Panasonic KX-MB2085CXW, Service Manual

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KX-MB2085CXW/KX-MB2090CXW
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
1.4. Service Precautions ---------------------------------------6
1.4.1. Precautions to Prevent Damage from
Static Electricity ----------------------------------------6
2 Warning -------------------------------------------------------------- 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 ------------------------------------------- 12
4.1. Optional Accessories------------------------------------ 12
4.2. Translation Lists ------------------------------------------ 12
5 Features ------------------------------------------------------------ 13
5.1. General Features----------------------------------------- 13
5.2. Hardware Requirements for Multi-Function
Software ---------------------------------------------------- 13
6 Technical Descriptions ---------------------------------------- 14
6.1. Connection Diagram------------------------------------- 14
6.2. General Block Diagram--------------------------------- 15
6.3. Main Board Section-------------------------------------- 17
6.3.1. Data Flow---------------------------------------------- 17
6.3.2. RTC Backup Circuit -------------------------------- 26
6.3.3. Modem Circuit Operation ------------------------- 27
6.3.4. TEL Line Section ----------------------------------- 27
6.4. NCU Section ---------------------------------------------- 29
6.4.1. General ------------------------------------------------ 29
6.4.2. EXT. TEL. Line Relay (RLY100) ----------------- 29
6.4.3. Bell Detection Circuit ------------------------------- 29
6.4.4. Pulse Dial Circuit ------------------------------------ 29
6.4.5. Line Amplifier and Side Tone Circuit------------ 29
6.4.6. Calling Line Identification Circuit (FSK)-------- 30
6.4.7. Calling Line Identification Circuit (DTMF) ----- 30
6.4.8. Calling Line Identification Circuit (FSK)-------- 30
6.4.9. Remote FAX Activation Circuit ------------------- 30
6.4.10. TAM Interface Circuit ------------------------------- 30
6.5. ITS (Integrated telephone System) and
Monitor Section ------------------------------------------- 31
6.5.1. General ------------------------------------------------ 31
6.6. CIS Control Section-------------------------------------- 32
6.7. Motor Drive Section-------------------------------------- 33
6.7.1. Engine Motor Control Circuit --------------------- 33
6.7.2. Scanner Motor Drive Circuit ---------------------- 34
6.8. Timing chart and wave form of scanner
motors------------------------------------------------------- 37
6.8.1. Normal 1-2 phase excitation (half step)-------- 37
6.8.2. Flat torque 1-2 phase excitation (half step) --- 38
6.8.3. W1-2 phase excitation (Quarter step) ---------- 39
6.8.4. Drive mode of FB and ADF motor--------------- 40
6.9. FAN Motor Section--------------------------------------- 40
6.9.1. General ------------------------------------------------ 40
6.9.2. Circuit Diagram of FAN ---------------------------- 41
6.9.3. Fan Control ------------------------------------------- 41
6.9.4. Control table------------------------------------------ 42
6.9.5. Waveform --------------------------------------------- 42
6.10. Solenoid Driver Section -------------------------------- 43
6.11. LSU (Laser Scanning Unit) Section----------------- 44
6.12. Sensors and Switches Section----------------------- 46
6.12.1. Drum Detection ------------------------------------- 47
6.12.2. Pickup Sensor --------------------------------------- 47
6.12.3. Exit Sensor ------------------------------------------- 48
6.12.4. Read Position Sensor------------------------------ 48
6.12.5. Registration & Manual Paper Sensor ---------- 49
6.12.6. Print Timing Sensor -------------------------------- 49
6.12.7. Document Sensor----------------------------------- 50
6.12.8. Top Cover Sensor----------------------------------- 50
6.12.9. Toner Sensor----------------------------------------- 51
6.12.10. Handset Hook Switch ----------------------------- 54
6.13. Operation Board Section ------------------------------ 55
6.14. LCD Section----------------------------------------------- 56
6.15. H.V.P.S. (High Voltage Power Supply) Section -- 57
6.15.1. HVPS Specification--------------------------------- 57
6.15.2. CHG-BIAS (Charge BIAS)/GRID/ UNIT------- 57
6.15.3. DEV DC BIAS UNIT-------------------------------- 58
6.15.4. DEV AC BIAS UNIT -------------------------------- 58
6.15.5. TRA (+) BIAS (Transfer (+) BIAS)/TRA (-)
BIAS (Transfer (-) BIAS) UNIT------------------- 58
6.16. Heat Lamp Control Circuit----------------------------- 59
6.17. Power Saving (Sleep) Function ---------------------- 64
6.18. Main Board Power Supply Section------------------ 65
6.18.1. 3.3V and 1.2V Power Supply Descriptions --- 65
6.18.2. 5V Power Supply Descriptions ------------------ 65
6.18.3. 24V Power Supply Descriptions----------------- 66
6.19. Power Supply Board Section ------------------------- 67
6.20. Mechanical Operation ---------------------------------- 68
6.20.1. Printing ------------------------------------------------ 68
7 Location of Controls and Components ----------------- 69
8 Installation Instructions -------------------------------------- 69
9 Operating Instructions ---------------------------------------- 69
10 Test Mode --------------------------------------------------------- 70
10.1. Test Functions -------------------------------------------- 70
10.1.1. DTMF Single Tone Transmit Selection -------- 72
10.1.2. Button Code Table ---------------------------------- 72
10.1.3. Print Test Pattern------------------------------------ 73
11 Service Mode ----------------------------------------------------- 74
11.1. Programming and Lists--------------------------------- 74
11.1.1. Operation --------------------------------------------- 74
11.1.2. Operation Flow -------------------------------------- 74
11.1.3. Service Function Table ---------------------------- 75
11.1.4. Memory Clear Specification ---------------------- 77
11.2. User Mode (The list below is an example of
the SYSTEM SETUP LIST the unit prints out.) -- 78
11.3. Service Mode Settings (Example of a printed
out list)------------------------------------------------------ 82
11.4. History (Example of a printed out list) -------------- 83
11.4.1. Descriptions of the History Report-------------- 84
12 Troubleshooting Guide --------------------------------------- 85
12.1. User Recoverable Errors ------------------------------ 85