Esco Airstream PCR-3A, Руководство по обслуживанию

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• Unit must be turned on to perform this test.
• See Layout A at the end of this section to locate the SMPS.
It is inside the electrical panel and covered by a stainless
steel box.
Defective power supply
• Checking SMPS output: Disconnect the 5-pin connector
attached to the SMPS output then measure the DC
voltage between Red (pin 1) and White (pin 2) cables on
the SMPS side (see Fig. 1.7).
(SMPS) (for PCR only)
• The voltage should be in range of +7.5 VDC ± 10%.
• If out of range, please check incoming power to the SMPS
Molded cord into SMPS — check terminal where the cord
is connected. The input of SMPS should be 230 VAC ±10%
for PCR-XA1/3 or 115 VAC ± 10% for PCR- XA2/4. If input
is correct but output is not, then replace the SMPS.
Cabinet does not
start (LCD, button,
fan, light, and UV
Fig 1.8
Fig 1.7
are all inoperative)
Connection problem to
main board
(for PCR only)
• See Layout A at the end of this section to locate the main
board at electrical panel.
• Measure the incoming voltage on the Main Board at
terminal J13 (Note polarity, BLUE wire closest to edge is
negative). See Fig. 1.9 below to locate terminal J13.
•
Voltage should be between 6.75 – 8.25 VDC.
•
If voltage is out of range, check connection between
SMPS and main board.
•
If voltage is correct, proceed to next step.
Fig 1.9
DOMINIQUE
DUTSCHER
SAS