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20-146
PC130-7
TESTING AND ADJUSTING
TESTING PROCEDURE FOR
DIODE
a
Test an assembled-type diode (18-pin) or a diode
(2-pin) according to the following procedure.
a
The conductive direction of an assembled-type
diode is shown in the following figure.
a
The conductive direction of a diode is marked on
its surface.
1. When using a digital circuit tester
1) Set the circuit tester in the diode range and
check the indicated value.
a
If an ordinary tester is used, the voltage
of the battery in itself is indicated.
2) Apply the red (+) test pin to the anode (P)
side of the diode and the black (-) test pin to
the cathode (N) side and read the indicated
value.
3) Judge the condition of the diode from the
indicated value.
•
The indicated value does not change:
There is not continuity (Defective).
•
The indicated value changes: There is
continuity (Normal) (Note).
Note) In the case of a silicon diode, the cir-
cuit tester indicates a value of 460 –
600.
2. When using an analog circuit tester
1) Set the circuit tester in the resistance range.
2) Apply the test pins as shown below and
check movement of the pointer.
i)
Apply the red (+) test pin to the anode (P)
side of the diode and the black (-) test pin
to the cathode (N) side.
ii)
Apply the red (+) test pin to the cathode
(N) side of the diode and the black (-) test
pin to the anode (P) side.
3) Judge the condition of the diode from move-
ment of the pointer.
•
The pointer does not move in i) above
but moves in ii): Normal (Moving angle
(Resistance) depends on the type and
measurement range of the circuit tester,
however)
•
The pointer moves in both i) and ii):
Defective (Internal short circuit)
•
The pointer does not move in either of i)
and ii): Defective (Internal disconnection)
TESTING PROCEDURE FOR DIODE
(1)
Summary of Contents for PC130-7
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Page 18: ......
Page 86: ...20 168 PC130 7 TESTING AND ADJUSTING Items related to engine 1 PM CLINIC SERVICE...
Page 87: ...PC130 7 20 169 TESTING AND ADJUSTING Items related to hydraulic equipment 1 PM CLINIC SERVICE...
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Page 161: ...PC130 7 20 313 TROUBLESHOOTING Circuit diagram related to wiper motor 112 1...
Page 163: ...PC130 7 20 315 TROUBLESHOOTING Circuit diagram related to wiper motor 113 1...
Page 165: ...PC130 7 20 317 TROUBLESHOOTING Circuit diagram related to windshield washer motor 114 1...
Page 167: ...PC130 7 20 319 TROUBLESHOOTING Circuit diagram related to wiper motor 115 1...
Page 169: ...PC130 7 20 321 TROUBLESHOOTING Circuit diagram related to wiper motor 116 1...
Page 171: ...PC130 7 20 323 TROUBLESHOOTING Circuit diagram related to swing holding brake solenoid 203 1...
Page 173: ...PC130 7 20 325 TROUBLESHOOTING Circuit diagram related to 2 stage relief solenoid 205 1...
Page 175: ...PC130 7 20 327 TROUBLESHOOTING Circuit diagram related to travel speed shifting solenoid 206 1...
Page 177: ...PC130 7 20 329 TROUBLESHOOTING Circuit diagram related to swing holding brake solenoid 213 1...
Page 179: ...PC130 7 20 331 TROUBLESHOOTING Circuit diagram related to 2 stage relief solenoid 215 1...
Page 181: ...PC130 7 20 333 TROUBLESHOOTING Circuit diagram related to travel speed shifting solenoid 216 1...
Page 183: ...PC130 7 20 335 TROUBLESHOOTING Circuit diagram related to model selection connector 217 1...
Page 185: ...PC130 7 20 337 TROUBLESHOOTING Circuit diagram related to S NET 218 1...
Page 189: ...PC130 7 20 341 TROUBLESHOOTING Circuit diagram related to pump pressure sensor 224 1...
Page 191: ...PC130 7 20 343 TROUBLESHOOTING Circuit diagram related to sensor power supply 226 1...
Page 193: ...PC130 7 20 345 TROUBLESHOOTING Circuit diagram related to engine speed sensor 227 1...
Page 195: ...PC130 7 20 347 TROUBLESHOOTING Circuit diagram related to PC EPC solenoid 232 1...
Page 197: ...PC130 7 20 349 TROUBLESHOOTING Circuit diagram related to PC EPC solenoid 233 1...
Page 199: ...PC130 7 20 351 TROUBLESHOOTING Circuit diagram related to overload pressure sensor 251 1...
Page 201: ......
Page 205: ...PC130 7 20 357 TROUBLESHOOTING Circuit diagram related to fuel control dial 308 1...
Page 207: ...PC130 7 20 359 TROUBLESHOOTING Circuit diagram related to battery relay 315 1...
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Page 233: ...PC130 7 20 419 TROUBLESHOOTING Circuit diagram related to PPC lock solenoid E 8 1...
Page 247: ...PC130 7 20 433 TROUBLESHOOTING Circuit diagram related to swing lock switch E 18 1...
Page 249: ......
Page 253: ...PC130 7 20 439 TROUBLESHOOTING Circuit diagram related to windshield washer motor E 20 1...
Page 255: ...PC130 7 20 441 TROUBLESHOOTING Circuit diagram related to lower windshield wiper E 21 1...
Page 257: ...PC130 7 20 443 TROUBLESHOOTING Circuit diagram related to caution buzzer stop switch E 22 1...
Page 263: ...PC130 7 20 449 TROUBLESHOOTING Circuit diagram related to arm IN oil pressure switch E 25 1...
Page 265: ...PC130 7 20 451 TROUBLESHOOTING Circuit diagram related to arm OUT oil pressure switch E 26 1...
Page 284: ...20 470 PC130 7 TROUBLESHOOTING Circuit diagram related to air conditioner E 32 1...
Page 288: ...20 474 PC130 7 TROUBLESHOOTING Circuit diagram related to air conditioner E 32 1...
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