DOWNLOAD Panasonic KX-MB283RU / KX-MB783RU Service Manual ↓ Size: 15.15 MB | Pages: 127 in PDF or view online for FREE

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1 Safety Precautions -----------------------------------------------4

1.1. FOR SERVICE TECHNICIANS ------------------------4
1.2. AC CAUTION -----------------------------------------------4
1.3. PERSONAL SAFETY PRECAUTIONS --------------5
1.4. SERVICE PRECAUTIONS ------------------------------5

2 Warning --------------------------------------------------------------6

2.1. ABOUT LEAD FREE SOLDER (PbF: Pb free) -----6
2.2. Discarding of P. C. Board --------------------------------7
2.3. INSULATION RESISTANCE TEST--------------------7
2.4. BATTERY CAUTION --------------------------------------7
2.5. LASER BEAM AND FUSER UNIT SECTION ------7

3 Specifications ------------------------------------------------------8
4 General/Introduction ---------------------------------------------9

4.1. OPTIONAL ACCESSORIES ----------------------------9
4.2. TRANSLATION LISTS ------------------------------------9
4.3. ERROR MESSAGE ------------------------------------- 10

5 Features ------------------------------------------------------------ 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
6.4. NCU SECTION (KX-MB783RU ONLY)------------- 28
6.5. ITS (Integrated telephone System) and

MONITOR SECTION (KX-MB783RU ONLY) ----- 29

6.6. CIS CONTROL SECTION ----------------------------- 30
6.7. MOTOR DRIVE SECTION----------------------------- 31
6.8. TIMING CHART AND WAVE FORM OF

SCANNER MOTORS ----------------------------------- 35

6.9. FAN MOTOR SECTION -------------------------------- 38

6.10. SOLENOID DRIVER SECTION ---------------------- 40

6.11. LSU (Laser Scanning Unit) SECTION -------------- 41

6.12. SENSORS AND SWITCHES SECTION ----------- 43
6.13. OPERATION BOARD SECTION--------------------- 51
6.14. LCD SECTION-------------------------------------------- 53
6.15. HVPS (High Voltage Power Supply)

SECTION--------------------------------------------------- 54

6.16. HEAT LAMP CONTROL CIRCUIT------------------- 56
6.17. Main Board Section-------------------------------------- 61
6.18. POWER SUPPLY BOARD SECTION -------------- 64
6.19. Mechanical Operation----------------------------------- 65

7 Location of Controls and Components------------------ 67

7.1. OVERVIEW------------------------------------------------ 67
7.2. CONTROL PANEL--------------------------------------- 68

8 Installation Instructions--------------------------------------- 69

8.1. INSTALLATION ------------------------------------------- 69
8.2. CONNECTIONS------------------------------------------ 80

9 Operating Instructions ---------------------------------------- 82

9.1.  YOUR LOGO (KX-MB783RU ONLY) -------------- 82

10 Test Mode---------------------------------------------------------- 84

10.1. TEST FUNCTIONS -------------------------------------- 84

11 Service Mode ----------------------------------------------------- 88

11.1. PROGRAMMING AND LISTS ------------------------ 88
11.2. USER MODE (The list below is an example of

the SYSTEM SETUP LIST the unit prints out.)--- 92

11.3. SERVICE MODE SETTINGS (Example of a

printed out list)-------------------------------------------- 94

11.4. HISTORY -------------------------------------------------- 95

12 Troubleshooting Guide --------------------------------------- 98

12.1. USER RECOVERABLE ERRORS ------------------ 98
12.2. REMOTE PROGRAMMING (KX-MB783RU

ONLY) -----------------------------------------------------100

12.3. TROUBLESHOOTING DETAILS -------------------107
12.4. DOCUMENT JAMS (AUTO DOCUMENT

FEEDER) -------------------------------------------------189

12.5. RECORDING PAPER JAM --------------------------191

13 Service Fixture & Tools-------------------------------------- 199
14 Disassembly and Assembly Instructions -------------200

14.1. ADF SECTION ------------------------------------------201
14.2. REMOVE ADF SECTION (1)------------------------202
14.3. REMOVE ADF SECTION  ---------------------------203
14.4. REMOVE TOP COVER SECTION-----------------204
14.5. REMOVE SCANNER GLASS SECTION---------205
14.6. REMOVE OPERATION PANEL SECTION ------206
14.7. LEFT SIDE SECTION ---------------------------------207
14.8. REMOVE MAIN BOARD -----------------------------207
14.9. REMOVE GEAR CHASSIS SECTION------------208

14.10. REMOVE PAPER FEED ROLLER -----------------209

14.11. RIGHT SIDE SECTION -------------------------------209

14.12. REMOVE RIGHT SIDE COVER SECTION------210
14.13. LOWER SIDE CABINET SECTION --------------- 211
14.14. REMOVE RIGHT CASSETTE GUIDE ------------212
14.15. REMOVE PICK UP BOARD -------------------------212
14.16. REMOVE HIGH VOLTAGE POWER BOARD--- 213
14.17. REMOVE PICK UP ROLLER UNIT----------------214
14.18. REMOVE LOW VOLTAGE POWER BOARD --- 215
14.19. REMOVE FUSER UNIT-------------------------------216
14.20. Installation Position of The Lead-------------------- 217

15 Maintenance-----------------------------------------------------223

15.1. MAINTENANCE ITEMS AND COMPONENT

LOCATIONS ---------------------------------------------223

15.2. MAINTENANCE-----------------------------------------225
15.3. PRINTING OPERATION PRINCIPLE -------------230
15.4. TERMINAL GUIDE OF THE ICs

TRANSISTORS AND DIODES---------------------- 235

15.5. HOW TO REPLACE THE FLAT PACKAGE IC -237
15.6. MAIN BOARD SECTION -----------------------------239
15.7. TEST CHART--------------------------------------------241

16 Schematic Diagram -------------------------------------------243

16.1. For Schematic Diagram-------------------------------243
16.2. KX-MB283RU MAIN BOARD------------------------245
16.3. KX-MB783RU MAIN BOARD------------------------255
16.4. OPERATION BOARD ---------------------------------265
16.5. SENSOR BOARD -------------------------------------- 266
16.6. HIGH VOLTAGE POWER SUPPLY BOARD ---- 268
16.7. LOW VOLTAGE POWER SUPPLY BOARD----- 269
16.8. HOOK SWITCH BOARD (KX-MB783RU

ONLY) -----------------------------------------------------270

17 Printed Circuit Board-----------------------------------------271

17.1. MAIN BOARD -------------------------------------------271
17.2. OPERATION BOARD ---------------------------------273
17.3. SENSOR BOARD -------------------------------------- 275
17.4. HIGH VOLTAGE POWER SUPPLY BOARD ---- 278

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17.5. LOW VOLTAGE POWER SUPPLY BOARD ---- 279
17.6. HOOK SWITCH BOARD (KX-MB783RU

ONLY) ----------------------------------------------------- 280

18 Exploded View and Replacement Parts List --------- 281

18.1. CABINET, MECHANICAL AND ELECTRICAL

PARTS LOCATION------------------------------------- 281

18.2. REPLACEMENT PARTS LIST ---------------------- 295

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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.

• Repair service shall be provided in accordance with repair technology information such as service manual so as to pre-

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.

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.

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.