KX-MB763RU (serv.man13) - Panasonic Fax Service Manual (repair manual)

ORDER NO. KMF0709112CE

(for Russia)

2

PAGE

PAGE

1 Safety Precautions -----------------------------------------------3

1.1. FOR SERVICE TECHNICIANS ------------------------3
1.2. AC CAUTION -----------------------------------------------3
1.3. PERSONAL SAFETY PRECAUTIONS --------------4
1.4. SERVICE PRECAUTIONS ------------------------------4

2 Warning --------------------------------------------------------------5

2.1. ABOUT LEAD FREE SOLDER (PbF: Pb free) -----5
2.2. Discarding of P. C. Board --------------------------------5
2.3. INSULATION RESISTANCE TEST--------------------6
2.4. BATTERY CAUTION --------------------------------------6
2.5. LASER BEAM AND FUSER UNIT SECTION ------6

3 Specifications ------------------------------------------------------7
4 General/Introduction ---------------------------------------------8

4.1. OPTIONAL ACCESSORIES ----------------------------8
4.2. Translation Lists --------------------------------------------8

5 Features ------------------------------------------------------------ 10

5.1. General Features----------------------------------------- 10
5.2. HARDWARE REQUIREMENTS FOR MULTI-

FUNCTION SOFTWARE------------------------------- 10

6 Technical Descriptions---------------------------------------- 11

6.1. CONNECTION DIAGRAM ----------------------------- 11
6.2. GENERAL BLOCK DIAGRAM------------------------ 12
6.3. MAIN BOARD SECTION------------------------------- 14
6.4. NCU SECTION ------------------------------------------- 26
6.5. ITS (Integrated telephone System) and

MONITOR SECTION------------------------------------ 27

6.6. CIS CONTROL SECTION ----------------------------- 28
6.7. MOTOR DRIVE SECTION----------------------------- 29
6.8. TIMING CHART AND WAVE FORM OF

SCANNER MOTORS ----------------------------------- 33

6.9. FAN MOTOR SECTION -------------------------------- 36

6.10. SOLENOID DRIVER SECTION ---------------------- 38

6.11. LSU (Laser Scanning Unit) SECTION -------------- 39

6.12. SENSORS AND SWITCHES SECTION ----------- 41
6.13. OPERATION BOARD SECTION--------------------- 49
6.14. LCD SECTION-------------------------------------------- 50
6.15. HVPS (High Voltage Power Supply)

SECTION--------------------------------------------------- 51

6.16. HEAT LAMP CONTROL CIRCUIT------------------- 53
6.17. Main Board Section-------------------------------------- 58
6.18. POWER SUPPLY BOARD SECTION -------------- 61
6.19. Mechanical Operation----------------------------------- 62

7 Location of Controls and Components------------------ 63

7.1. OVERVIEW------------------------------------------------ 63
7.2. CONTROL PANEL--------------------------------------- 64

8 Installation Instructions--------------------------------------- 65

8.1. INSTALLATION ------------------------------------------- 65
8.2. CONNECTIONS------------------------------------------ 77

9 Operation Instructions ---------------------------------------- 78

9.1.  YOUR LOGO--------------------------------------------- 78

10 Test Mode---------------------------------------------------------- 80

10.1. TEST FUNCTIONS -------------------------------------- 80

11 Service Mode ----------------------------------------------------- 84

11.1. PROGRAMMING AND LISTS ------------------------ 84
11.2. USER MODE (The list below is an example of

the SYSTEM SETUP LIST the unit prints out.) --- 88

11.3. SERVICE MODE SETTINGS (Example of a

printed out list) -------------------------------------------- 89

11.4. HISTORY -------------------------------------------------- 90

12 Troubleshooting Guide --------------------------------------- 93

12.1. USER RECOVERABLE ERRORS ------------------ 93
12.2. REMOTE PROGRAMMING -------------------------- 95
12.3. TROUBLESHOOTING DETAILS -------------------100
12.4. RECORDING PAPER JAM --------------------------167

13 Service Fixture & Tools--------------------------------------176
14 Disassembly and Assembly Instructions -------------177

14.1. TOP COVER SECTION------------------------------- 178
14.2. REMOVE TOP COVER SECTION (1) ------------179
14.3. REMOVE TOP COVER SECTION (2) ------------180
14.4. REMOVE SCANNER GLASS SECTION---------181
14.5. REMOVE OPERATION PANEL SECTION ------182
14.6. LEFT SIDE SECTION ---------------------------------183
14.7. REMOVE MAIN BOARD -----------------------------183
14.8. REMOVE GEAR CHASSIS SECTION------------184
14.9. REMOVE PAPER FEED ROLLER -----------------185

14.10. RIGHT SIDE SECTION ------------------------------- 185

14.11. REMOVE RIGHT SIDE COVER SECTION------186

14.12. LOWER SIDE CABINET SECTION ---------------187
14.13. REMOVE RIGHT CASSETTE GUIDE ------------188
14.14. REMOVE PICK UP BOARD -------------------------188
14.15. REMOVE HIGH VOLTAGE POWER BOARD---189
14.16. REMOVE PICK UP ROLLER UNIT----------------190
14.17. REMOVE LOW VOLTAGE POWER BOARD ---191
14.18. REMOVE FUSER UNIT------------------------------- 192
14.19. Installation Position of The Lead--------------------193

15 Maintenance-----------------------------------------------------198

15.1. MAINTENANCE ITEMS AND COMPONENT

LOCATIONS ---------------------------------------------198

15.2. MAINTENANCE-----------------------------------------200
15.3. PRINTING OPERATION PRINCIPLE -------------204
15.4. TERMINAL GUIDE OF THE ICs

TRANSISTORS AND DIODES----------------------209

15.5. HOW TO REPLACE THE FLAT PACKAGE IC - 211
15.6. MAIN BOARD SECTION -----------------------------213
15.7. TEST CHART--------------------------------------------215

16 Schematic Diagram -------------------------------------------217

16.1. For Schematic Diagram------------------------------- 217
16.2. MAIN BOARD (1)--------------------------------------- 218
16.3. MAIN BOARD (2)--------------------------------------- 222
16.4. MAIN BOARD (3)--------------------------------------- 224
16.5. MAIN BOARD (4)--------------------------------------- 226
16.6. OPERATION BOARD ---------------------------------228
16.7. SENSOR BOARD --------------------------------------229
16.8. HOOK SWITHC BOARD -----------------------------230

17 Printed Circuit Board-----------------------------------------231

17.1. MAIN BOARD -------------------------------------------231
17.2. OPERATION BOARD ---------------------------------233
17.3. SENSOR BOARD --------------------------------------235
17.4. HOOK SWITCH BOARD -----------------------------237

18 Exploded View and Replacement Parts List----------238

18.1. CABINET, MECHANICAL AND ELECTRICAL

PARTS LOCATION-------------------------------------238

18.2. REPLACEMENT PARTS LIST ----------------------250

3

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.

6. Repair service shall be provided in accordance with repair technology information such as technical guides so as to prevent

fires, injury or electric shock, which can be caused by improper repair work. 

7. When repair services are provided, neither the products nor their parts or members shall be remodeled.
8. If a wiring unit is supplied as a repair part, the entire wiring unit shall be replaced, rather than repairing and connecting the

wires, even when only some of its wires are broken.

9. FASTON terminals shall be plugged straight in and unplugged straight out, rather than jiggling them into or out of position.

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.

4

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.

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 disas-
sembling for service.

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.