Furuno FR-1505 MARK-3 Series Service Manual page 99

From 2) on page 5-10
Measure TX-HV in
ST-By mode.
Rating
OK
Check magnetron
heater voltage in
ST-By mode.
Rating
OK
Measure magnetron
current in TX mode.
Rating
OK
Defective Magnetron or MIC
In ST-By mode;
FR-1505M3: 310 to 350 Vdc
FR-1510M3: 310 to 350 Vdc
FR-1525M3: 520 to 580 Vdc
NG
Faulty PCb HV-9017
FR-1505M3: 7.4 V to 7.6 Vdc (SI)
FR-1510M3: 7.4 V to 7.6 Vdc (S1)
FR-1525M3: 8.2 V to 8.4 Vdc (S1)
6.5 V to 7.5 Vdc (L)
NG
Faulty pcb 03P9243
FR-1505M3: 3.0 V to 3.6 Vdc (L)
FR-1510M3: 4.6 V to 5.3 Vdc (L)
FR-1525M3: 7.4 V to 8.1 Vdc (L)
NG
Faulty magnetron.
5-12
FR1510M3-SME-67