Diode Bridge (Mounted On Transistor Pcb) - Fujitsu Airstage V series Service Manual

SERVICE PARTS INFORMATION 15
Diode Bridge
(Mounted on Transistor PCB)
Check Point 1 : Appearance check
No fissures, breaks, damage, etc. at body and terminal section?
Is the rear of the body coated with silicone grease?
Are there no abnormalities at threaded parts (stripped threads, deformation, damage, etc.) ?
Check Point 2 : Electric check
In the 3-phase diode bridge single part state, set the tester to the "Resistance" mode,
and check for open/short between the following terminals.
Tester + side Tester - side
(red) (black)
Pin 1
Pin 2 Pin 21
Pin 3
Pin 1
Pin 23 Pin 2
Pin 3
When it is difficult to measure, it is no problem also with the terminal on the same pattern.
For example. Pin 1 ---> TB-L1
Pin 2 ---> TB-L2
Pin 3 ---> TB-L3
Pin 21 ---> Relay(X52A) terminal near the pin 21
Pin 23 ---> TB-N1
Judge the result of as follows:
All 6 points shorted
1 or more points open
Set the tester to the "Resistance" mode, and check for open/short between the following terminals.
Tester + side Tester - side
(red) (black)
Pin 1
Pin 21 Pin 2
Pin 3
Pin 1
Pin 2 Pin 23
Pin 3
Judge the result of as follows:
All 6 points open
1 or more points shorted : Defective
: Normal
: Defective
: Normal
1~ 2~ 3~
+ 21
Diode bridge
06-107
- 23