: Bottom View ----------------------- 194
16.2. Sensor Board ------------------------------------------- 195
16.2.1. Operation Board ----------------------------------- 195
16.2.2. Interlock Board ------------------------------------- 196
16.2.3. Gear Board ----------------------------------------- 196
16.2.4. Toner Sensor Board ------------------------------ 196
16.2.5. Fuser Board ---------------------------------------- 197
16.3. High Voltage Power Supply Board----------------- 198
16.3.1. High Voltage Power Supply Board:
Component View ---------------------------------- 198
16.3.2. High Voltage Power Supply Board: Bottom
View--------------------------------------------------- 198
16.4. Low Voltage Power Supply Board ----------------- 199
16.4.1. Low Voltage Power Supply Board:
Component View ---------------------------------- 199
16.4.2. Low Voltage Power Supply Board: Bottom
View--------------------------------------------------- 199
17 Exploded View and Replacement Parts List --------- 200
17.1. General Section ---------------------------------------- 201
17.1.1. Operation Panel Section ------------------------ 202
17.1.2. Top Cover Section (1) --------------------------- 204
17.1.3. Top Cover Section (2) ---------------------------- 206
17.1.4. Top Cover Section (3) ---------------------------- 208
17.1.5. Top Cover Section (4) ---------------------------- 210
17.1.6. Fuser Section -------------------------------------- 212
17.1.7. Main Cabinet Section (1) ------------------------ 214
17.1.8. Main Cabinet Section (2) ------------------------ 216
17.1.9. Main Cabinet Section (3) ------------------------ 218
17.1.10. Main Cabinet Section (4) ------------------------ 220
17.1.11. Left-side Cabinet Section(1)-------------------- 222
17.1.12. Left-side Cabinet Section(2) -------------------- 224
17.1.13. Left-side Cabinet Section(3) -------------------- 226
17.1.14. Power Supply Unit Section --------------------- 228
17.1.15. Base Cassette Section--------------------------- 230
17.1.16. Main Unit Section (1) ----------------------------- 232
17.1.17. Main Unit Section (2) ----------------------------- 234
17.1.18. Actual Size of Screws and Washer ----------- 236
17.1.19. Accessories and Packing Materials ---------- 238
17.2. Electrical Parts List ------------------------------------ 240
17.2.1. Main Board------------------------------------------ 240
3
KX-MB1500UCB
17.2.2. Sensor Board --------------------------------------- 243
17.2.3. High Voltage Power Supply Board ------------ 244
17.2.4. Low Voltage Power Supply Board------------- 244
4
KX-MB1500UCB
1 Safety Precautions
1. Before servicing, unplug the AC power cord to prevent an electric shock.
2. When replacing parts, use only the manufacturer's recommended components.
3. Check the condition of the power cord. Replace if wear or damage is evident.
4. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.
5. Before returning the serviced equipment to the customer, be sure to perform the following insulation resistance test to prevent
the customer from being exposed to shock hazards.
1.1. For Service Technicians
• Repair service shall be provided in accordance with repair technology information such as service manual so as to pre-
vent fires, injury or electric shock, which can be caused by improper repair work.
1. When repair services are provided, neither the products nor their parts or members shall be remodeled.
2. If a lead wire assembly is supplied as a repair part, the lead wire assembly shall be replaced.
3. FASTON terminals shall be plugged straight in and unplugged straight out.
• ICs and LSIs are vulnerable to static electricity.
When repairing, the following precautions will help prevent recurring malfunctions.
1. Cover the plastic part's boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on the worktable.
4. Do not touch the IC or LSI pins with bare fingers.
1.2. AC Caution
For safety, before closing the lower cabinet, please make sure of the following precautions.
1. The earth lead is fixed with the screw.
2. The AC connector is connected properly.
5
KX-MB1500UCB
1.3. Personal Safety Precautions
1.3.1. Moving Sections of the Unit
Be careful not to let your hair, clothes, fingers, accessories, etc., become caught in any moving sections of the unit.
The moving sections of the unit are the rollers and a gear. There is a separation roller and a document feed roller which are rotated
by the document feed motor. A gear rotates the two rollers. Be careful not to touch them with your hands, especially when the unit
is operating.
1.3.2. Live Electrical Sections
All the electrical sections of the unit supplied with AC power by the AC power cord are live.
Never disassemble the unit for service with the AC power supply plugged in.
CAUTION:
AC voltage is supplied to the primary side of the power supply unit. Therefore, always unplug the AC power cord before disassembling for service.
1.4. Service Precautions
1.4.1. Precautions to Prevent Damage from Static Electricity
Electrical charges accumulate on a person. For instance, clothes rubbing together can damage electric elements or change their
electrical characteristics. In order to prevent static electricity, touch a metallic part that is grounded to release the static electricity.
Never touch the electrical sections such as the power supply unit, etc.
6
KX-MB1500UCB
2Warning
2.1. About Lead Free Solder (PbF: Pb free)
Note:
In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that contains lead.
We will use PbF solder when discussing the lead free solder used in our manufacturing process which is made from Tin, (Sn),
Silver, (Ag), and Copper, (Cu).
This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repair
work we suggest using the same type of solder although, with some precautions, standard Pb solder can also be used.
Caution
• PbF solder has a melting point that is 50° ~ 70° F, (3 0 ° ~ 40°C) higher than Pb solder. Please use a soldering iron with temperature control and adjust it to 700° ± 20° F, (370° ± 10°C). In case of using high temperature soldering iron, please be careful not to
heat too long.
• PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100°F, ( 6 00 °C).
• If you must use Pb solder on a PCB manufactured using PbF solder, remove as much of the original PbF solder as possible and
be sure that any remaining is melted prior to applying the Pb solder.
• When applying PbF solder to double layered boards, please check the component side for excess which may flow onto the
opposite side (See figure, below).
2.1.1. Suggested PbF Solder
There are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper,
(Sn+Ag+Cu), you can also use Tin and Copper, (Sn+Cu), or Tin, Zinc, and Bismuth, (Sn+Zn+Bi). Please check the manufacturer’s specific instructions for the melting points of their products and any precautions for using their product with other
materials.
The following lead free (PbF) solder wire sizes are recommended for service of this product: 0.3mm, 0.6mm and 1.0mm.
7
KX-MB1500UCB
2.2. Discarding of P. C. Board
When discarding P. C. Board, delete all personal information such as telephone directory and caller list or scrap P. C. Board.
2.3. Insulation Resistance Test
1. Unplug the power cord and short the two prongs of the plug with a jumper wire.
2. Turn on the power switch.
3. Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metal cabinet part
(screw heads, control shafts, bottom frame, etc.).
Note: Some exposed parts may be isolated from the chassis by design. These will read infinity.
4. If the measurement is outside the specified limits, there is a possibility of a shock hazard.
2.4. Battery Caution
CAUTION
Danger of explosion if the battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the
manufacturer. Dispose of used batteries according to the manufacturer’s Instructions.
The lithium battery is a critical component (type No.CR2354). Please observe for the proper polarity and the exact location when
replacing it and soldering the replacement litium battery in.
2.5. Laser Beam and Fuser Unit Section
• The printer of this unit utilizes a laser. Use of controls or adjustments or performance of procedures other than those specified
herein may result in hazardous radiation exposure.
• The fuser unit is inside of the unit and gets hot. Do not touch it when removing the jammed paper or cleaning the lower glass.
Fuser Unit
Laser Scanning Unit
* In case of this figure, this Laser Caution Label is located on the other side of the LSU.
Laser
Caution
Label
8
2.6. Note for Repairing
Caution
Please inform users of the danger of data being lost at the time of repair.
Data will be lost in the following situations.
1. When replacing the ROM ass'y.
2. When replacing the Main board ass'y.
3. When executing service mode #550 or #710. (Memory Clear)
There is a possibility of data loss in the following situations.
1. When removing a board.
2. When writing new software to ROM.
KX-MB1500UCB
9
KX-MB1500UCB
3 Specifications
Document Size: Max. 216 mm in width, Max. 297 mm in length
Effective Scanning Width: 208 mm
Effective Printing Width: Letter/ Legal: 208 mm
Scanning Density: Scanning resolution:
Photo resolution: 64-level
Scanner Type: Colour Contact Image Sensor
Printer Type: Laser printer
Operating Environment: 10°C-32.5°C, 20%-70% RH (Relative Humidity)
Dimensions: Approx. width 380 mm x depth 360 mm x height 203 mm
Mass (Weight): Approx. 9 kg
Power Consumption: Standby: Approx. 4 W
Power Supply: 220-240 V AC, 50/60 Hz
Memory Capacity (for operation and
storing memory):
Laser diode properties: Laser output: Max. 10 mW
Print Speed: A4: Approx. 18 ppm (pages per minute)
Printing Resolution: 600 x 600 dpi
Maximum Monthly Duty Cycle: 5,000 printed pages
CIS’s LED light properties: LED radiation output: Max. 1 mW
Product life: 30,000(Thirty thousand) pages or 5 years whichever comes first.
A4: 202 mm
Up to 600 × 1,200 dpi (Optical)
Up to 19,200 x 19,200 dpi (Interpolated)
Copy resolution:
Up to 600 × 600 dpi
Preheat: Approx. 55 W
Copy: Approx. 350 W
Maximum: Approx. 950 W (When the fuser lamp turns on)
32 MB
Wavelength: 760 nm-800 nm
Emission duration: Continuous
Letter: Approx. 19 ppm (pages per minute)
Wavelength:
Red 630 nm typical
Green 520 nm typical
Blue 465 nm typical
Emission duration: Continuous
Note:
• Design and specifications are subject to change without notice.
• The pictures and illustrations in these instructions may vary slightly from the actual product.
10
4 General/Introduction
4.1. Optional Accessories
KX-MB1500UCB
Model No. Description Specifications
KX-FAT400A7
KX-FAT410A7
*1
Prints about 1,800 pages at ISO/IEC 19752 standard page.
*2
Prints about 2,500 pages at ISO/IEC 19752 standard page.
Note:
• ISO/IEC 19752 standard is as follows:
- Environment: 23 ± 2°C / 50 ± 10% RH
- Print mode: Continuous printing
Replacement toner cartridge
Replacement toner cartridge (high capacity)
*1
1 toner cartridge
*2
1 toner cartridge
4.2. Translation Lists
4.2.1. Error Message (Display)
11
KX-MB1500UCB
5Features
5.1. General Features
General
LCD (Liquid Crystal Display) readout
Flat-Bed Multifunction Printer
Resolution: Standard/Fine/Super fine/Photo (64 level).
STANDARD: For printed or typewritten originals with normalsized characters.
FINE: For originals with small printing.
SUPER FINE: For originals with very small printing.
PHOTO: For originals containing photographs, shaded drawing, etc.
5.2. Hardware Requirements for Multi-Function Software
To use Multi-Function Station on your computer, the following are required:
Operating System:
Windows 2000 / Windows XP / Windows Vista / Windows 7
CPU:
Windows 2000: Pentium® or higher processor
Windows XP: Pentium or higher processor
Windows Vista / Windows 7: Pentium 4 or higher processor
RAM:
Windows 2000/Windows XP: 128 MB (256 MB or more recommended)
Windows Vista: 512 MB (1 GB or more recommended)
Windows 7: 1 GB (2 GB or more recommended)
Other Hardware:
CD-ROM drive
Hard disk drive with at least 600 MB of available space
USB interface
Other:
Internet Explorer
Warning:
• To assure continued emission limit compliance;
- use only shielded USB cable (Example: Hi-Speed USB 2.0 certified cable).
• To protect the unit, use only shielded USB cable in areas where thunderstorms occur.
®
5.0 or later
150-sheet paper capacity (64 g/m
Approx. 150 pages of memory transmission
Approx. 110 pages of memory reception
Enhanced Copier Function
Multi-copy function (up to 99 copies)
Enlargement and reduction
64-Level halftone
2
~ 75 g/m2)
12
6 Technical Descriptions
6.1. Connection Diagram
LCD
DB7
DB6
DB5
DB4ER / WRSV0
CN1
987654321
987654321
10
OPERATION PANEL BOARD
MIC
KX-MB1500UCB
VDD
VSS
123456789
CN2
DC FAN
MIC-
DG5VMIC+
THRM
KSTART
KTXD
KSCLK
OPERST
123456789
CN511
CN506
FANON
DG
1
2
CN509
A
1
1
CN510
XA
2
2
XB
3
3
B
4
4
FB
MOTOR
NAMENAMENo
NAMENAMENo
11NoDGSIG12
11NoDGSIG12
VREF93. 3V10
VREF93. 3V10
SI7CNT8
SI7CNT8
CLK5DG6
CLK5DG6
LED_G3VLED4
LED_G3VLED4
1
LED_BLED_R2
1
LED_BLED_R2
CISMODULECISMODULE
POWER SW
REGISTER
CLUTCH
PICKUP
SOLENOID
MAIN
MOTOR
NEUTRAL
AC INLET
LIVE
TO
PC/USB
CN300
1 4 2 31 4 2
3
NAMENAMENo
NAMENAMENo
2NoD䋭VBUS1
2NoD䋭VBUS1
4
GNDD+3
4
GNDD+3
MAIN BOARD
CN54
REG
DG
PICK
DG
1B
1A
2A
2B
CN55
CN53
CN52
1
2
3
4
5
6
7
1
2
3
4
SNPICK
SNREG
DG
2B
2A
1A
1B
CN502
1
2
3
4
5
6
7
POLCLK
POLCLK
12345
123451234512345
123451234
XREADY
POLONDG24V
XREADY
POLONDG24V
5
LSU
LSU
CN500CN501
CN500CN501
1234567
1234567123456
DG
DG
5VLD
5VLD
XHSYNC
XHSYNC
CN508
1234567
7
XLDEN
XLDEN
XAPC
XVIDEO
DG
XAPC
XVIDEO
DG
8
䋭
PTOP
TNR
5V
5VLD
REG
BATTERY
GND
CN1
CN505
1234567
DEV
TRS
F-USE
1234567
CN504
䋭
1
1
HTRCTL
2
2
5V
3
3
GND
4
4
GND
5
5
24V
6
6
24V
7
7
CN503
THRM1
1
3.3V
2
POUT
3
GND
4
8
GND
HVFUSE
24V
CHG
䋭
8
CN101
1
1
2
2
3
3
4
4
5
5
6
6
7
7
PSU COVER
CN57
1
EXIT SENSOR
2
3
4
THERMOSTAT THERMOSTAT
TRA
DRUM
TONER
SENSOR
IC53
5V Interlock
Switch
SW50
CN50
1234567
24V Interlock
Switch
SW51
8
CN51
24VIL
1
2
24V
3
CN59
TNR
1
GND
2
5V
3
CN56
REGISTERS
ENSOR
1
2
3
IC51
PTOP
SENSOR
IC50
LIFE
DEV
CN2
DEVELOPING
HVPS
TONER SUPPLY
ROLLER
ROLLER
CHG
SMPS
IC52
CN58
1
2
THERMISTOR
HEAT LAMP
TRANSCRIPTION
CN1
121
2
CN2
121
2
ROLLER
OPC
DRUM
THRM1
DG
HEAT LAMP
PE
FUSER
UNIT
CN300
DRUM UNIT
13
KX-MB1500UCB
6.2. General Block Diagram
MAIN UNIT
SOC (IC300)
This custom IC is used for general MFP operations.
1) CPU ARM9 operating at 250MHz.
2) SDRAM Controller Controls SDRAM Memory.
3) USB Controller with PHY Apply to USB2.0 HS
4) Scanner I/F Controls the CIS and AFE, and process the scan images.
5) LSU I/F Controls the polygon motor and outputs the VIDEO signal to LSU.
6) MOTOR I/F Controls the DC motor and Stepping Motor.
7) FAN I/F Controls FAN MOTOR and detect the rotation of FAN MOTOR.
8) OPERATION PANEL I/F Serial interface with Operation Panel.
9) SENSOR I/F Detects the sensor signal.
10) I/O PORT I/O Port Interface.
11) A/D, D/A converter Sends beep tones, etc.
Convert the analog signal to the digital signal.
ROM (IC402)
This 8MB FLASH ROM contains all of the program instructions on the unit operations.
SYNCHRONOUS DYNAMIC RAM (IC400)
This 256Mbit SDRAM is used for CPU work and receiving memory and page memory.
POWER SUPPLY
DC-DC converters generate 3.3V and 1.2V for system power.
Regurator generates 5V for peripheral devices.
READ SECTION
CIS Unit to read transmitted documents.
Scan data is converted by AFE(IC503).
MOTOR
This model has 2 stepping motors.
IC600 drives the stepping motor for printing.
IC502 drives the stepping motor for CIS carriage.
LSU
Forms the images on the OPC DRUM by rotating polygon motor and reflecting the laser beam against polygon.
SENSORS
Composed of 2 switches and 3 sensors.
POWER SUPPLY BOARD
Supplies +24V and +5V to the Main unit and controls the Heat Lamp.
HIGH VOLTAGE POWER SUPPLY BOARD
Supplies bias need for the printing operation: bias of the DRUM, Developing and Transcription.
FIXING UNIT
Composed heat lamp, thermistor and thermostats.
14
Heater
Thermostat
KX-MB1500UCB
AC
AC cord setAC cord set
Thermostat
Power SW
AC inlet
AFE
Flat Bed
Flat Bed
Color CIS
Thermistor
(Room)
Ope
2Line
2Line
2Line
Carriage motor
G/A
LCD
LCD
LCD
FFC 12
JST4
AMP 9
(64Mbit)
Sirius
SDRAM
Lite
)
(256Mbit
AMP 7(Blue)
(FB)
Motor
Driver
FLASH
Motor
Driver
Main Board
AMP 7
(Main )
JST2
5V
3.3V/1.2V
AMP 5
AMP 4
DC-DC
AMP 7
SMPS
USB
AMP 8(Blue)
HVPS
HVPS
AMP 3(Blue)
AMP 8
24V Interlock
PTOP Sensor
Operation Panel Board
series System Schematic
series System Schematic
1520
1520
MB
MB
JST2
AMP 2
Regist Clutch
AMP 4
FAN
Main motor
Pick Up Solenoid
LSU
EXIT Sensor
JST2
Thermistor
(Heater)
5V Interlock
AMP 3
Hall
IC
Toner Sensor
Regist Sensor
15
KX-MB1500UCB
6.3. Main Board Section
6.3.1. Data Flow
[PC Scan]
CIS unit
1. An analog image data is output from CIS unit to IC503.
IC503 decode the analog data to digital data, and output to IC300.
Scanner I/F in IC300 process image data and store it in IC400
through SDRAM I/F.
2. If necessary, the data is compressed via DSP.
3. The data is output to PC through the USB I/F.
PC
USB
[PC print]
CN30 0
Main Board
USB
I/F
CPU
CN510
AFE
Scanner
I/F
CIS unit
IC503
IC300
Print I/F
SDRAM
I/F
DSPJBIG
1. The print data is output from PC through USB
and pass the USB I/F in IC300.
then the data is stored in IC400 through SDRAM I/F.
2. Print I/F retrieve the data from IC400 and output it to LSU.
CN500
IC400
SDRAM
LSU
PC
USB
Main Board
CN30 0
USB
I/F
CPU
16
CN510
AFE
Scanner
IC503
IC300
DSPJBIG
Print I/F
SDRAM
I/F
I/F
CN500
IC400
SDRAM
LSU
[Copy]
KX-MB1500UCB
1. An analog image data is output from CIS unit to IC503.
IC503 decode the analog data to digital data, and output to IC300.
Scanner I/F in IC300 process image data and store it in IC400
through SDRAM I/F.
2. If necessary, the data is compressed via JBIG.
3. Print I/F retrieve the data from IC400 and output it to LSU.
CIS unit
PC
USB
Main Board
CN30 0
USB
I/F
CPU
CN510
AFE
Scanner
I/F
IC503
DSPJBIG
Print I/F
IC300
SDRAM
I/F
LSU
CN500
IC400
SDRAM
17
KX-MB1500UCB
Description of Pin Distribution (IC300) SOC (System On Chip)
PIN NO. PinName I/O POWER SUPPLY VOLTAGE EXPLANATION
A02 LEDONB O 3.3V SCANNER INTERFACE
A03 NCCDON O 3.3V SCANNER INTERFACE
A04 AFEMCLK O 3.3V SCANNER INTERFACE
A05 NCCDCP O 3.3V NOT USED
A06 CCDCLK O 3.3V NOT USED
A07 PIO29 O 3.3V OPERATION PANEL INTERFACE
A08 PIO57 O 3.3V CARRIAGE MOTOR INTERFACE
A09 PIO53 O 3.3V CARRIAGE MOTOR INTERFACE
A10 PIO50 O 3.3V CARRIAGE MOTOR INTERFACE
A11 PIO46 O 3.3V FAN1 CONTROL
A12 PIO42 O 3.3V DC MOTOR INTERFACE
A13 NFRCE O 3.3V FLASH MEMORY CHIP SELECT
A14 FRMD0 I/O 3.3V FLASH MEMORY DATA BUS 0
A15 FRMD3 I/O 3.3V FLASH MEMORY DATA BUS 3
A16 FRMD7 I/O 3.3V FLASH MEMORY DATA BUS 7
A17 FRMA3 O 3.3V FLASH MEMORY ADDRESS BUS 3
A18 FRMA6 O 3.3V FLASH MEMORY ADDRESS BUS 6
A19 FRMA10 O 3.3V FLASH MEMORY ADDRESS BUS 10
A20 THRMAVDD - 3.3V POWER SUPPLY
A21 FRMA11 O 3.3V FLASH MEMORY ADDRESS BUS 11
A22 FRMA15 O 3.3V FLASH MEMORY ADDRESS BUS 15
A23 FRMA17 O 3.3V FLASH MEMORY ADDRESS BUS 17
A24 FRMA20 O 3.3V FLASH MEMORY ADDRESS BUS 20
A25 FRMA22 O 3.3V FLASH MEMORY ADDRESS BUS 22
AA01 SDMD8 I/O 3.3V SDRAM DATA BUS 8
AA02 SDMD9 I/O 3.3V SDRAM DATA BUS 9
AA03 SDMA7 O 3.3V SDRAM ADDRESS BUS 7
AA04 SDMA6 O 3.3V SDRAM ADDRESS BUS 6
AA23 VDD1.2 - 1.2V POWER SUPPLY
AA24 AFERST O 3.3V NCU INTERFACE
AA25 RING I 3.3V NCU INTERFACE
AA26 EXTINT I 3.3V NCU INTERFACE
AB01 SDMD10 I/O 3.3V SDRAM DATA BUS 10
AB02 SDMD11 I/O 3.3V SDRAM DATA BUS 11
AB03 SDMA5 O 3.3V SDRAM ADDRESS BUS 5
AB04 VDD1.2 - 1.2V POWER SUPPLY
AB23 VSS - GND GND
AB24 BTXD O 3.3V NCU INTERFACE
AB25 BRXD I 3.3V NCU INTERFACE
AB26 AFECLK O 3.3V NCU INTERFACE
AC01 SDMD12 I/O 3.3V SDRAM DATA BUS 12
AC02 SDMD13 I/O 3.3V SDRAM DATA BUS 13
AC03 SDMA4 O 3.3V SDRAM ADDRESS BUS 4
AC04 VSS - GND GND
AC05 VSS - GND GND
AC06 VDD1.2 - 1.2V POWER SUPPLY
AC07 TXD0 O 3.3V ETHERNET INTERFACE
AC08 TX_ER O 3.3V ETHERNET INTERFACE
AC09 RXD1 I 3.3V ETHERNET INTERFACE
AC10 VDD3.3 - 3.3V POWER SUPPLY
AC11 TEST I 3.3V NOT USED
AC12 USBREXT I 3.3V USB INTERFACE
AC13 VDD1.2 - 1.2V POWER SUPPLY
AC14 VDD3.3 - 3.3V POWER SUPPLY
AC15 USBXIN I 3.3V CRYSTAL(12MHz) INPUT
AC16 LSI_SCAN_ENABLE I 3.3V NOT USED
AC17 VDD1.2 - 1.2V POWER SUPPLY
AC18 NWDTRST O 3.3V WATCH DOG TIMER RESET OUTPUT
AC19 LSI_TN I 3.3V NOT USED
AC20 PSCIO2 I 3.3V INPUT PORT (FANDET1)
AC21 PSCIO6 O 3.3V NOT USED
AC22 VDD1.2 - 1.2V POWER SUPPLY
AC23 VSS - GND GND
AC24 ATXD O 3.3V NCU INTERFACE
AC25 BBITCLK I/O 3.3V NCU INTERFACE
18
PIN NO. PinName I/O POWER SUPPLY VOLTAGE EXPLANATION
AC26 BSPCLK I/O 3.3V NCU INTERFACE
AD01 SDMD14 I/O 3.3V SDRAM DATA BUS 14
AD02 SDMD15 I/O 3.3V SDRAM DATA BUS 15
AD03 VSS - GND GND
AD04 NBATRST I 3.3V BATTERY RESET INPUT
AD05 VDD2RTC - 1.2V POWER SUPPLY
AD06 CRS I 3.3V ETHERNET INTERFACE
AD07 TXD1 O 3.3V ETHERNET INTERFACE
AD08 RX_DV I 3.3V ETHERNET INTERFACE
AD09 RXD2 I 3.3V ETHERNET INTERFACE
AD10 RX_ER I 3.3V ETHERNET INTERFACE
AD11 CLKSEL I 3.3V NOT USED
AD12 USBVSSA33_BIAS - GND GND
AD13 USBVSSA33 - GND GND
AD14 USBVDDA12_SQ - 1.2V POWER SUPPLY
AD15 USBVSSA12 - GND GND
AD16 LSI_TRSTN I 3.3V NOT USED
AD17 LSI_TDO O 3.3V NOT USED
AD18 NRST I 3.3V SYSTEM RESET INPUT
AD19 HTRCTL O 3.3V HEATER CONTROL
AD20 PSCIO3 I 3.3V INPUT PORT (POUT)
AD21 PSCIO7 O 3.3V NOT USED
AD22 PSCIO15 I 3.3V INPUT PORT (RPS)
AD23 NC - - NOT USED
AD24 VSS - GND GND
AD25 ASPCLK I/O 3.3V NCU INTERFACE
AD26 ARXD I 3.3V NCU INTERFACE
AE01 SDLDM1 O 3.3V SDRAM DQML1
AE02 VSS - GND GND
AE03 SYSPLLVSS1 - GND GND
AE04 RTCCLKOUT O 3.3V CRYSTAL(32.768KHz) OUTPUT
AE05 RTCPWRDWN I 3.3V RTC POWER DOWN
AE06 TX_CLKI I 3.3V ETHERNET INTERFACE
AE07 TXD2 O 3.3V ETHERNET INTERFACE
AE08 RX_CLKI I 3.3V ETHERNET INTERFACE
AE09 RXD3 I 3.3V ETHERNET INTERFACE
AE10 MDC O 3.3V ETHERNET INTERFACE
AE11 NC - - NOT USED
AE12 USBID O 3.3V NOT USED
AE13 USBDM I/O 3.3V USB INTERFACE
AE14 USBVSSA12_SQ - GND GND
AE15 USBVDDA12PLL - 1.2V POWER SUPPLY
AE16 USBVDDA12 - 1.2V POWER SUPPLY
AE17 LSI_TDI I 3.3V NOT USED
AE18 LSI_PROCMON O 3.3V NOT USED
AE19 LSI_IDDT I 3.3V NOT USED
AE20 PSCIO1 I 3.3V INPUT PORT (PICK)
AE21 PSCIO5 O 3.3V NOT USED
AE22 PSCIO13 I 3.3V INPUT PORT (TNR)
AE23 MDMCLKOUT O 3.3V CRYSTAL(24.576MHz) OUTPUT
AE24 MDMPLLVDD - 3.3V POWER SUPPLY
AE25 VSS - GND GND
AE26 ABITCLK I/O 3.3V NCU INTERFACE
AF02 SYSPLLVDD1 - 3.3V POWER SUPPLY
AF03 VDD3.3OSC - 3.3V POWER SUPPLY
AF04 RTCCLKIN I 3.3V CRYSTAL(32.768KHz) INPUT
AF05 COL I 3.3V ETHERNET INTERFACE
AF06 TX_EN O 3.3V ETHERNET INTERFACE
AF07 TXD3 O 3.3V ETHERNET INTERFACE
AF08 RXD0 I 3.3V ETHERNET INTERFACE
AF09 MDIO I/O 3.3V ETHERNET INTERFACE
AF10 MGTINT I 3.3V ETHERNET INTERFACE
AF11 USBVBUS O 3.3V USB INTERFACE
AF12 USBVDDA33_BIAS - 3.3V POWER SUPPLY
AF13 USBDP I/O 3.3V USB INTERFACE
AF14 USBVDDA33 - 3.3V POWER SUPPLY
AF15 USBVSSA12PLL - GND GND
KX-MB1500UCB
19
KX-MB1500UCB
PIN NO. PinName I/O POWER SUPPLY VOLTAGE EXPLANATION
AF16 USBXOUT I 3.3V CRYSTAL(12MHz) OUTPUT
AF17 LSI_TMS I 3.3V NOT USED
AF18 LSI_TCK I 3.3V NOT USED
AF19 LSI_CW_TAP I 3.3V NOT USED
AF20 PSCIO0 I 3.3V INPUT PORT (REGIST)
AF21 PSCIO4 O 3.3V NOT USED
AF22 PSCIO12 I 3.3V INPUT PORT (POUT)
AF23 PSCIO14 I 3.3V INPUT PORT (DOCU)
AF24 MDMCLKIN I 3.3V CRYSTAL(24.576MHz) INPUT
AF25 MDMPLLVSS - GND GND
B01 AFEADC0 I 3.3V NOT USED
B02 VSS - GND GND
B03 LEDONG O 3.3V SCANNER INTERFACE
B04 AFERSMP O 3.3V NOT USED
B05 AFEVSMP O 3.3V SCANNER INTERFACE
B06 NCCDRS O 3.3V SCANNER INTERFACE
B07 PIO30 I/O 3.3V OPERATION PANEL INTERFACE
B08 MMPWR O 3.3V NOT USED
B09 PIO54 O 3.3V CARRIAGE MOTOR INTERFACE
B10 PIO51 O 3.3V CARRIAGE MOTOR INTERFACE
B11 PIO47 O 3.3V NOT USED
B12 PIO43 O 3.3V DC MOTOR INTERFACE
B13 NFROE O 3.3V FLASH MEMORY CHIP OUTPUT ENABLE
B14 FRMD1 I/O 3.3V FLASH MEMORY DATA BUS 1
B15 FRMD4 I/O 3.3V FLASH MEMORY DATA BUS 4
B16 FRMA0 O 3.3V FLASH MEMORY ADDRESS BUS 0
B17 FRMA4 O 3.3V FLASH MEMORY ADDRESS BUS 4
B18 FRMA7 O 3.3V FLASH MEMORY ADDRESS BUS 7
B19 THRMAVSS - GND GND
B20 TONE O 3.3V ANALOG(TONE) OUTPUT
B21 FRMA12 O 3.3V FLASH MEMORY ADDRESS BUS 12
B22 FRMA16 O 3.3V FLASH MEMORY ADDRESS BUS 16
B23 FRMA19 O 3.3V FLASH MEMORY ADDRESS BUS 19
B24 FRMA21 O 3.3V FLASH MEMORY ADDRESS BUS 21
B25 VSS - GND GND
B26 DOTPLLVSS - GND GND
C01 AFEADC3 I 3.3V NOT USED
C02 AFEADC1 I 3.3V NOT USED
C03 VSS - GND GND
C04 LEDONR O 3.3V SCANNER INTERFACE
C05 OEB O 3.3V NOT USED
C06 CCDSH O 3.3V SCANNER INTERFACE
C07 PIO31 O 3.3V OPERATION PANEL INTERFACE
C08 OPMPWR O 3.3V NOT USED
C09 PIO55 O 3.3V CARRIAGE MOTOR INTERFACE
C10 PIO52 O 3.3V CARRIAGE MOTOR INTERFACE
C11 PIO49 O 3.3V OUTPUT PORT(HSSPMUTE)
C12 PIO45 O 3.3V DC MOTOR INTERFACE
C13 NFRWE O 3.3V FLASH MEMORY CHIP WRITE ENABLE
C14 FRMD2 I/O 3.3V FLASH MEMORY DATA BUS 2
C15 FRMD6 I/O 3.3V FLASH MEMORY DATA BUS 6
C16 FRMA2 O 3.3V FLASH MEMORY ADDRESS BUS 2
C17 FRMA5 O 3.3V FLASH MEMORY ADDRESS BUS 5
C18 FRMA9 O 3.3V FLASH MEMORY ADDRESS BUS 9
C19 THRMSTR0 I 3.3V ANALOG INPUT(THERMISTOR)
C20 TONEAVDD - 3.3V POWER SUPPLY
C21 FRMA14 O 3.3V FLASH MEMORY ADDRESS BUS 14
C22 FRMA18 O 3.3V FLASH MEMORY ADDRESS BUS 18
C23 FRMA23 O 3.3V FLASH MEMORY ADDRESS BUS 23
C24 VSS - GND GND
C25 DOTPLLVDD - 3.3V POWER SUPPLY
C26 DOTCLKIN I 3.3V CRYSTAL(20MHz) INPUT
D01 AFEADC5 I 3.3V SCANNER INTERFACE
D02 AFEADC4 I 3.3V SCANNER INTERFACE
D03 AFEADC2 I 3.3V NOT USED
D04 VSS - GND GND
D05 VSS - GND GND
20
PIN NO. PinName I/O POWER SUPPLY VOLTAGE EXPLANATION
D06 VDD1.2 - 1.2V POWER SUPPLY
D07 PIO32 O 3.3V OPERATION PANEL INTERFACE
D08 CRMPWR O 3.3V MOTOR CURRENT CONTROL
D09 PIO56 O 3.3V NOT USED
D10 VDD1.2 - 1.2V POWER SUPPLY
D11 PIO48 O 3.3V NOT USED
D12 PIO44 O 3.3V DC MOTOR INTERFACE
D13 VDD3.3 - 3.3V POWER SUPPLY
D14 VDD1.2 - 1.2V POWER SUPPLY
D15 FRMD5 I/O 3.3V FLASH MEMORY DATA BUS 5
D16 FRMA1 O 3.3V FLASH MEMORY ADDRESS BUS 1
D17 VDD3.3 - 3.3V POWER SUPPLY
D18 FRMA8 O 3.3V FLASH MEMORY ADDRESS BUS 8
D19 THRMSTR1 I 3.3V ANALOG INPUT(THERMISTOR)
D20 TONEAVSS - GND GND
D21 FRMA13 O 3.3V FLASH MEMORY ADDRESS BUS 13
D22 VDD1.2 - 1.2V POWER SUPPLY
D23 VSS - GND GND
D24 NC - - NOT USED
D25 DOTCLKOUT O 3.3V CRYSTAL(20MHz) OUTPUT
D26 PIO66 O 3.3V NOT USED
E01 SDUDM0 O 3.3V SDRAM DQMU0
E02 AFEADC7 I 3.3V SCANNER INTERFACE
E03 AFEADC6 I 3.3V SCANNER INTERFACE
E04 VSS - GND GND
E23 VDD1.2 - 1.2V POWER SUPPLY
E24 FRMA24 O 3.3V FLASH MEMORY ADDRESS BUS 24
E25 PIO65 O 3.3V NOT USED
E26 PIO64 O 3.3V NOT USED
F01 SDMD16 I/O 3.3V SDRAM DATA BUS 16
F02 SDMD17 I/O 3.3V SDRAM DATA BUS 17
F03 AFESIFCLK O 3.3V SCANNER INTERFACE
F04 VDD1.2 - 1.2V POWER SUPPLY
F23 PIO24 I 3.3V LSU INTERFACE
F24 PIO61 O 3.3V OUTPUT PORT(SPMUTE)
F25 PIO60 O 3.3V NOT USED
F26 PIO3 O 3.3V LSU INTERFACE
G01 SDMD18 I/O 3.3V SDRAM DATA BUS 18
G02 SDMD19 I/O 3.3V SDRAM DATA BUS 19
G03 AFESIFDIN I 3.3V SCANNER INTERFACE
G04 AFESIFEN O 3.3V SCANNER INTERFACE
G23 PSCIO24 I 3.3V LSU INTERFACE
G24 PIO2 O 3.3V LSU INTERFACE
G26 PIO58 O 3.3V OUTPUT PORT(CIDRLY)
H01 SDMD20 I/O 3.3V SDRAM DATA BUS 20
H02 SDMD21 I/O 3.3V SDRAM DATA BUS 21
H03 NSDCS2 O 3.3V SDRAM CHIP SELECT 2
H04 AFESIFDOUT O 3.3V SCANNER INTERFACE
H23 PIO63 O 3.3V LSU INTERFACE
H24 PIO62 O 3.3V LSU INTERFACE
H25 PIO28 O 3.3V NOT USED
H26 PIO21 O 3.3V LSU INTERFACE
J01 SDMD22 I/O 3.3V SDRAM DATA BUS 22
J02 SDMD23 I/O 3.3V SDRAM DATA BUS 23
J03 SDMA3 O 3.3V SDRAM ADDRESS BUS 3
J04 SDMA2 O 3.3V SDRAM ADDRESS BUS 2
J23 PIO6 O 3.3V HIGH VOLTAGE UNIT INTERFACE
J24 PIO27 O 3.3V NOT USED
J25 PIO5 O 3.3V HIGH VOLTAGE UNIT INTERFACE
J26 PIO4 O 3.3V HIGH VOLTAGE UNIT INTERFACE
K01 VSS - GND GND
K02 SDCLK2 O 3.3V SDRAM CLOCK 2
K03 VSS - GND GND
K04 VDD3.3 - 3.3V POWER SUPPLY
K23 VDD1.2 - 1.2V POWER SUPPLY
K24 PIO41 O 3.3V NOT USED
K25 PIO40 O 3.3V NOT USED
KX-MB1500UCB
21
KX-MB1500UCB
PIN NO. PinName I/O POWER SUPPLY VOLTAGE EXPLANATION
K26 PIO39 O 3.3V NOT USED
L01 SDMD24 I/O 3.3V SDRAM DATA BUS 24
L02 SDMD25 I/O 3.3V SDRAM DATA BUS 25
L03 SDMA1 O 3.3V SDRAM ADDRESS BUS 1
L04 SDMAÇO O 3.3V SDRAM ADDRESS BUS 0
L11 VSS - GND GND
L12 VSS - GND GND
L13 VSS - GND GND
L14 VSS - GND GND
L15 VSS - GND GND
L16 VSS - GND GND
L23 PIO37 I 3.3V INPUT PORT (RING)
L24 PIO38 O 3.3V NOT USED
L25 PIO36 O 3.3V NOT USED
L26 PIO35 O 3.3V NOT USED
M01 SDMD26 I/O 3.3V SDRAM DATA BUS 26
M02 SDMD27 I/O 3.3V SDRAM DATA BUS 27
M03 SDMA10 O 3.3V SDRAM ADDRESS BUS 10
M04 SDBA1 O 3.3V SDRAM BANK ADDRESS 1
M11 VSS - GND GND
M12 VSS - GND GND
M13 VSS - GND GND
M14 VSS - GND GND
M15 VSS - GND GND
M16 VSS - GND GND
M23 PIO33 O 3.3V NOT USED
M24 PIO34 O 3.3V NOT USED
M25 PIO26 O 3.3V NOT USED
M26 PIO25 O 3.3V OUTPUT PORT(CNGMUTE)
N01 SDMD28 I/O 3.3V SDRAM DATA BUS 28
N02 SDMD29 I/O 3.3V SDRAM DATA BUS 29
N03 SDBA0 O 3.3V SDRAM BANK ADDRESS 0
N04 VDD1.2 - 1.2V POWER SUPPLY
N11 VSS - GND GND
N12 VSS - GND GND
N13 VSS - GND GND
N14 VSS - GND GND
N15 VSS - GND GND
N16 VSS - GND GND
N23 VDD3.3 - 3.3V POWER SUPPLY
N24 PIO23 O 3.3V NOT USED
N25 PIO22 O 3.3V NOT USED
N26 PIO20 O 3.3V NOT USED
P01 SDMD30 I/O 3.3V SDRAM DATA BUS 30
P02 SDMD31 I/O 3.3V SDRAM DATA BUS 31
P03 NSDCS O 3.3V SDRAM CHIP SELECT 1
P04 VDD3.3 - 3.3V POWER SUPPLY
P11 VSS - GND GND
P12 VSS - GND GND
P13 VSS - GND GND
P14 VSS - GND GND
P15 VSS - GND GND
P16 VSS - GND GND
P23 VDD1.2 - 1.2V POWER SUPPLY
P24 PIO16 I 3.3V INPUT PORT
P25 PIO17 I 3.3V INPUT PORT
P26 PIO18 I 3.3V HIGH VOLTAGE UNIT INTERFACE
R01 SDUDM1 O 3.3V SDRAM DQMU1
R02 SDLDM0 O 3.3V SDRAM DQML0
R03 BZVDD33 - 3.3V POWER SUPPLY
R04 BZRST33 - 3.3V POWER SUPPLY
R11 VSS - GND GND
R12 VSS - GND GND
R13 VSS - GND GND
R14 VSS - GND GND
R15 VSS - GND GND
R16 VSS - GND GND
22
PIN NO. PinName I/O POWER SUPPLY VOLTAGE EXPLANATION
R23 PIO13 O 3.3V NOT USED
R24 PIO12 O 3.3V NOT USED
R25 PIO14 O 3.3V NOT USED
R26 PIO15 I 3.3V INPUT PORT
T01 SDMD0 I/O 3.3V SDRAM DATA BUS 0
T02 SDMD1 I/O 3.3V SDRAM DATA BUS 1
T03 NSDCAS O 3.3V SDRAM CAS
T04 NSDRAS O 3.3V SDRAM RAS
T11 VSS - GND GND
T12 VSS - GND GND
T13 VSS - GND GND
T14 VSS - GND GND
T15 VSS - GND GND
T16 VSS - GND GND
T23 PIO9 O 3.3V OUTPUT PORT(SNPICK)
T24 PIO8 O 3.3V NOT USED
T25 PIO10 O 3.3V NOT USED
T26 PIO11 O 3.3V OUTPUT PORT(SNREG)
U01 SDMD2 I/O 3.3V SDRAM DATA BUS 2
U02 SDMD3 I/O 3.3V SDRAM DATA BUS 3
U03 NSDWE O 3.3V SDRAM WRITE ENABLE
U04 VDD1.2 - 1.2V POWER SUPPLY
U23 VDD3.3 - 3.3V POWER SUPPLY
U24 PIO0 I 3.3V INPUT PORT (HOOK)
U25 PIO1 O 3.3V OUTPUT PORT(EXTRLY)
U26 PIO7 O 3.3V NOT USED
V01 SDMD4 I/O 3.3V SDRAM DATA BUS 4
V02 SDMD5 I/O 3.3V SDRAM DATA BUS 5
V03 SDCKE O 3.3V SDRAM CLOCK ENABLE
V04 SDMA12 O 3.3V SDRAM ADDRESS BUS 12
V23 PSCIO20 I 3.3V INPUT PORT (CIS HOME)
V24 PSCIO21 O 3.3V NOT USED
V25 PSCIO22 O 3.3V NOT USED
V26 PSCIO23 O 3.3V NOT USED
W01 SDMD6 I/O 3.3V SDRAM DATA BUS 6
W02 SDMD7 I/O 3.3V SDRAM DATA BUS 7
W03 SDMA11 O 3.3V SDRAM ADDRESS BUS 11
W04 SDMA9 O 3.3V SDRAM ADDRESS BUS 9
W23 PSCIO16 O 3.3V NOT USED
W24 PSCIO17 I 3.3V INPUT PORT (FANDET2)
W25 PSCIO18 I 3.3V INPUT PORT (TOPCVR)
W26 PSCIO19 I 3.3V INPUT PORT (PSTART)
Y01 VSS - GND GND
Y02 SDCLK O 3.3V SDRAM CLOCK 1
Y03 SDMA8 O 3.3V SDRAM ADDRESS BUS 8
Y04 VSS - GND GND
Y23 AFESEL0 I 3.3V NCU INTERFACE
Y24 AFESEL1 I 3.3V NCU INTERFACE
Y25 EXMDMCS O 3.3V NOT USED
Y26 DP O 3.3V NCU INTERFACE
KX-MB1500UCB
23
KX-MB1500UCB
6.4. CIS Control Section
The scanning block of this device consists of a control circuit and a CIS (contact image sensor), and AFE(Analog Front End) include
A/D Converter.
When an original document is inserted and the start button pressed, pin A3 of IC300 goes to a low level and the transistor Q518
turns on.
This applies voltage to the CIS. The CIS is driven by each of the signals (CCDSH, CCDCLK, Resolution) output from IC300.
The original image illuminated by the LED to output an analog image signal.
The analog image signal is input to the AFE on VINP(20pin of IC503) and converted into 16-bit data by the A/D converter inside
IC503. Then this signal undergoes digital processing in order to obtain a high-quality image.
24
KX-MB1500UCB
Resolution
The CIS can change the resolution, 300 dpi mode or 600 dpi mode. If RESOLUTION signal is High level, CIS operates 600 dpi
mode.
The other case is 300 dpi mode.
Operation CIS Resolution
300dpi 600dpi
COPY Photo/Text, Text Photo
PC SCAN ~300 X 300 400 X 400~
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KX-MB1500UCB
6.5. Motor Drive Section
6.5.1. Engine Motor Control Circuit
1. Functions
All driving forces of printer engine part are supplied by tis engine motor.
Engine motor is controlled so as to rotate at constant speed during printing and copying.
2. Block Diagram of Main motor Drive circuit
Main motor drive circuit consists of motor driver IC and Current control circuit.
In order to start the motor rotation, following 3 signals are supplied from IC300.
3. Explanation of each circuit
1. Motor driver
IC600 is the constant current, Bi-polar stepping motor drive IC.
This IC can drive up to 2A/phase and support up to 2W1-2 phase excitation.
When "enable" signal (IC600_pin2) becomes "L", motor driver is activated, and motor current are supplied from
IC600_pin1, pin18, pin21 and pin22 to drive the motor coil.
Excitation type is selected by the logic level of "MS1"(IC600_pin8) and S2"(IC600_pin9).
The operation of IC600 is shown in below table corresponding to each logic level of enable, MS1, and MS2.
Enable
(IC600_pin2)
H - - Disable Motor stop
L L L 2 Phase Excitation Full speed operation
L H L F1-2 Excitation Half speed operation
L L H W1-2 Excitation Not used
L H H 2W1-2 Excitation Not used
MS1
(IC600_pin8)
MS2
(IC600_pin9)
Excitation type Motor Operation
After setting the above signals, clock signal is supplied from IC300_pinA12 to IC600_pin14.
Whenever clock signal is supplied, current value and direction supplied to Main motor change according to the
excitation type which is determined by above signal levels.
The clock frequency also determines the motor speed.
2. Motor current control circuit
According to the rotation speed, motor current is controlled for appropriate value.
In order to control the motor current, Ref voltage of IC600 is controlled.
When Ref voltage is high, motor current is increased, and the voltage is low, motor current is decreased.
For the control of Ref voltage, PWM pulse is supplied from IC300_pinB8.
PWM pulse is integrated by R615 and C610.
Consequently PWM pulse is converted to DC voltage.
When duty of PWM pulse is high, Ref voltage is increased and when duty is low, Ref voltage is decreased.
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4. Explanation of each circuit
5. Timing chart and wave form of Main motors
1. 2-2 phase excitation (Full speed)
(1) Timing chart
KX-MB1500UCB
(2) Wave form
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KX-MB1500UCB
2. Flat torque 1-2 phase excitation (Half speed)
(1) Timing chart
(2) Wave form
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6.5.2. FB (Flat bed) motor drive circuit
1. General
FB motor drive circuit consists of "Motor driver", "Motor current control circuit" and "O.C.P(Over Current Protection) circuit"
FB motor feeds CIS unit in FB scan, FB copy.
A one step rotation of this motor feeds CIS unit 0.021mm.
2. Block Diagram of Scanner motor Drive circuit
KX-MB1500UCB
6.5.2.1. Motor driver
Motor driver IC502 can drive motors up to 0.8A/phase and support up to W1-2 phase excitation.
When "Power save" signal (IC502_pin20) becomes "H", motor driver is activated.
Stepping pulses are output from IC300 pins A9, B9, C9, A10, B10, and C10.
Frequency and pattern of these pulses determine the motor rotation speed and excitation mode respectively.
Corresponding to these pulses, current are supplied from IC502_pin4, pin6, pin7 and pin9 to each motor coil.
6.5.2.2. Motor current control circuit
1. Function
According to the scan speed, motor current is controlled for appropriate value.
For example, when scan speed is low, motor has enough driving force.
So to prevent the vibration and noise during motor rotation, motor drive current should be reduced.
When scan speed is high, motor needs much driving force. so much current should be supplied.
In order to control the motor current, Vref voltage of IC502 is controlled.
When Vref voltage is high, motor current is increased, and the voltage is low, motor current is reduced.
2. Circuit Diagram
Please refer to the circuit diagram shown in the block diagram of FB (Flat bed) motor drive circuit (P.29).
3. Circuit explanation
For the sake of Vref voltage control, PWM pulse is supplied from IC300_pinD8.
PWM pulse is integrated by R538, R539 and C764, then converted to DC voltage.
This DC voltage is supplied to Vref pin of IC502.
When duty of PWM pulse is high, Vref voltage is increased and when duty is low, Vref voltage is decreased.
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KX-MB1500UCB
4. Timing chart of current control
Following timing charts are the example of Vref voltage corresponding to PWM pulse duty.
6.5.2.3. O.C.P (Over Current Protection) circuit
1. Function
If motor driver can supply more than 15 watts, FB motors may become fire hazards.
To prevent the risk of fire, this circuit is provided.
2. Circuit Diagram
3. Circuit explanation
When the current supplied from 24V exceeds 0.44A, the voltage between two registers R575 and R578 becomes more than
0.6V (=0.44A*2.7ohm/2), consequently both Q515 and Q522 turn on.
If Q522 turns on, IC502_pin20 becomes "Low" level.
As a result IC502 is deactivated and motor currents are cut off.
So the current which IC502 can supply is limited to less than 0.44A and the wattage is also limited to less than 10.7W
(=0.44A*24V).
By limiting the wattage less than 15W, risk of fire hazard is eliminated.
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