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KX-MC6020HX 18.1.2. Main Board: Bottom View C1230 8 7 8 7 87 65 21 21 65 65 41 32 1 9 78 C493 12 10 1 1 12 C1235 C1124 C1156 R492 L451 C486 C485 L450 C480 C479 C1233 5 C1229 1 1 8 D454 6 L379 L380 C309 R240 C249 L226 R242 R241 1 6 2 C460 PFUP1693Z PbF C442 C452 C458 C444 R400 R401 RA318 C1180 C1182 RA317 RA315 RA316 R321 R317 C440 C464 C465 C438 R415R416 C457 C446 C439 C435 C443 C441 R402 C1176 R403 C1178 RA314 RA313 RA311 RA312 R319 R315 C433 C462 C463 C437 R413 R414 RA300 RA301 RA304RA303RA302 C436 C1188 R323 C1185 R362 RA310 C315 C482 R386 R387 R388 R389 C310 R361 R358 R366 R476 C357 C356 C330 R359 R357 R363 R355 R345 R313 C329 C338 C344 C347 C327 C343 C339 L382 C304 C331 C358 R311 C332 L326 L384 L385 L369 L389 R381 C359 L391 L383 R371 L395 L394 R377 R380 C360 R373 C335 L396 R330 R329 R328 CL311 C361 C300 C362 C301 C334 R335 C551 R533 R337 C302 R338 C303 C326 C307 R390 C311 C325 C352 R365 C342 C341 C328 C1232 C337 C340 C1234 C348 C333 C353C322 C349 C1231 L324 C363 C351 C324 C350 R395 C354 R314 R364 IC301 +1.2V/BATT 1 R332 R333 R304 R307 +3.3V/BATT C320 R394 C1174 C321 C323 R392 R393 D300 GND C319 C318 C1137 CLV9 R606 R612 GND R658 R649 CL631 R650 R678 CCLL662367RR667456CL629RRR666776642 R647 CL636 GND +1.25VTT R465 R464 R463 R462 R461 R460 R459 R458 R666 R665 +1.25VTT2 R657 CL625 R643 CL633 CL616 CL675 CL621 R59 CL620 R661 CL642 C972 C978 C976 C973 C962 R1009 R1020 R1012 R1006 C983 C968 C969 C970 C988 C966 R971 R973 R979 R960 R982 C977 R980 R970 R972 R963 R978 R983 R981 R968 R966 RA963 RA965 C964 C987 R964 R961 R1015 C981 R1014 C971 C979 C980 C985 R1016 R969 R967 R965 R962 R986 C963 C967 C974 C982 C965 R994 R992 R977 R974 R990 R988 R995 R997 R999 R1001 C961 C984 C986 C975 R1000 R1002 RA964 RA966 R1004 R1003 C628 C960 C637 R993 R991 C615 C640 R976 C638 C627 R975 R989 R987 R996 R998 C639 C616 C614 C636 C635 C620 C634 C613 C630 C611 C626 C619 C618 C631C612 L601 C632 C623 R611 C622 CL618 C633 C621 L651 C1003 C993 R607 C991 R608 C995 C1004 C992 C990 C603 C994 L966 L961 L960 L962 C629 C625 C624 C617 CL617 CL619 CL604 R626 R605 R638 R639 R640L661 R613 L609 L603 L610 L655 L604 L607 C1148 GND L650 CL609 C1001 C999 C998 C1000 C997 C996 L965 L963 L964 C858 L642 L641 L643 L648 CL614 CL615 R633 R632 R629 R627 CL610 CL606 CL612 CL611 CL608 CL607 C1227 2 1 CL700 C1220 1 C1219 14 13 2 1 R823 R824 R822 R768 R777 R781 R763 R770 R780 R761 R764 R776 R760 R762 R767 2 1 R946 R942 R937 R933 C903 1 R943R934R931R926 R945 R936C905 C907 C906 R924 R928 R949 R935 D834 R725 R724 R721 R720 C729 C730 R733 R732 R948 R929 R925 R738 R927 R737 C734 C732 R723 R727 R726 C731 R722 R904 R735 1 R734 R932 R930 R921 R922 C902 4 3 1 41 R836 R839 R844 1 1 C833 R853 R848 C839 R849 C1222 R895 R900 R898 R904 R902 R911 1 C346 1 +2.5V GND +1.5V GND +5VD R244 GND +5VD2 GND C317 8 C710 R713 1 3 1 L106 L105 R113 R110 C109 L109 R106 L108 C110 R112 R109 C122 E Q105 R107 C126 R119 D102 R104 C247 R253 R212 R210 R108 R258 R236 R223 C221 R211 C222 R220 C218L212 R207 R209 L206 C243 R252 C245 R239 R205 C205 C203 C204 C217 C234 C250 Q201 R116 C233 E C232 4 1 IC204 C202 R206 R237 C211 C1169 R215 3 IC201 5 L204 2R2081C226 L213 4 C216 1 5 IC203 C248 8 C227 5 L216 L232 8 L225 C207 R230 R231 R229 L217 R227 R226 L237 L214 L2R3323L421C9R222833 1 L218 R232 C230 2 D200 C1218 C1217 +1.2V 1 18 8 17 E Q9 R32 E Q10 R33 R36 R34 R35 +3.3V C1225 C1224 C1221 +7VB 1 +7VA +24VC C1214 +24VB C1168 C1164 +24VA C1216 C1117 C1123 1 1 9 1 2 16 1 2 10 121 2 1 16 15 2 8 CL760 12 9 C701 3 15 9 5 10 6 4 12 11 A C1111 C1105 C1117 KX-MC6020HX MAIN BOARD BOTTOM VIEW 418

Section	Page
ORDER NO. KMF0811207CE	1
1 Safety Precautions	3
1.1. For Service Technicians	3
1.2. AC Caution	3
1.3. Personal Safety Precautions	4
1.3.1. Moving Sections of The Unit	4
1.3.2. Live Electrical Sections	4
1.4. Service Precautions	5
1.4.1. Precautions to Prevent Damage From Static Electricity	5
2 Warning	5
2.1. About Lead Free Solder (PbF: Pb free)	5
2.1.1. Suggested PBF Solder	5
2.2. Discarding of P. C. Board	6
2.3. Insulation Resistance Test	6
2.4. Battery Caution	6
2.4.1. Information for Users on Collection and Disposal of Old Equipment and used Batteries	6
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
4.2.1. Help Function	9
4.2.2. Error Message (Report)	10
4.2.2.1. CZECH	10
4.2.2.2. SLOVAK	10
4.2.2.3. HUNGARIAN	10
4.2.3. Error Message (Display)	11
4.2.3.1. CZECH	11
4.2.3.2. SLOVAK	13
4.2.3.3. HUNGARIAN	15
4.3. Precautions for Shipping	17
4.3.1. Necessary Items and Procedures for Each Service Type	17
4.3.2. Repack Procedure	20
5 Features	30
5.1. General Features	30
5.2. Hardware Requirements for Multi-Function Software	30
6.1. Connection Diagram	31
6.2. General Block Diagram	32
6.3. Main Board Section	35
6.3.1. Data Flow	35
6.3.2. RTC Backup Circuit	51
6.3.3. Modem Circuit Operation	51
6.3.4. TEL Line Section	52
6.3.4.1. Description of Block Diagram in Analog Section	52
6.3.4.2. Block Diagram	52
6.4. NCU Section	53
6.4.1. General	53
6.4.2. EXT. TEL. Line Relay (RY100)	53
6.4.3. BELL Detection Circuit	53
6.4.4. Calling Line Identification Circuit	53
6.4.5. Remote FAX Activation Circuit	53
6.4.6. TAM Interface Circuit	53
6.5. ITS (Integrated Telephone System) and Monitor Section	54
6.5.1. General	54
6.5.1.1. Telephone Monitor	54
6.5.1.2. Handset Circuit	54
6.5.1.3. Monitor Circuit	54
6.5.1.4. TAM Interface Section	54
6.6. CIS Control Section	55
6.7. Motor Drive Section	56
6.7.1. Engine Motor Control Circuit	56
6.7.1.1. BK Motor Control Circuit	56
6.7.1.2. Color Motor Control Circuit	57
6.7.2. Scanner Motor Drive Circuit	59
6.7.2.1. Motor Current Control Circuit	59
6.7.2.2. FB (FLATBED) Motor Drive Circuit	60
6.7.2.3. ADF (AUTOMATIC DOCUMENT FEEDER) Motor Drive Circuit	60
6.7.3. ADU (Automatic Duplex Unit (Option)) Motor Drive Circuit	61
6.7.3.1. Motor Current Control Circuit	61
6.7.3.2. ADU (Automatic Duplex Unit (Option)) Motor Drive Circuit	62
6.7.4. Optional Lower Input Tray Motor (OPF Motor) Drive Circuit	63
6.7.4.1. Motor Current Control Circuit	63
6.7.4.2. Optional Lower Input Tray Motor (OPF Motor) Drive Circuit	64
6.8. Timing Chart and Waveform of Scanner Motors	65
6.8.1. Normal 1-2 Phase Excitation (Half Step)	65
6.8.2. Flat Torque 1-2 Phase Excitation (Half Step)	66
6.8.3. W 1-2 Phase Excitation (Quarter Step)	67
6.8.4. Drive Mode of FB and ADF Motor	68
6.9. Timing Chart and Waveform of Optional Unit Motors	69
6.9.1. Normal 1-2 Phase Excitation (Half Step)	69
6.10. Fan Section	70
6.10.1. Fuser Fan	70
6.10.2. PSU Fan	71
6.11. Solenoid Driver Section	72
6.12. LSU (Laser Scanning Unit) Section	73
6.12.1. LSU (Laser Scanning Unit) Layout	73
6.12.2. Circuit Diagram	74
6.12.2.1. Block Diagram	74
6.12.2.2. Circuit Diagram	75
6.12.3. Timing Diagram	76
6.13. Sensors and Switches Section	78
6.13.1. OPC Home Sensor	79
6.13.2. FTR Home Sensor	80
6.13.3. Registration and Paper Pick Home Sensor	80
6.13.4. Registration and Paper (Paper Sensor)	81
6.13.5. Registration and Paper (Resistration Sensor)	81
6.13.6. Registration and Paper Cassette Sensor	82
6.13.7. Fuser Jam Sensor	82
6.13.8. CIS Home Sensor	83
6.13.9. ADF Document Sensor	83
6.13.10. ADF Read Position Sensor	84
6.13.11. Waste Toner Sensor	84
6.13.12. Toner Sensor	86
6.13.13. Drum Cartridge Virgin Sensor	89
6.13.14. Waste Toner Bottle Switch	90
6.13.15. Front/left Cover Switch	90
6.13.16. 24V Interlock Switch	90
6.13.17. 5V Interlock Switch	91
6.13.18. Handset Hook Switch	91
6.13.19. Color Registration Detection Circuit	92
6.13.20. Humidity/Temperature Sensor Circuits	95
6.13.20.1. Temperature Sensor (Characteristics of Temperature Detection Thermistor)	96
6.13.20.2. Humidity Sensor (Characteristics of Humidity Detection Thermistor)	97
6.13.21. Optional OPF Paper Sensor	98
6.13.22. Optional OPF Jam Sensor	98
6.13.23. Optional OPF Cassette Sensor	99
6.13.24. Optional OPF Cover Switch	100
6.13.25. Optional ADU Jam Sensor	100
6.13.26. Optional ADU Cover Switch	100
6.14. Operation Board Section	101
6.15. LCD Section	102
6.16. Heat Lamp Control Circuit	103
6.17. HVU (High Voltage Power Supply Board) Section	107
6.17.1. High Voltage Circuit	107
6.17.2. Charge Control Circuit	107
6.17.3. Development Bias Control Circuit	108
6.17.4. Toner Supply Bias Control Circuit	108
6.17.5. First Transfer Control Circuit ( FTR )	108
6.17.6. Second Transfer Control Circuit (STR)	109
6.17.7. Reverse Bias Control Circuit	109
6.17.8. Charger Error Detecting Circuit	109
6.17.9. D/A Convertor (8bit, 12ch) Interface Circuit	110
6.17.10. Interface	111
6.18. Main Board Section	112
6.18.1. Main Unit Power Supply Circuit Block Diagram	112
6.18.2. DC-DC Power Supply Circuit (3.3V / 2.5V / 1.5V / 1.2V)	113
6.18.3. Regulator Circuit (5V)	115
6.18.4. Regulator Circuit (1.25V)	115
6.18.5. Reset Circuit	115
6.19. PSU (Low Voltage Power Supply Board) Section	116
6.20. Mechanical Operation	117
6.20.1. Color Motor Rotation Travel	117
6.20.1.1. Color Motor Rotation Travel for Driving 3 Color (CMY) Drum Cartridges	118
6.20.1.2. Color Motor Rotation Travel for Driving 3 Color (CMY) Toner Cartridges	119
6.20.2. BK Motor Rotation Travel	120
6.20.3. BK Motor Rotation Travel for Driving Black Drum Cartridge	121
6.20.3.1. BK Motor Rotation Travel for Driving Accumulator Unit and Black Toner Cartridge	122
6.20.3.2. BK Motor Rotation Travel for Driving Fuser Unit	123
6.20.3.3. BK Motor Rotation Travel for Driving Waste Toner Cartridge	124
6.20.3.4. BK Motor Rotation Travel for Driving Accumulator Unit	125
6.20.4. Print Process	126
6.20.4.1. Charging	127
6.20.4.2. Laser Exposure and Scanning	127
6.20.4.2.1. Laser Exposure	127
6.20.4.2.2. Laser Scanning	128
6.20.4.3. Developing	128
6.20.4.4. Toner Transfer to the Accumulator Belt	129
6.20.4.5. Paper Pickup	129
6.20.4.6. Toner Transfer to Paper	130
6.20.4.7. Fusing	131
6.20.4.8. Paper Exit and Paper Switchback	132
6.20.4.8.1. Normal Printing Mode (Not Duplex Printing Mode)	132
6.20.4.8.2. Duplex Printing Mode (Paper Switchback)	133
7 Location of Controls and Components	134
7.1. Overview	134
7.1.1. Front view	134
7.1.2. Rear view	134
7.2. Control Panel	135
8 Installation Instructions	136
8.1. Installation	136
8.1.1. Toner Cartridge and Drum Cartridge	136
8.1.1.1. When to replace the toner cartridge and the drum cartridge	141
8.1.2. Recording Paper	142
8.1.2.1. Using the paper input tray	142
8.1.3. Handset Unit	144
8.1.4. Documents The Unit Can Send	147
8.1.4.1. Using the Scanner Glass	147
8.1.4.2. Using the automatic document feeder	147
8.1.5. Connecting to a computer	148
8.1.6. Installing Multi-Function Station on a computer	148
8.2. Connections	150
9 Operating Instructions	152
9.1. YOUR LOGO	152
9.1.1. To Select Characters with The Dial Keypad	153
9.1.2. To Select Characters Using [] OR []	153
10 Test Mode	154
10.1. Test Functions	154
10.1.1. DTMF Single Tone Transmit Selection	156
10.1.2. Button Code Table	156
11 Service Mode	157
11.1. Programming and Lists	157
11.1.1. Operation	157
11.1.2. Operation Flow	157
11.1.3. Specifications	158
11.1.3.1. Service Mode #884: History	158
11.1.3.2. Service Mode #852: Color Printing Test	159
11.1.4. Service Function Table	159
11.1.5. Memory Clear Specification	162
11.2. User Mode (The list below is an example of the SYSTEM SETUP LIST the unit prints out.)	163
11.3. Service Mode Settings (Example of a printed out list)	165
11.4. History	166
11.4.1. Description of The History Report	167
12 Troubleshooting Guide	168
12.1. User Recoverable Errors	168
12.2. User Recoverable Network Errors	171
12.3. Remote Programming	174
12.3.1. Entering The Remote Programming Mode and Changing Service Codes	175
12.3.2. Program Mode Table	176
12.3.2.1. User Function	176
12.3.2.2. Service Function	178
12.4. Troubleshooting Details	180
12.4.1. Outline	180
12.4.2. Starting Troubleshooting	180
12.4.3. Initialization	181
12.4.4. Simple Check List	182
12.4.5. Simplified Troubleshooting Guide	183
12.4.5.1. Printing	183
12.4.5.2. Jam	184
12.4.6. Call Service Troubleshooting Guide	186
12.4.6.1. CALL SERVICE 1	188
12.4.6.2. CALL SERVICE 2	189
12.4.6.3. CALL SERVICE 3	190
12.4.6.4. CALL SERVICE 4	191
12.4.6.5. CALL SERVICE 5	192
12.4.6.6. CALL SERVICE 6	193
12.4.6.7. CALL SERVICE 11	194
12.4.6.8. CALL SERVICE 12	195
12.4.6.9. CALL SERVICE 13	196
12.4.6.10. CALL SERVICE 14	197
12.4.6.11. CALL SERVICE 15	198
12.4.6.12. CALL SERVICE 16	199
12.4.6.13. CALL SERVICE 17	200
12.4.6.14. CALL SERVICE 18	201
12.4.6.15. CALL SERVICE 19	202
12.4.6.16. CALL SERVICE 20	203
12.4.7. Print Quality	204
12.4.7.1. Blank Print	204
12.4.7.2. All-black Print	205
12.4.7.3. Missing Primary Color	206
12.4.7.4. Light Print	207
12.4.7.5. Repeated Spots or Lines on Print in-line with Each Other	208
12.4.7.6. Dark Vertical Line in Print	209
12.4.7.7. White Horizontal Line or Band in all the Color of a Print	210
12.4.7.8. Mis-transfer, Missing Portions of Toner	211
12.4.7.9. Dirty Background	212
12.4.7.10. Partial Primary Color Dots	213
12.4.7.11. Dark Irregular Streaks in Print	213
12.4.7.12. Primary Color Irregular Streaks	214
12.4.7.13. Ghosting	214
12.4.7.14. Unfused or Partially Fused Printing	215
12.4.7.15. Image is Skewed on the Paper	216
12.4.7.16. Stains on Back of Print	217
12.4.7.17. No Printing on Edge of Print	218
12.4.7.18. Image is not Centered on the Print When it Should Be	219
12.4.8. Jam	220
12.4.8.1. Print Media Problem	220
12.4.8.2. Print Media Skew	221
12.4.8.3. Paper Jam at the Input Tray	222
12.4.8.4. Paper Jams at the Registration Roller	223
12.4.8.5. Paper Jams at the 2nd Transfer Roller	224
12.4.8.6. Paper Jams at the Fuser Unit	225
12.4.8.7. Paper Jam at the Exit Roller	226
12.4.8.8. Wrong Paper Length Jams	227
12.4.8.9. Paper Jams at the Optional Input Tray	228
12.4.8.10. Paper Jam at Optional Automatic Duplex Unit (ADU)	229
12.4.9. Communication Section	230
12.4.9.1. Defective Facsimile Section	231
12.4.9.1.1. Transmit Problem	231
12.4.9.1.2. Sometime There is a Transmit Problem	232
12.4.9.1.3. Receive Problem	233
12.4.9.1.4. The Unit Can Copy, but Cannot Transmit/Receive	234
12.4.10. Special Service Journal Reports	235
12.4.10.1. Journal 2	236
12.4.10.2. Journal 3	237
12.4.10.3. Printout Example	237
12.4.10.4. How to Output the Journal Report	238
12.4.11. Initializing Error	247
12.4.12. Analog Section	248
12.4.12.1. Check Sheet	248
12.4.12.2. Defective ITS (Integrated Telephone System) Section	249
12.4.12.3. Defective TAM Interface Section	250
12.4.13. Operation Panel Section	251
12.4.14. Sensor Section	252
12.4.15. Motor Section	262
12.4.15.1. BK Motor	262
12.4.15.2. Color Motor	263
12.4.15.3. FB (Flatbed) Motor	264
12.4.15.4. ADF Motor (ADF provided model only)	265
12.4.15.5. ADU (Automatic Duplex Unit (Option)) Motor	266
12.4.15.6. Optional Lower Input Tray (OPF Motor)	267
12.4.16. LSU Section	268
12.4.17. CIS Control Section	269
12.4.18. High Voltage Value Check point	271
12.4.19. High Voltage Section	275
12.4.20. USB Section	284
12.4.21. LAN Section	288
12.4.22. Main Board Section	293
12.4.23. PSU (Low Voltage Power Supply Board) Section	296
12.4.23.1. Key Components for Troubleshooting	296
12.4.23.2. Troubleshooting Flow Chart	297
12.4.23.3. Broken Parts Repair Details	299
12.5. Recording Paper Jam	300
12.5.1. When the recording paper has jammed inside of the unit	301
12.5.2. When the recording paper has jammed near the optional input tray	305
12.5.3. When the recording paper is not fed into the unit properly	306
12.6. Document Jams (Automatic Document Feeder)	306
13 Service Fixture & Tools	309
14 Disassembly and Assembly Instructions	310
14.1. First of All	310
14.2. Flow Chart for Disassembly	314
14.2.1. ADF Cover Section	314
14.2.2. FB Unit, ADF Unit and LSU Unit Section	314
14.2.3. Rear Section	315
14.2.4. Accumulator Unit	315
14.2.5. Fuser Section	316
14.3. Disassembly for Main Parts	316
14.3.1. Remove ADF Section (1)	316
14.3.2. Remove ADF Section (2)	317
14.3.3. Remove ADF Section (3)	317
14.3.4. Remove ADF Section (4)	318
14.3.5. Remove Rear Cover	319
14.3.6. Remove Left Cover	319
14.3.7. Remove FB Unit and ADF Unit	320
14.3.8. Remove FB Unit Section	321
14.3.9. Remove FB Inner Section (1)	322
14.3.10. Remove FB Inner Section (2)	322
14.3.11. Remove Toner Sensor Board and Main Drive Unit	323
14.3.12. Remove PSU Shield Cover	324
14.3.13. Remove Front Cover	324
14.3.14. Remove Fuser Unit	325
14.3.15. Remove WTF Sensor Board and Registration and Paper Unit	326
14.3.16. Open Drum Cartridge Cover	326
14.3.17. Remove Accumulator unit	327
14.3.18. Remove DC Motor	327
14.3.19. Remove FTR Home Sensor Board Section	328
14.3.20. Remove Top Cover	328
14.3.21. Remove LSU Unit	329
14.3.22. Remove Right Cover	329
14.3.23. Remove Main Board	330
14.3.24. Remove High Voltage Power Supply Board	330
14.3.25. Remove Color Registration Sensor Board Ass'y	331
14.3.26. Remove Fan Section	331
14.3.27. Remove Low Voltage Power Supply Board	332
14.4. Disassembly for Main Drive Unit	333
14.4.1. Main Drive Unit Disassembly	333
14.4.1.1. Main Drive Motors [No.D1] (Procedure No. D1)	334
14.4.1.2. Fuser Idle Gear [No.D2] (Procedure No. D2)	334
14.4.1.3. Drive Unit Bracket (S), PC Idle Gears, Accumulator Idle Gears and Joint Gear [No.D3] (Procedure No. D3)	335
14.4.1.4. CMY Home Lever, PC Home Lever, OPC Cam Home Position Sensor Board, OPC Gear and Dev.Gear [No.D4] (Procedure No. D3 -> No. D4)	337
14.4.1.5. Waste Toner Box Coupling and Coupling Idle Gear [No.D5] (Procedure No. D-3 -> No. D5)	338
14.4.1.6. Accumulator Drive Cam and Accumulator Cam Idle Gear [No.D6] (Procedure No. D3 -> No. D6)	338
14.4.1.7. Drive Unit Bracket (M) and 6 Gears [No.D7] (Procedure No. D3 -> No. D7)	339
14.4.1.8. Drive Unit Bracket (L) [No.D8] (Procedure No. D3 -> No. D7 -> D8)	340
14.4.1.9. Accumulator Joint Pulley Gear, Feed Pulley Gear and Tension Roller [No.D9] (Procedure No. D3 -> No. D7 -> D8 -> D9)	341
14.4.1.10. BK Changer Clutch Assembly [No.D10] (Procedure No. D3 -> No. D7 -> D8 -> D10)	342
14.4.1.11. Accumulator Drive Clutch and Accumulator Drive Gear Solenoid [No.D11] (Procedure No. D3 -> No. D7 -> D8 -> D11)	343
14.4.1.12. Toner Cartridge Joint Gear [No.D12] (Procedure No. D3 -> No. D7 -> D8 -> D12)	344
14.5. How to Remove STR	345
14.6. Note for Assembling	347
14.6.1. Main Drive Section	347
14.6.2. Accumulator Unit Section	350
14.6.3. Color Registration Sensor Section	351
14.7. Installation Position of the Lead	352
14.7.1. Main Board Section (1)	352
14.7.2. Main Board Section (2)	353
14.7.3. Main Board Section (3)	355
14.7.4. Main Cabinet Section	356
14.7.5. Low Voltage Power Supply Board Section (1)	357
14.7.6. Low Voltage Power Supply Board Section (2)	358
14.7.7. Main Drive Unit Section	359
15 Measurements and Adjustments	361
15.1. Color Registration Skew Adjustment	361
16 Maintenance	364
16.1. Maintenance Items and Component Locations	364
16.1.1. Outline	364
16.1.2. Maintenance Check Items/Component Locations	364
16.1.2.1. User Maintenance	365
16.1.2.2. Service Maintenance	365
16.1.2.2.1. Recommended Maintenance Cycle	365
16.1.2.2.2. Lubrication	365
16.2. Maintenance	366
16.2.1. Cleaning the white plates and glass	366
16.2.2. Cleaning the Document Feeder Rollers	367
16.2.3. Cleaning the paper chute	368
16.3. Terminal Guide of the ICs, Transistors and Diodes	370
16.3.1. Main Board (1)	370
16.3.2. Main Board (2)	371
16.3.3. Toner Sensor Board	371
16.3.4. WTF Sensor Board	371
16.3.5. FB Relay Board	371
16.3.6. Operation Board	372
16.3.7. Optional ADU Board	372
16.3.8. Optional OPF Main Board	372
16.4. How to Replace the Flat Package IC	373
16.4.1. Preparation	373
16.4.2. Flat Package IC Removal Procedure	373
16.4.3. Flat Package IC Installation Procedure	374
16.4.4. Bridge Modification Procedure	374
16.5. Main Board Section	375
16.5.1. NG Example	376
16.6. Test Chart	377
16.6.1. ITU-T No.1 Test Chart	377
16.6.2. ITU-T No.2 Test Chart	378
17 Schematic Diagram	379
17.1. For Schematic Diagram	379
17.2. Main Board	380
17.2.1. Main Board (1)	380
17.2.2. Main Board (2)	384
17.2.3. Main Board (3)	386
17.2.4. Main Board (4)	388
17.2.5. Main Board (5)	390
17.2.6. Main Board (6)	392
17.2.7. Main Board (7)	394
17.2.8. Main Board (8)	396
17.2.9. Main Board (9)	398
17.2.10. Main Board (10)	400
17.2.11. Main Board (11)	402
17.2.12. Main Board (12)	404
17.3. Sensor Board	406
17.4. Scanner Board	407
17.5. Operation Board	408
17.6. High Voltage Power Supply Board	410
17.6.1. High Voltage Power Supply Board (1)	410
17.6.2. High Voltage Power Supply Board (2)	411
17.6.3. High Voltage Power Supply Board (3)	412
17.7. Low Voltage Power Supply Board	413
17.8. Optional ADU Board	414
17.9. Optional OPF Board	415
17.10. Optional Hook Switch Board	416
18 Printed Circuit Board	417
18.1. Main Board	417
18.1.1. Main Board: Component View	417
18.1.2. Main Board: Bottom View	418
18.2. Sensor Board	419
18.2.1. Toner Sensor Board	419
18.2.2. ADF Relay Board	420
18.2.3. ADF Board	420
18.2.4. WTF Sensor Board	420
18.2.5. Cassette Sensor Board	420
18.2.6. FTR Home Position Sensor Board	420
18.2.7. Fuser Board	421
18.2.8. Registration and Paper Sensor Board	421
18.2.9. OPC Home Position Sensor Board	421
18.2.10. Pick-up Home Position Sensor Board	421
18.2.11. Sensor & Solenoid Relay Board	421
18.2.12. CIS Home Position Sensor Board	422
18.2.13. Color Registration Sensor Board	422
18.2.14. Handset Relay Board	422
18.3. Scanner Board	423
18.3.1. FB Relay Board: Component View	423
18.3.2. FB Relay Board: Bottom View	423
18.3.3. CIS Relay Board	424
18.4. Operation Board	425
18.5. High Voltage Power Supply Board	427
18.5.1. High Voltage Power Supply Board: Component View	427
18.5.2. High Voltage Power Supply Board: Bottom View	428
18.6. Low Voltage Power Supply Board	429
18.6.1. Low Voltage Power Supply Board: Component View	429
18.6.2. Low Voltage Power Supply Board: Bottom View	430
18.7. Optional ADU Board	431
18.8. Optional OPF Board	431
18.8.1. OPF Main Board: Component View	431
18.8.2. OPF Main Board: Bottom View	432
18.8.3. OPF Paper Sensor Board	432
18.8.4. OPF Sensor Board	432
18.9. Optional Hook Switch Board	433
19.1. Cabinet, Mechanical and Electrical Parts Location	434
19.1.1. Operation Panel Section	434
19.1.2. Top Cover Section	435
19.1.3. ADF Section	436
19.1.4. ADF Motor Section	437
19.1.5. Bottom Cabinet Section	438
19.1.6. Front Cabinet Section 1	439
19.1.7. Left Side Cabinet Section	440
19.1.8. Rear Cabinet Section 1	441
19.1.9. Rear Cabinet Section 2	442
19.1.10. Main Drive Unit Section 1	443
19.1.11. Main Drive Unit Section 2	444
19.1.12. Main Drive Unit Section 3	445
19.1.13. Main Drive Unit Section 4	446
19.1.14. Fuser Section	447
19.1.15. Right Side Cabinet Section	448
19.1.16. Laser Unit Section	449
19.1.17. Front Cabinet Section 2	450
19.1.18. Rear Cabinet Section 3	451
19.1.19. Cabinet Cover Section	452
19.1.20. Left Side Cover Section	453
19.1.21. Handset Section	454
19.1.22. STR Section	455
19.1.23. Cassette Tray Section	456
19.1.24. KX-FAB318E/X Optional Automatic duplex Unit (ADU) Section	457
19.1.25. KX-FAP317E/X Optional Lower Input Tray (OPF) Section 1	458
19.1.26. KX-FAP317E/X Optional Lower Input Tray (OPF) Section 2	459
19.1.27. KX-FAP317E/X Optional Lower Input Tray (OPF) Section 3	460
19.1.28. Actual Size of Screws and Washers	461
19.1.29. Accessories and Packing Materials	462
19.2. Replacement Parts List	463
19.2.1. CABINET AND ELECTRICAL PARTS	463
19.2.1.1. Operation Panel Section	463
19.2.1.2. Top Cover Section	463

Match case Limit results 1 per page

418

KX-MC6020HX

18.1.2.

Main Board

: Bottom View

+5VD2

GND

R119

C122

L106

L105

R107

C110

R112

R109

C126

L108

R113

R110

C109

L109

R106

Q105

R104

R116

R108

D102

Q201

C243

C245

R205

R207

R209

L206

C204

C203

C205

R252

R239

L237

C230

R237

C234

C250

R240

R258

R236

C233

C232

C247

R253

R210

R212

C202

R206

C226

C227

R231

C216

C217

R211

C222

R220

C218

L212

IC203

L216

L232

R229

R230

L204

R208

IC201

R215

C211

C207

L213

L226

C249

R242

R241

IC204

C248

L225

L217 R227

R226

D200

C1218

C1217

L219

R234

C228

R233

R232

L218

L233

R223

C221

L214

Q10

R32

R33

R36

R34

R35

+7VB

+7VA

+24VC

+24VB

C1214

+24VA

C1216

C1117

C1123

C1168

C1117

C1111

C1105

C701

C710

R713

C1221

C1224

C1222

R900

R911

R895

R902

R898

R904

C1225

+1.2V

GND

+1.5V

+3.3V

+2.5V

R849

C839

R848

R853

R836

R839 R844

C833

CL760

R724

R725

R721

R738

R737

R720

C734

R726

C731

R722

R732

C729

R735

C730

R733

C732

R925

R927

R904

R723

R930

R932

R727

R734

R922

R921

C902

R924

R934

R931

R926

C903

C905

R936

R943

R945

R948

C907

R949

R946

R929

R928

C906

R933

R935

R937

R942

D834

CL700

CL606

CL609

CL610

C1220

C1219

C1148

C1227

C1169

+5VD

GND

R244

C317

C1230

C1235

C1229

C485

C486

L451

R492

L450

C479

C480

C493

C1124

C1156

C1233

C1188

R323

C1185

C436

RA301

RA302

RA303

RA304

RA300

C442

C458

RA318

RA317

RA315

RA316 R321

R317

C440

C438

C464C465

R416

R415

C452

C444

C460

R400

C1180

C1182

R401

C457

C446

C439

C443

RA314

RA313

RA311

RA312 R319

R315

C433

C437

C462

C463

R414

R413

C435

C441

C1174

R402

C1176

C1178

R403

GND

+1.25VTT2

+1.25VTT

GND

R969

R967

R965

R962

R968

R966

R964

R961

C974

R1015

R1014

R1016

C985

C986

C961

C963

C971

C977

C988

C966

C983

R1009

R1006

R1012

R1020

C978

C972

C962

C973

C976

C970

C969

C968

C981

C987

C964

C982

C980

C979

C984

C965

C967

C975

R986

R970

R972

R963

R978

R983

R981

R971

R973

R979

R960

R982

R980

RA963

RA965

RA964

RA966

PbF

PFUP1693Z

R363

R345

C329

C344

C347 C327

C339

C342

C341

C328

C340

C1234

C1232

C337

C343

C338

R355

R359

R357

R362

R358

R361

R366

C346

L379

L380

C309

R388

R389

C310

D454

C315

C482

RA310

R387

L382

C304

C331

C357

C356

R386

R476

C330

R313

R337

C302

R338

C303

L326

R311

C358

C332

R381

C359

R371

C335

C361

R373

C360

R380

R377

L384

L385

L391

L369

L389

L383

L394

L396

R329

R330

R328

C551

R533

R335

C300

C362

C301

C334

C348

C322

C353

R395

R364

+1.2V/BATT

+3.3V/BATT

C333

C349

C354

C1231

L324

R332

R333

R304

R307

C320

IC301

R394

L395

CL311

C326

C307

R390

C311

C352

C325

C363

C351

C324

C350

R365

R314

C321

R393

D300

GND

C323

C319

R392

C318

CLV9

C1137

R465

R464

R463

R462

R461

R460

R459

R458

GND

CL616

CL621

CL675

CL620

CL604

R626

R605

R638

R639

R640

L661

R613

L609

L610

L655

L604

L607

L603

R59

CL617

CL619

CL618

R611

L601

R661

CL642

R606

R612

R650

R646

R678

CL631

CL629

R676

R674

R662

R658

R649

R647

R675

R666

R665

R657

R643

CL625

CL633

CL626

CL636

CL637

C617

C629

C625

C624

C632

C623

C622

C631C612

C611

C630

C626

C619

C618

C627

C628

C960

R1004

R1003

C615

C638

C640

C614

C636

C635

C620

C634

C613

C616

C637

C639

C633

C621

C1003

R994

R992

R977

R974

R990

R988

R995

R997

R999

R1001

R993

R991

R976

R975

R989

R987

R996

R998

R1000

R1002

C1004

L966

C993

C992

L961

C991

R607

R608

C603

C990

L960

CL615

CL612

CL611

CL608

CL607

CL614

L651

L650

C995

C994

L962

L642

L641

L648

L643

C858

R633

R632

R629

R627

C1001

C1000

L965

C999

C997

L963

C998

C996

L964

R823

R824

R822

R768

R777

R781

R763

R770

R780

R761

R764

R776

R760

R762

R767

C1164

KX-MC6020

MAIN BOARD BOTTOM VIEW