KX-FL423RU - Panasonic Fax Service Manual (repair manual)

kx-fl423ru service manual
Model
KX-FL423RU
Pages
127
Size
10.1 MB
Type
PDF
Document
Service Manual
Brand
Device
Fax / COMPACT LASER FAX
File
kx-fl423ru.pdf
Date

Read Panasonic KX-FL423RU Service Manual online

ORDER NO. KMF0908245CE
Compact Laser Fax
Model No.
KX-FL423RU-B
KX-FL423RU-W
(Black / White version)
(for Russia)
2
KX-FL423RU-B / KX-FL423RU-W 
TABLE OF CONTENTS
PAGE
PAGE
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
1.3.3. Laser Beam and Fuser Unit Section--------------7
1.4. Service Precautions ---------------------------------------7
1.4.1. Precautions to Prevent Damage From
Static Electricity ----------------------------------------7
1.5. For Best Performance-------------------------------------7
2 Warning --------------------------------------------------------------8
2.1. About Lead Free Solder (PbF: Pb free) --------------8
2.1.1. Suggested PbF Solder -------------------------------8
2.2. Discarding of P. C. Board --------------------------------8
2.3. Insulation Resistance Test  ------------------------------9
2.4. Battery Caution ---------------------------------------------9
3 Specifications ---------------------------------------------------- 10
4 General/Introduction ------------------------------------------- 11
4.1. Optional Accessories------------------------------------ 11
4.2. Translation Lists ------------------------------------------ 11
4.2.1.  Help Function---------------------------------------- 11
4.2.2. ERROR MESSAGE--------------------------------- 12
5 Features ------------------------------------------------------------ 14
6 Technical Descriptions---------------------------------------- 15
6.1. Connection Diagram------------------------------------- 15
6.2. General Block Diagram--------------------------------- 16
6.3. Facsimile Section ---------------------------------------- 18
6.3.1. Digital Section ---------------------------------------- 18
6.3.2. RTC Backup Circuit--------------------------------- 21
6.4. Analog circuit of Telephone section ----------------- 22
6.4.1. General ------------------------------------------------ 22
6.5. Modem Section ------------------------------------------- 24
6.5.1. Function------------------------------------------------ 24
6.6. NCU Section----------------------------------------------- 30
6.6.1. General ------------------------------------------------ 30
6.6.2. Line Relay (RLY401) ------------------------------- 30
6.6.3. Bell Detection Circuit ------------------------------- 30
6.6.4. Pulse Dial Circuit and ON/OFF Hook
Circuit--------------------------------------------------- 30
6.6.5. Line Amplifier and Side Tone Circuit------------ 31
6.7. CIS Control Section-------------------------------------- 32
6.8. Stepping Motor Drive Section ------------------------- 33
6.8.1. Engine Motor Drive Circuit ------------------------ 33
6.8.2. Scan Motor Drive Circuit--------------------------- 35
6.9. FAN Motor Section--------------------------------------- 37
6.9.1. FAN Control------------------------------------------- 37
6.10. Solenoid Drive Section --------------------------------- 38
6.11. LSU (Laser Scanning Unit) Section ----------------- 39
6.12. Sensors and Switches Section ----------------------- 41
6.12.1. Hook Switch ------------------------------------------ 41
6.12.2. Paper Feed Sensor --------------------------------- 42
6.12.3. Document Sensor ----------------------------------- 42
6.12.4. Top Cover Open Switch---------------------------- 43
6.12.5. Drum Detection  ------------------------------------- 44
6.12.6. Regist Sensor ---------------------------------------- 44
6.12.7. Paper Exit Sensor..... "PAPER JAMMED" ---- 45
6.12.8. Toner Sensor.... "TONER EMPTY",
"TONER LOW", "CHANGE DRUM" ------------ 46
6.13. Operation Board Section ------------------------------ 49
6.14. LCD Section----------------------------------------------- 50
6.15. HVPS (High Voltage Power Supply) Section ----- 51
6.15.1. HVPS Specification--------------------------------- 51
6.15.2. CHG-BIAS (Charge BIAS)/GRID/Unit --------- 51
6.15.3. DEV DC BIAS UNIT-------------------------------- 51
6.15.4. TRA(+) BIAS (Transfer(+) BIAS)/TRA(-)
BIAS (Transfer(-) BIAS) Unit --------------------- 52
6.16. Heat Lamp Control Circuit----------------------------- 53
6.17. Power Supply Board Section ------------------------- 58
6.18. DC-DC POWER SUPPLY ----------------------------- 59
7 Location of Controls and Components ----------------- 60
7.1. Overview --------------------------------------------------- 60
7.2. Control Panel --------------------------------------------- 61
8 Installation Instructions -------------------------------------- 62
8.1. Installation Space ---------------------------------------- 62
8.2. Connections----------------------------------------------- 63
8.3. Paper Stacker--------------------------------------------- 64
8.4. Document Stacker--------------------------------------- 64
8.5. Paper Tray------------------------------------------------- 65
8.6. Recording Paper ----------------------------------------- 65
8.7. Document Requirements ------------------------------ 67
8.8. Replacing the Toner Cartridge and the Drum
Unit ---------------------------------------------------------- 68
9 Operating Instructions---------------------------------------- 73
9.1. To Select Characters with the Dial Keypad ------- 73
9.2. To Select Characters Using [ + ] or [ - ] ------------ 73
9.3. Setting Your Logo---------------------------------------- 74
10 Test Mode --------------------------------------------------------- 75
10.1. Test Functions -------------------------------------------- 75
10.1.1. DTMF Single Tone Transmit Selection -------- 76
10.1.2. Button Code Table ---------------------------------- 77
10.1.3. Print Test Pattern------------------------------------ 78
11 Service Mode----------------------------------------------------- 79
11.1. Programming and Lists--------------------------------- 79
11.1.1. Operation --------------------------------------------- 79
11.1.2. Operation Flow -------------------------------------- 79
11.1.3. Service Function Table ---------------------------- 80
11.2. The Example of the Printed List --------------------- 83
11.2.1. User Mode (The list below is an example
of the SYSTEM SETUP LIST the unit
prints out.) -------------------------------------------- 83
11.2.2. Service Mode Settings (Example of a
printed out list) --------------------------------------- 84
11.2.3. History (Example of a printed out list) --------- 85
12 Troubleshooting Guide --------------------------------------- 87
12.1. User Recoverable Errors ------------------------------ 87
12.2. Error Messages-Report -------------------------------- 89
12.2.1. Journal Report --------------------------------------- 89
12.2.2. Special Service Journal Reports ---------------- 98
12.2.3. Communication Section --------------------------102
12.2.4. Initializing Error ------------------------------------- 107
12.2.5. Analog Board Section-----------------------------108
12.2.6. CIS (Contact Image Sensor) Section --------- 117
12.2.7. High Voltage Value Check Point --------------- 118
12.2.8. High Voltage Section------------------------------120
3
KX-FL423RU-B / KX-FL423RU-W 
12.2.9. Power Supply Board Section ------------------- 125
12.3. Remote Programming --------------------------------- 127
12.3.1. Entering the Remote Programming Mode
and Changing Service Codes ------------------ 128
12.3.2. Program Mode Table------------------------------ 129
12.4. Troubleshooting Details ------------------------------- 131
12.4.1. Outline ------------------------------------------------ 131
12.4.2. Starting Troubleshooting ------------------------- 131
12.4.3. Initialization------------------------------------------ 132
12.4.4. Simple Check List --------------------------------- 133
12.4.5. Simplified Troubleshooting Guide ------------- 134
12.4.6. Call Service Troubleshooting Guide ---------- 138
12.4.7. Print --------------------------------------------------- 144
12.4.8. Recording Paper Feed --------------------------- 152
12.4.9. ADF (Auto Document Feed) Section --------- 157
13 Service Fixture & Tools-------------------------------------- 164
14 Disassembly and Assembly Instructions ------------- 165
14.1. Upper Main Cabinet Section------------------------- 165
14.2. Lower Main Cabinet Section------------------------- 166
14.3. How to Remove the Front Cover ------------------- 167
14.4. How to Remove the Pick Up Unit------------------- 168
14.5. How to Remove the Pick Up Roller ---------------- 169
14.6. How to Remove the Operation Board ------------- 170
14.7. How to Remove the Lower Flame------------------ 171
14.8. How to Remove the Separation Rubber ---------- 171
14.9. How to Remove the Transfer Roller --------------- 172
14.10. How to Remove the Separation Roller ------------ 173
14.11. How to Remove the Bottom Plate------------------ 174
14.12. How to Remove the Analog Board----------------- 174
14.13. How to Remove the High Voltage Power
Board ------------------------------------------------------ 175
14.14. How to Remove the Laser Unit --------------------- 175
14.15. How to Remove the Fan Unit------------------------ 176
14.16. How to Remove the Low Voltage Power
Board ------------------------------------------------------ 176
14.17. How to Remove the Digital Board ------------------ 177
14.18. How to Remove the Main Motor -------------------- 177
14.19. How to Remove the Resitst Sensor Board------- 178
14.20. How to Remove the Toner Sensor Board -------- 178
14.21. How to Remove the Fuser Unit --------------------- 179
14.22. How to Remove the CIS ------------------------------ 180
14.23. Installation Position of the Lead--------------------- 181
15 Maintenance----------------------------------------------------- 183
15.1. Maintenance Items and Component Locations - 183
15.1.1. Outlines ---------------------------------------------- 183
15.1.2. Maintenance Check Items/Component
Locations--------------------------------------------- 183
15.2. Printing ---------------------------------------------------- 185
15.3. Printing (Paper Pick Up) ------------------------------ 186
15.4. Scanning (ADF) ----------------------------------------- 187
15.5. Maintenance --------------------------------------------- 188
15.5.1. Cleaning the Inside of the Unit  ---------------- 188
15.6. Document Jams----------------------------------------- 191
15.7. Recording Paper Jams-------------------------------- 193
15.7.1. When the recording paper has jammed
near the drum and toner unit-------------------- 193
15.7.2. When the recording paper has jammed
near the recording paper exit: ------------------ 194
15.8. Printing Operation Principle-------------------------- 197
15.8.1. Process Chart and Process Bias -------------- 197
15.8.2. Charging --------------------------------------------- 197
15.8.3. Exposing--------------------------------------------- 198
15.8.4. Laser Scanning Unit Locations ---------------- 198
15.8.5. Developing and Transcription ------------------ 199
15.8.6. Cleaning of Transfer Roller --------------------- 200
15.8.7. Fixing ------------------------------------------------- 201
15.8.8. Timing Chart (When Printing One Sheets
of Paper) BASIC----------------------------------- 202
15.8.9. Timing Chart [Initializing (Long)]--------------- 203
15.9. Terminal Guide of the ICs Transistors and
Diodes ---------------------------------------------------- 204
15.9.1. Digital Board---------------------------------------- 204
15.9.2. Analog Board--------------------------------------- 204
15.10. How to Replace the Flat Package IC ------------- 205
15.10.1. Preparation------------------------------------------ 205
15.10.2. Flat Package IC Removal Procedure -------- 205
15.10.3. Flat Package IC Installation Procedure------ 206
15.10.4. Bridge Modification Procedure----------------- 206
15.11. Digital Board Section---------------------------------- 207
15.11.1. NG Example ---------------------------------------- 208
15.12. Test Chart ------------------------------------------------ 209
15.12.1.  ITU-T No.1 Test Chart--------------------------- 209
15.12.2. ITU-T No.2 Test Chart---------------------------- 210
16 Schematic Diagram -------------------------------------------211
16.1. For Schematic Diagram -------------------------------211
16.2. Digital Board (PCB1) ---------------------------------- 212
16.2.1. Digital Board(1) ------------------------------------ 212
16.2.2. Digital Board(2) ------------------------------------ 214
16.2.3. Digital Board(3) ------------------------------------ 216
16.3. Analog Board (PCB2) --------------------------------- 218
16.4. Sensor Boards (PCB3-6)----------------------------- 220
16.5. Operation Board (PCB7) ----------------------------- 221
16.6. High Voltage Power Supply Board (PCB8) ------ 222
16.7. Low Voltage Power Supply Board (PCB9)------- 223
17 Printed Circuit Board ---------------------------------------- 225
17.1. Digital Board (PCB1) ---------------------------------- 225
17.1.1. Digital Board: Component View --------------- 225
17.1.2. Digital Board: Bottom View --------------------- 226
17.2. Analog Board (PCB2) --------------------------------- 227
17.2.1. Analog Board: Component View -------------- 227
17.2.2. Analog Board: Bottom View -------------------- 228
17.3. Exit Sensor Board-------------------------------------- 229
17.4. Drum & Toner Sensor Board ------------------------ 229
17.5. Varistor Sensor Board -------------------------------- 229
17.6. Resist Sensor Board ---------------------------------- 230
17.7. Operation Board (PCB7) ----------------------------- 231
17.7.1. Operation Board: Component View ---------- 231
17.7.2. Operation Board: Bottom View ---------------- 232
17.8. High Voltage Power Supply Board (PCB8) ------ 233
17.8.1. High Voltage Power Supply Board:
Component View ---------------------------------- 233
17.8.2. High Voltage Power Supply Board: Bottom
View--------------------------------------------------- 234
17.9. Low Voltage Power Supply Board (PCB9)------- 235
17.9.1. Low Voltage Power Supply Board:
Component View ---------------------------------- 235
17.9.2. Low Voltage Power Supply Board: Bottom
View--------------------------------------------------- 236
18 Exploded View and Replacement Parts List --------- 237
18.1. Cabinet, Mechanical and Electrical Parts
Location -------------------------------------------------- 237
18.1.1. General Section ----------------------------------- 237
4
KX-FL423RU-B / KX-FL423RU-W 
18.1.2. Operation Cover Section (1)-------------------- 238
18.1.3. Operation Cover Section (2)-------------------- 239
18.1.4. Operation Cover Section (3)-------------------- 240
18.1.5. Pick Up Section ------------------------------------ 241
18.1.6. Fuser Section--------------------------------------- 242
18.1.7. Lower Main Cabinet Section (1) --------------- 243
18.1.8. Lower Main Cabinet Section (2) --------------- 244
18.1.9. Motor Section--------------------------------------- 245
18.1.10. Fan Motor Section--------------------------------- 246
18.1.11. Lower Cabinet Section (3) ---------------------- 247
18.1.12. Gear Section---------------------------------------- 248
18.1.13. Actual Size of Screws and Washer ----------- 249
18.1.14. Accessories and Packing Materials----------- 250
18.2. Replacement Parts List ------------------------------- 251
18.2.1. Cabinet and Electrical Parts -------------------- 251
18.2.2. Digital Board Parts -------------------------------- 254
18.2.3. Analog Board Parts ------------------------------- 257
18.2.4. Exit Sensor Board Parts ------------------------- 258
18.2.5. Drum & Toner Sensor Board Parts------------ 258
18.2.6. Varistor Sensor Board Parts -------------------- 258
18.2.7. Resist Sensor Board Parts---------------------- 258
18.2.8. Operation Board Parts --------------------------- 258
18.2.9. High Voltage Power Supply Board Parts ---- 259
18.2.10. Low Voltage Power Supply Board Parts----- 259
Page of 127
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Download Panasonic KX-FL423RU Service Manual (Repair Manual)

Here you can read online and download Panasonic KX-FL423RU Service Manual in PDF. KX-FL423RU service manual will guide through the process and help you recover, restore, fix, disassemble and repair Panasonic KX-FL423RU Fax. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.