34
18K
1. Key detection point
Test1
Test2
Test3
Test4
Test5
E
G
I
H
F
D
B
A
C
L
Test9
Test6
K
J
Tset7
M
N
Test11
Test10
Test8
S
T
Test12
Fig. 37 – Key detection point
Test No.
Test Point
Corresponding component
Test value under normal condition
Test 1
Between A and C
Neutral and live wires
160V- 265V
Test 2
Between B and C
Neutral and live wires
160V- 265V
Test 3
Between D and E
DC busbar electrolytic capacitor
DC 180V- 380V
Test 4
Between F and G
Electrolytic capacitor of power
DC 180V- 380V
Test 5
Two ends of diode D15
D15(IPM m15V power supply)
DC 14.5V- 15.6V
Test 6
Two ends of electrolytic capacitor C715
C715 (+12V power supply)
DC 12V- 13V
Test 7
Two ends of electrolytic capacitor C710
C710 (+5V power supply)
DC 5V
Test 8
Two ends of electrolytic capacitor C226
C226 (+3.3V power supply)
DC 3.3V
Test 9
Two ends of chip capacitor C912
C912 (+17V power supply)
DC 15V- 18V
Test 10
Between M to GND
Point M of R75 to ground (signal sending
port of ODU)
Fluctuate between 0- 3.3V
Test 11
Between N to GND
Point N of R123 to ground (signal
receiving port of ODU)
Fluctuate between 0- 3.3V
Test 12
Between S and T
Power supply of communication ring
DC 56V
Содержание 38GRQB09-3
Страница 10: ...10 Outdoor unit Fig 11 Sizes 09 12...
Страница 46: ...46 EXPLODED VIEW AND PARTS LIST Indoor Unit Fig 47 Indoor Unit...
Страница 48: ...48 OUTDOOR UNIT Fig 48 Outdoor Unit...
Страница 50: ...50 Fig 49...
Страница 53: ...53 Shut off power hold both ends of horizontal...
Страница 54: ...54...
Страница 55: ...55...
Страница 56: ...56 ziptie side cutters...
Страница 57: ...57...
Страница 58: ...58...
Страница 59: ...59...
Страница 60: ...60...
Страница 73: ...73 6 7 8...
Страница 74: ...74 9 Remove electric box 10 Remove evaporator...
Страница 75: ...75...
Страница 76: ...76 11 Remove swing blade...
Страница 77: ...77 12 Remove cross flow blade and motor...
Страница 78: ...78 13 Remove drive box...
Страница 90: ...90 APPENDIX Appendix 1 Reference Sheet of Celsius and Fahrenheit...
Страница 95: ...95 UNIT BREAKDOWNS a b c d e...
Страница 96: ...96 f g h...
Страница 97: ...97...
Страница 98: ...98...
Страница 99: ...99...