Toyotomi TAN/TAG-A28EWI Service Manual page 25

TAN/TAG-A53EWI
CHECK A FOLLOWING STEPS
〔fig. 8〕Voltage of Power module
PCB(TAG main)
DC22V±3V
−
7
Measure both voltages as follows
without taking off the connectors.
between 7 in the 15 and 1
in the 16 approx. DC 12V ± 2V
between 6 in the 16 and 7
approx. DC 22V ± 3V
METHOD OF CHECK
DC current detection and in case of irregular work of compressor
Flow Chart
check the damage of piping, excess gas
check the resistance of power module
check the voltage (230V) between
1 and 2 in terminal of TAG, and
check the voltage of power module
accident of compressor
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TROUBLESHOOTING GUIDE
DC12V±2V
＋
＋
−
15
16
Both power module
and PCB (TAG main)
are normal
[see fig.7]
NO
normal accident of power module
YES
[see fig.8]
NO
take off the connectors 15 & 16
normal
YES
check the voltage (230V) between
1 and 2 in terminal of TAG, and
check the voltage of power module
accident of PCB(TAG main)
〔fig. 9〕Resistance of PCB(TAG main)
PCB(TAG main)
over 1kΩ
−
7
Measure both resistances as follows
after taking off the connectors.
between 7 in the 16 and 1 in the
15 approx. over 1kΩ between 6
in the 15 and 7 approx. over 1kΩ
NO
normal
YES
– 24 –
over 1kΩ
＋
＋
−
15
16
PCB(TAG main) is normal.
[see fig.9]
accident of power module