Komatsu WA900-1 WA900-3 avance Wheel Loader Workshop Repair Service Manual PDF - MKMTSWA900.zip
A full workshop service and repair manual, complete with electrical wiring diagrams, for the Komatsu WA900-1 and WA900-3 avance Wheel Loaders. It contains every technical detail needed to service, troubleshoot, fix, and rebuild these machines just like a professional technician would.
Inside the Komatsu WA900-1, WA900-3 avance workshop service repair manual you'll find:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Troubleshooting and electrical service procedures are combined with detailed wiring diagrams for ease of use.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.
PRODUCT DETAILS:
Total Pages: 7,041 pages
File Format: PDF (Internal Links, Bookmarked, Table of Contents, Searchable, Printable, high quality)
Language: English
CEAM002600 - Wheel Loader WA900-1 Operation & Maintenance Manual.pdf
CEBM002300 - Wheel Loader WA900-1 Shop Manual.pdf
GEN00019-00 - Wheel Loader WA900-3 Field Assembly Manual.pdf
GEN00019-01 - Wheel Loader WA900-3 Field Assembly Manual.pdf
GEN00019 (Replaces SEAW001400) - Wheel Loader WA900-3 Field Assembly Manual.pdf
PEN00073-02 - Wheel Loader WA900-3 avance Operation & Maintenance Manual.pdf
PEN00073 - Avance Loader WA900-3 Operation & Maintenance Manual.pdf
SEAM018701 - Wheel Loader WA900-3 avance Operation & Maintenance Manual.pdf
SEBM008002 - Wheel Loader WA900-1 Shop Manual.pdf
SEBM013512 - Avance Loader WA900-3 Shop Manual.pdf
SEBM013512 - Wheel Loader WA900-3 avance Shop Manual.pdf
SEBM013516 - Wheel Loader WA900-3 avance Shop Manual.pdf
TEN00068-00 - Wheel Loader WA900-3 avance Operation & Maintenance Manual.pdf
MAIN SECTIONS
COVER....1
CONTENTS....2
01 GENERAL....31
GENERAL ASSEMBLY DRAWING....32
SPECIFICATIONS....33
WEIGHT TABLE....36
LIST OF LUBRICANT AND WATER....38
10 STRUCTURE AND FUNCTION....40
POWER TRAIN....41
POWER TRAIN SYSTEM....42
ENGINE CONTROL....44
SERVO CYLINDER....45
RADIATOR AND COOLER....49
DAMPER....52
TORQUE CONVERTER AND TRANSMISSION PIPING....53
TRANSMISSION HYDRAULIC SYSTEM DIAGRAM....54
TRANSMISSION HYDRAULIC CIRCUIT DIAGRAM....55
TORQUE CONVERTER....56
TRANSMISSION....61
TRANSFER....71
TRANSMISSION CONTROL VALVE....72
TORQUE CONVERTOR OIL COOLER....89
DRIVE SHAFT....90
CENTER SUPPORT....91
AXLE....92
FINAL DRIVE....97
AXLE MOUNT....98
CENTER HINGE PIN....100
TIRE AND WHEEL....101
STEERING PIPING DIAGRAM....102
STEERING COLUMN....105
JOYSTICK LINKAGE....106
STEERING PUMP....107
SWITCH PUMP....113
STEERING DEMAND VALVE....124
STEERING UNIT (ORBIT-ROLL VALVE)....135
PROPORTIONAL SOLENOID VALVE....138
EPC VALVE....139
ROTARY VALVE....140
TOW-WAY RESTRICTOR VALVE....143
DIVERTER VALVE....144
BRAKE PIPING....148
BRAKE CIRCUIT DIAGRAM....150
BRAKE VALVE....154
CHARGE VALVE....164
ACCUMULATOR (FOR BRAKE)....168
SLACK ADJUSTER....169
BRAKE....172
PARKING BRAKE....173
SPRING CYLINDER....176
PARKING BRAKE SOLENOID VALVE....177
HYDRAULIC PIPING....178
WORK EQUIPMENT HYDRAULIC CIRCUIT DIAGRAM....181
WORK EQUIPMENT LEVER LINKAGE....193
HYDRAULIC TANK....194
MAIN PISTON PUMP....197
ES VALVE (ENGINE SENSING VALVE)....208
SERVO VALVE....210
PPC VALVE (PROPORTIONAL PRESSURE VALVE)....213
PPC RELIEF VALVE....217
ACCUMULATOR (FOR PPC VALVE)....218
MAIN CONTROL VALVE....219
COOLING FAN HYDRAULIC PIPING....243
COOLING FAN HYDRAULIC CIRCUIT DIAGRAM....244
PRIORITY VALVE....245
COOLING FAN MOTOR....246
LUBRICATION OF WORK EQUIPMENT....250
WORK EQUIPMENT LINKAGE....252
BUCKET POSITIONER AND BOOM KICK-OUT....254
OPERATION OF PROXIMITY SWITCH....256
CAB....260
ROPS CANOPY....261
AIR CONDITIONER....262
ELECTRIC CIRCUIT DIAGRAM....265
MACHINE MONITOR SYSTEM....266
MAIN MONITOR....268
MAINTENANCE MONITOR....274
MULTI MONITOR SYSTEM (IF EQUIPPED)....276
ENGINE STARTING CIRCUIT....298
ENGINE STOP CIRCUIT....301
PREHEATING CIRCUIT....302
ELECTRICAL TRANSMISSION CONTROL....303
KICK-DOWN, HOLD SWITCH....306
JOYSTICK STEERING SYSTEM....307
TRANSMISSION AND JOYSTICK STEERING CONTROLLER....309
AJSS (ADVANCED JOYSTICK STEERING SYSTEM)....311
TRANSMISSION AND JOYSTICK STEERING CONTROLLER....315
ELECTRIC PARKING BRAKE CONTROL....317
BRAKE COOLING SYSTEM (IF EQUIPPED)....326
55? SPECIFICATION....335
EMERGENCY ENGINE STOP (FOR RIO TINTO)....339
HYDRAULIC OIL LEVEL SENSOR (FOR RIO TINTO)....342
BATTERY AND STARTER ISOLATOR, BATTERY JUMP START (FOR RIO TINTO)....345
20 TESTING AND ADJUSTING....348
STANDARD VALUE TABLE FOR ENGINE....349
STANDARD VALUE TABLE FOR CHASSIS....350
STANDARD VALUE TABLE FOR ELECTRICAL PARTS....356
TESTING AND ADJUSTING....374
TABLE OF TOOLS FOR TESTING, ADJUSTING, AND TROUBLESHOOTING....375
MEASURING ENGINE SPEED....376
MEASURING EXHAUST GAS COLOR....378
ADJUSTING VALVE CLEARANCE....379
MEASURING COMPRESSION PRESSURE....380
MEASURING BLOW-BY PRESSURE....381
TESTING AND ADJUSTING FUEL INJECTION TIMING....382
MEASURING ENGINE OIL PRESSURE....384
MEASURING EXHAUST TEMPERATURE....385
MEASURING AIR SUPPLY PRESSURE (BOOST PRESSURE)....386
TESTING AND ADJUSTING ALTERNATOR BELT TENSION....387
TESTING AND ADJUSTING BELT TENSION FOR AIR CONDITIONER COMPRESSOR....388
MEASURING ACCELERATOR PEDAL OPERATING EFFORT....389
MEASURING ACCELERATOR PEDAL OPERATING ANGLE....390
ADJUSTING FUEL CONTROL CABLE, LINKAGE, AND SERVO CYLINDER....391
ADJUSTING ENGINE STOPPING MOTOR CABLE....393
TESTING AND ADJUSTING TORQUE CONVERTER AND TRANSMISSION OIL PRESSURE....395
PROCEDURE FOR OPERATING EMERGENCY STEERING SPOOL WHEN TRANSMISSION VALVE FAILS....398
TESTING AND ADJUSTING STEERING OIL PRESSURE....400
TESTING AND ADJUSTING EMERGENCY STEERING OIL PRESSURE....401
BLEEDING AIR FROM STEERING CIRCUIT....403
TESTING AND ADJUSTING STEERING STOP VALVE....404
TESTING AND ADJUSTING STEERING STOPPER BOLT....405
TESTING AND ADJUSTING STEERING LEVER ANGLE SENSOR AND FRAME ANGLE SENSOR....406
TESTING WHEEL BRAKE PERFORMANCE....407
TESTING WHEEL BRAKE OIL PRESSURE DROP....408
MEASURING WEAR OF WHEEL BRAKE DISC....410
TESTING AND ADJUSTING ACCUMULATOR CHARGE CUT-IN AND CUT-OUT PRESSURE....411
BLEEDING AIR FROM WHEEL BRAKE CIRCUIT....413
TESTING PARKING BRAKE PERFORMANCE....414
MEASURING PARKING BRAKE SOLENOID OUTPUT PRESSURE....415
CHECKING AND ADJUSTING PARKING BRAKE PAD ....416
TESTING AND ADJUSTING PPC PRESSURE....418
ADJUSTING PPC VALVE LINKAGE....420
TESTING AND ADJUSTING WORK EQUIPMENT HYDRAULIC PRESSURE....421
BLEEDING AIR FROM PISTON PUMP....423
BLEEDING AIR FROM WORK EQUIPMENT CIRCUIT....424
ADJUSTING WORK EQUIPMENT LEVER LINKAGE....425
RELEASING REMAINING PRESSURE IN HYDRAULIC CIRCUIT....427
TESTING AND ADJUSTING BUCKET PROXIMITY SWITCH....428
TESTING AND ADJUSTING BOOM PROXIMITY SWITCH....429
TESTING PROXIMITY ACTUATION PILOT LAMP....430
ADJUSTING SPEEDOMETER MODULE OF MAIN MONITOR....431
ADJUSTING JOYSTICK LEVER POTENTIOMETER....432
ADJUSTING JOYSTICK LEVER NEUTRAL DETECTION SWITCH....433
TROUBLESHOOTING....434
POINTS TO REMEMBER WHEN TROUBLESHOOTING....435
SEQUENCE OF EVENTS IN TROUBLESHOOTING....436
POINTS TO REMEMBER WHEN CARRYING OUT MAINTENANCE....437
CHECKS BEFORE TROUBLESHOOTING....445
TYPES AND LOCATIONS OF CONNECTORS....446
CONNECTOR ARRANGEMENT DIAGRAM....453
WIRING TABLE FOR CONNECTOR PIN NUMBERS....459
T-ADAPTER BOX AND T-ADAPTER TABLE....492
EXPLANATION OF FUNCTIONS OF ELECTRIC CONTROL MECHANISM....495
METHOD OF DISPLAYING ACTION CODE AND FAILURE CODE....500
CHART OF ACTION CODES AND FAILURE CODES, AND RE-ENACTION....502
TRANSMISSION CONTROLLER LED DISPLAY....507
METHOD OF USING JUDGEMENT TABLE....508
METHOD OF USING TROUBLESHOOTING CHARTS....509
METHOD OF USING MATRIX TROUBLESHOOTING TABLES....511
TROUBLESHOOTING OF ENGINE SYSTEM (S MODE)....513
METHOD OF USING TROUBLESHOOTING CHARTS....514
S-1 STARTING PERFORMANCE IS POOR (STARTING ALWAYS TAKES TIME)....518
S-2 ENGINE DOES NOT START....519
? ENGINE DOES NOT TURN....519
? ENGINE TURNS BUT NO EXHAUST GAS COMES OUT (FUEL IS NOT BEING INJECTED)....520
? EXHAUST GAS COMES OUT BUT ENGINE DOES NOT START (FUEL IS BEING INJECTED)....521
S-3 ENGINE DOES NOT PICK UP SMOOTHLY (FOLLOW-UP IS POOR)....522
S-4 ENGINE STOPS DURING OPERATIONS....523
S-5 ENGINE DOES NOT ROTATE SMOOTHLY (HUNTING)....524
S-6 ENGINE LACKS UOTPUT (NO POWER)....525
S-7 EXHAUST GAS IS BLACK (INCOMPLETE COMBUSTION)....526
S-8 OIL CONSUMPTION IS EXCESSIVE (OR EXHAUST GAS IS BLUE)....527
S-9 OIL BECOMES CONTAMINATED QUICKLY....528
S-10 FUEL CONSUMPTION IS EXCESSIVE....529
S-11 OIL IS IN COOLING WATER, OR WATER SPURTS BACK, OR WATER LEVEL GOES DOWN....530
S-12 OIL PRESSURE LAMP LIGHTS UP (DROP IN OIL PRESSURE)....531
S-13 OIL LEVEL RISES....532
S-14 WATER TEMPERATURE BECOMES TOO HIGH (OVERHEATING)....533
S-15 ABNORMAL NOISE IS MADE....534
S-16 VIBRATION IS EXCESSIVE....535
TROUBLESHOOTING OF TRANSMISSION CONTROL SYSTEM (T MODE)....536
JUDGEMENT TABLE FOR TRANSMISSION CONTROL SYSTEM RELATED PARTS....537
ACTION TAKEN BY CONTROLLER WHEN ABNORMALITY OCCURS AND PROBLEMS ON MACHINE....539
ELECTRICAL CIRCUIT DIAGRAM FOR TRANSMISSION CONTROL SYSTEM....547
T-1 FAILURE CODE [10] (SHORT CIRCUIT, DISCONNECTION, SHORT CIRCUIT WITH POWER SOURCE IN BACKUP LAMP RELAY) IS DISPLAYED....551
STEERING WHEEL SPECIFICATION, STEERING WHEEL AND JOYSTICK STEERING SPECIFICATION....551
T-2 FAILURE CODE [10] (SHORT CIRCUIT, DISCONNECTION, SHORT CIRCUIT WITH POWER SOURCE IN BACKUP LAMP RELAY) IS DISPLAYED....552
AJSS (ADVANCED JOYSTICK STEERING SYSTEM) SPECIFICATION....552
T-3 FAILURE CODE [12] (SHORT CIRCUIT, DISCONNECTION, SHORT CIRCUIT WITH POWER SOURCE IN F SOLENOID) IS DISPLAYED....553
T-4 FAILURE CODE [13] (SHORT CIRCUIT, DISCONNECTION, SHORT CIRCUIT WITH POWER SOURCE IN R SOLENOID) IS DISPLAYED....554
T-5 FAILURE CODE [14] (SHORT CIRCUIT, DISCONNECTION, SHORT CIRCUIT WITH POWER SOURCE IN 1ST SOLENOID) IS DISPLAYED....555
T-6 FAILURE CODE [15] (SHORT CIRCUIT, DISCONNECTION, SHORT CIRCUIT WITH POWER SOURCE IN 2ND SOLENOID) IS DISPLAYED....556
T-7 FAILURE CODE [16] (SHORT CIRCUIT, DISCONNECTION, SHORT CIRCUIT WITH POWER SOURCE IN 3RD SOLENOID) IS DISPLAYEED....557
T-8 FAILURE CODE [19] (SHORT CIRCUIT, DISCONNECTION IN JOYSTICK DIRECTIONAL SWITCH SYSTEM) IS DISPLAYED....558
T-9 FAILURE CODE [20] (SHORT CIRCUIT, DISCONNECTION IN DIRECTIONAL SWITCH SYSTEM) IS DISPLAYED....559
STEERING WHEEL SPECIFICATION, STEERING WHEEL AND JOYSTICK STEERING SPECIFICATION....559
T-10 FAILURE CODE [20] (SHORT CIRCUIT OR DISCONNECTION IN JOYSTICK DIRECTIONAL SWITCH SYSTEM) IS DISPLAYED....562
AJSS (ADVANCED JOYSTICK STEERING SYSTEM) SPECIFICATION....562
T-11 FAILURE CODE [21] (SHORT CIRCUIT, DISCONNECTION IN RANGE SWITCH SYSTEM) IS DISPLAYED....563
STEERING WHEEL SPECIFICATION, STEERING WHEEL AND JOYSTICK STEERING SPECIFICATION....563
T-12 FAILURE CODE [21] (SHORT CIRCUIT OR DISCONNECTION IN JOYSTICK SHIFT-UP/SHIFT-DOWN SWITCH SYSTEM) IS DISPLAYED....566
T-13 FAILURE CODE [22] (DISCONNECTION IN TRAVEL SPEED SENSOR) IS DISPLAYED....567
T-14 FAILURE CODE [23] (SHORT CIRCUIT, DISCONNECTION IN ENGINE SPEED SENSOR SYSTEM) IS DISPLAYED....568
T-15 KICKDOWN SWITCH SIGNAL SYSTEM AND HOLD SWITCH SIGNAL SYSTEM....569
T-16 SHIFT-DOWN SWITCH SIGNAL SYSTEM AND SHIFT-UP SWITCH SIGNAL SYSTEM....570
T-17 TRANSMISSION CUT-OFF SIGNAL SYSTEM....571
T-18 NEUTRALIZER SIGNAL SYSTEM....572
T-19 BUZZER SIGNAL SYSTEM....573
T-20 NETWORK SYSTEM....574
T-21 TRANSMISSION CONTROLLER POWER SOURCE SYSTEM....575
T-22 SHORT CIRCUIT IN TRAVEL SPEED SENSOR SYSTEM....576
T-23 ABNORMALITY IN MACHINE SELECTION WIRING HARNESS....577
TROUBLESHOOTING OF MAIN MONITOR SYSTEM (M MODE)....578
TROUBLE DATA DISPLAY....580
ELECTRICAL CIRCUIT DIAGRAM FOR MAIN MONITOR SYSTEM....582
M-1 MAIN MONITOR DOES NOT WORK....584
M-2 WHEN STARTING SWITCH IS TURNED ON (WITHIN 3 SECONDS) AND ENGINE IS STARTED IMMEDIATELY, ALL LAMPS STAY LIGHTED UP....585
M-3 SPEEDOMETER DISPLAY DOES NOT WORK PROPERLY....586
M-4 ABNORMALITY IN SHIFT INDICATOR....587
a) DISPLAYS N EVEN WHEN DIRECTIONAL LEVER IS AT F....587
b) DISPLAYS N EVEN WHEN DIRECTIONAL LEVER IS AT R....587
c) DOES NOT DISPLAY N EVEN WHEN DIRECTIONAL LEVER IS AT N (DISPLAY 1ST-3RD)....588
d) DOES NOT DISPLAY 1ST EVEN WHEN GEAR SHIFT LEVER IS AT 1ST POSITION (DIRECTIONAL LEVER IS AT F OR R POSITION)....588
e) DOES NOT DISPLAY 2ND EVEN WHEN GEAR SHIFT IS AT 2ND POSITION (DIRECTION LEVER IS AT F OR R POSITION)....588
f) DOES NOT DISPLAY 3RD EVEN WHEN THE GEAR SHIFT IS AT 3RD POSITION (DIRECTION LEVER IS AT F OR R POSITION)....589
M-5 HIGH BEAM DISPLAY DOES NOT LIGHT UP....590
M-6 TURN SIGNAL DISPLAY DOES NOT LIGHT UP....591
a) L.H. TURN SIGNAL DISPLAY DOES NOT LIGHT UP....591
b) R.H. TURN SIGNAL DISPLAY DOES NOT LIGHT UP....591
M-7 ABNORMALITY IN PARKING DISPLAY....592
a) PARKING LAMP DISPLAY DOES NOT LIGHT UP....592
b) PARKING LAMP DISPLAY STAYS LIGHTED UP....592
M-8 ABNORMALITY IN PREHEATING SYSTEM....593
a) DOES NOT CARRY OUT PREHEATING....593
b) ALWAYS CARRIES OUT PREHEATING FOR 45 SECONDS ....594
c) PREHEATING STAYS ON....594
d) PREHEATING TIME BECOMES SHORTER, OR THERE IS VARIATION....595
M-9 NIGHT LIGHTING DOES NOT LIGHT UP....597
M-10 ABNORMALITY IN FRONT WORKING LAMP....598
a) NEITHER MONITOR DISPLAY NOR FRONT WORKING LAMP LIGHT UP....598
b) WORKING LAMP LIGHTS UP BUT MONITOR DISPLAY DOES NOT LIGHT UP....598
c) MONITOR DISPLAY LIGHTS UP BUT FRONT WORKING LAMP DOES NOT LIGHT UP....598
M-11 ABNORMALITY IN REAR WORKING LAMP....600
a) NEITHER MONITOR DISPLAY NOR REAR WORKING LAMP LIGHT UP ....600
b) REAR WORKING LAMP LIGHTS UP BUT MONITOR DISPLAY DOES NOT LIGHT UP ....600
c) MONITOR DISPLAY LIGHTS UP BUT REAR WORKING LAMP DOES NOT LIGHT UP....600
M-12 ABNORMALITY IN TRANSMISSION CUT-OFF....602
a) WHEN MONITOR SWITCH (TRANSMISSION CUT-OFF SWITCH) IS PRESSED, CUT-OFF FUNCTION IS NOT SWITCHED AND DISPLAY DOES NOT CHANGE....602
b) WHEN MONITOR SWITCH (TRANSMISSION CUT-OFF SWITCH) IS OFF, MONITOR DISPLAY GOES OUT BUT CUT-OFF FUNCTION IS ACTUATED WHEN PEDAL IS DEPRESSED....602
c) WHEN MONITOR DISPLAY IS TURNED OFF (TRANSMISSION CUT-OFF SWITCH TURNED OFF), CUT-OFF FUNCTION IS ALWAYS ACTUATED....602
d) CUT-OFF FUNCTION IS ALWAYS ACTUATED REGARDLESS OF MONITOR DISPLAY (TRANSMISSION CUT-OFF SWITCH ON OR OFF)....602
e) MONITOR DISPLAY LIGHTS UP (TRANSMISSION CUT-OFF SWITCH TURNED ON), BUT CUT-OFF FUNCTION IS NOT ACTUATED....603
M-13 ABNORMALITY IN LOW IDLING SELECTION....604
a) WHEN MONITOR SWITCH (LOW IDLE SELECTOR SWITCH) IS TURNED ON, THE LOW IDLING SPEED DOES NOT RISE AND DISPLAY DOES NOT CHANGE ....604
b) WHEN THE MONITOR SWITCH (LOW IDLE SELECTOR SWITCH) IS TURNED ON, THE MONITOR LIGHTS UP BUT THE LOW IDLING SPEED DOES NOT RISE....604
c) WHEN THE MONITOR SWITCH (LOW IDLE SELECTOR SWITCH) IS TURNED OFF, THE MONITOR GOES OFF BUT THE LOW IDLING SPEED DOES NOT LOWER....605
M-14 ABNORMALITY IN EMERGENCY STEERING NORMAL DISPLAY....606
EMERGENCY STEERING NORMAL DISPLAY DOES NOT LIGHT UP....606
M-15 ABNORMALITY IN EMERGENCY STEERING ACTUATION DISPLAY....607
a) EMERGENCY STEERING ACTUATION DISPLAY DOES NOT LIGHT UP....607
b) EMERGENCY STEERING ACTUATION DISPLAY STAYS LIGHTED UP....607
M-16 ABNORMALITY IN PARKING BRAKE DRAGGING WARNING....608
a) WHEN PARKING BRAKE IS APPLIED, BUZZER SOUNDS (INTERMITTENTLY) AND CAUTION LAMP FLASHES EVEN WHEN DIRECTIONAL LEVER IS AT N....608
b) WHEN PARKING BRAKE IS APPLIED, BUZZER DOES NOT SOUND AND CAUTION LAMP DOES NOT LIGHT UP EVEN WHEN DIRECTIONAL LEVER IS AT POSITION OTHER THAN N....608
M-17 ABNORMALITY IN PARKING BRAKE DRAGGING WARNING (WHEN JOYSTICK STEERING MODE (OP))....610
a) WHEN PARKING BRAKE IS APPLIED, BUZZER SOUNDS (INTERMITTENTLY) AND CAUTION LAMP FLASHES EVEN WHEN DIRECTIONAL LEVER IS AT N....610
b) WHEN PARKING BRAKE IS APPLIED, BUZZER DOES NOT SOUND AND CAUTION LAMP DOES NOT LIGHT UP EVEN WHEN DIRECTIONAL LEVER IS AT POSITION OTHER THAN N....610
M-18 WHEN PARKING BRAKE DRAGGING WARNING IS GIVEN, BUZZER AND CAUTION LAMP ARE ACTUATED CONTINUOUSLY, OR THEY ARE NOT ACTUATED....612
a) ACTUATED CONTINUOUSLY....612
b) NOT ACTUATED....612
M-19 ABNORMALITY IN BUZZER....613
a) BUZZER DOES NOT SOUND WHEN STARTING SWITCH IS AT ON (FOR 3 SECONDS) (DURING SELF-CHECK)....613