Order Description Monitored Result Unit Remarks
1 Hour Meter {{{{{ h Standard Mode
2 Trip 1 {{{{{ h Standard Mode (Subtraction)
3 Trip 2 {{{{{ h Standard Mode (Subtraction)
4 Engine Actual Speed n {{{{ min-1 User Mode (Required to set in the Dr. ZX service mode) 5 Hydraulic Oil
Tempera-ture
Possible to display 10 Pump 1 Delivery
Pres-sure
2 {{ MPa Possible to display 11 Pump 2 Delivery
Pres-sure
17 Boom Raise Pilot Pres-sure
9 {{ MPa Possible to display 18 Arm Roll-In Pilot
Pres-sure
A {{ MPa Possible to display 19 Swing Control Pilot
Pressure
b {{ MPa Possible to display 20 Travel Control Pilot
Pressure
c {{ MPa Possible to display 21 Front Att. Operation d {{ 0: Not Operating
1: Operating
Possible to display 22 Att. Control Pressure E {{ MPa Possible to display
Possible to display
Dr. ZX is a troubleshooting tool to diagnose the elec-tronic control system including the MC (main Control-ler) and ICX (Information ControlControl-ler). When Dr. ZX is connected to either the MC or the ICX, it displays whether the controllers and sensors operate normally in the form of fault codes (Self-Diagnosing Result Dis-play Function).
In addition, Dr. ZX can display the inputs from sensors and switches to the MC and/or the outputs to actua-tors such as solenoid valves from the MC in real time while operating the machine (Monitor Display Func-tion).
NOTE: This group describes how to operate Dr.
ZX connected to the MC. Refer to Group 7
“ICX” for operation of Dr. ZX connected to the ICX.
T178-01-02-006
ZAXIS225US:
T1SM-01-02-006
Dr. ZX Connector (ICX) (Located at Backside of Sheet)
Dr. ZX Connector (MC) Fuse Box
Dr. ZX Connector (ICX)
(Located at Back-side of Sheet)
Dr. ZX Connector (MC) Fuse Box
Palm
（Dr. ZX）
Hot Sync Cable
Operation
1. Connect palm (Dr. ZX) to the diagnosis connec-tors (MC and ICX) located in the cab, using Hot Sync cable and battery box cable.
2. Turn the key switch ON, or start the engine.
3. When the palm power is turned ON, palm dis-plays the following screens in order.
3-1. Title Screen
Select the Dr. ZX icon 3-2. Select Kind Screen 3-3. Menu Screen
Select the Start.
3-4. Model Name Screen
(Example) Model: ZX200/ZX225USR 3-5. Function Selection Screen
NOTE: Special functions allow the ECO and WU deactivation. (Refer to T5-1-14)
4. Select Self-Diagnostic Results. Then, continue to operate palm by following instructions to be dis-played at the screen bottom hereafter.
NOTE: Refer to the Dr. ZX Operation Manual for the detailed operation of Dr. ZX.
Title Screen Start
Model Name Confirmation
· Check harness
· Check fuse code and serial No.
Self-diagnostic Result is displayed
Self-diagnostic Result by control-ler is displayed
Self-Diagnosing Result Display Function
Replace software
Retry B
Monitor Special Function Select
function
Select data to be monitored
Fault Code Trouble Cause
Abnormal A/D Conversion
• Faulty MC
04 Abnormal Sensor Voltage • Faulty MC
• Faulty Harness
• Faulty Sensor 06 Abnormal EC Sensor • Faulty MC
• Faulty Harness
• Faulty EC Sensor 07 Abnormal Engine Control Dial Angle • Faulty MC
• Faulty Harness
• Faulty Engine Control Dial 10
11
Abnormal Pump 1 Delivery Pressure Abnormal Pump 2 Delivery Pressure
• Faulty MC
• Faulty Harness
• Faulty Pump Delivery Pressure Sensor 12
13
Abnormal Pump1 Pump Control Pressure Abnormal Pump2 Pump Control Pressure
• Faulty MC
• Faulty Harness
• Faulty Pump Control Pressure Sensor 14
15 16 18
Abnormal Swing Pilot Pressure Abnormal Boom Raise Pilot Pressure Abnormal Arm Roll-In Pilot Pressure Abnormal Travel Pilot Pressure
• Faulty MC
• Faulty Harness
• Faulty Pilot Pressure Sensor 19 Abnormal Hydraulic Oil Temperature • Faulty MC
• Faulty Harness
• Faulty Hydraulic Oil Temperature Sensor
(Blank)
DR. ZX displays the input signals from the switches and sensors to the MC and the control signals to the actuators from the MC.
Item Data Unit
Pump 1 Delivery Pressure Input signals from pump 1 delivery pressure sensor MPa Pump 1 Pump (Flow)
Con-trol Pressure
Input signals from pump 1control pressure sensor MPa Pump 2 Delivery Pressure Input signals from pump 2 delivery pressure sensor MPa Pump 2 Pump (Flow)
Con-trol Pressure
Input signals from pump 2control pressure sensor MPa
Pump 2 Max. Displacement cm3
Engine Target Speed Target speed when loaded. Approx. 150 min-1 differs from speed when unloaded.
min-1 Engine Actual Speed Input signal from N sensor min-1 Deviation in Engine Speed
(Engine Speed Differential)
Calculated Value
(Target Engine Speed - Actual Engine Speed)
min-1
EC Angle Input signal from EC sensor V
Dial Angle Input signal from engine control dial V Boom Raise Pilot Pressure Input signal from pressure sensor (boom raise) MPa Arm Roll-In Pilot Pressure Input signal from pressure sensor (Arm Roll-In) MPa Swing Control Pressure Input signal from pressure sensor (swing) MPa Travel Control Pressure Input signal from pressure sensor (travel) MPa Front Att. Operation Input signal from pressure sensor (front att.) FR Hydraulic Oil Temperature Input signal from oil temperature sensor °C E/P/HP Mode Switch Power mode switch selection status E, P, HP Auto-Idle/Auto-Accel
Switch
Auto-Idle/Auto-Acceleration selector selection status AI, AA Travel Mode Travel mode switch selection status Lo, Hi Power Digging (Boost)
Switch
Power digging switch selection status Pd
Key Switch Key switch selection status Ky
Work mode Work mode switch selection status STD, ATT
ATT. Mode BU, CS, CL, HB
Engine Learning Status Done, Undone,
Aborted Ky Pump 2 Proportional
Sole-noid Valve Output
Control signal to max. pump 2 flow rate limit solenoid valve
MPa Pump Torque Proportional
Solenoid Valve Output
Control signal to torque control solenoid valve MPa
Item Data Unit
****Arm Flow Rate Proportional So-lenoid Valve Output
Control signal to solenoid valve SE MPa Arm Regenerative Proportional
So-lenoid Valve Output
Control signal to solenoid valve SC MPa
***Boom Damper P/S Valve Output (BDMO)
Control signal to boom electronic cushion sole-noid valve
MPa Power Digging (Boost) Control
Pres-sure
Control signal to solenoid valve SG MPa Travel Motor Control Pressure Control signal to solenoid valve SI MPa
EC Motor Position step
Optional
Item Data Unit
Optional Pump 3 Delivery Pressure Input signal from pump 3 delivery pressure sen-sor
MPa
Boom Cylinder Bottom Pressure MPa
Boom Cylinder Rod Pressure MPa
Arm Roll-Out Pilot Pressure Input signal from pressure sensor (arm roll-out) MPa ATT. Control Pressure Input signal from pressure sensor (auxiliary) MPa
Boom Angle V
Arm Angle V
Pump 1 Max. Displacement cm3
*Boom Dampener Switch OFF, SOFT, HARD
Pump 1 Proportional Solenoid Valve Output
Control signal to pump 1 flow rate control sole-noid valve
MPa ATT. Proportional Solenoid Valve
Output
MPa
*Boom Dampener Proportional Valve Output
MPa
Travel/Swing/Load Alarm Tr, Sw, Load
Initial **ML Setting Unf, Done, Abrt,
Und
Initial Boom-Angle Setting Unf, Done, Abrt,
Und NOTE: ML specification is only available in
Japa-nese domestic market.
* Available for only ZX200 class and ZAXIS225USR.
** Initial boom electronic cushion setting is
NOTE: *** Available for ZAXIS225US (Up to serial No. 104908).
**** Available for ZX200, 225 class
(Up to serial No.104678) and ZX230 class (Up to serial No. 010326)
NOTE: The following explanation exemplifies the transition diagrams for ZAXIS200.
Start the service software in the operation mode
If the following screen appears, you are in the operation mode.
Select Special Function.
T178-05-01-013
Select a special function
Select the function you want to execute.
T178-05-01-168
Special function
Select Execute to execute the function.
WU deactivation
T178-05-01-030 T178-05-01-031
ECO control deactivation
T178-05-01-032 T178-05-01-033
Select ESC to return to Fig. A.
Select ESC to return
to Fig. B. Select ESC to return
to Fig. B.
Select ESC to return
to Fig. B. Select ESC to return
to Fig. B.
Execute Execute
Fig. A Fig. B