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TROUBLESHOOTING & REPAIR
MAIN INVERTER BOARD “UPFR” SECTION TEST (continued)
FIGURE F.15 UPFR AREA ON MAIN BOARD
NOTE: UPFR Section is located at the upper left section of Main board
TP9 GNDPWR 
F1
RL1
R82
TP20
GS
MF8 
POWER INPUT | K | D | S |
A |
| ||
|
| ||
230 VAC (115) | K | A |
|
| S | ||
DD1 |
| G | |
|
|
| |
|
| D | S |
MF9 |
|
|
|
L10 |
|
|
|
