GB 48
8.
CDR600
Faultfinding Guide
Oscillograms
PM3394B
ch2
ch3
ch1
CH1 2
CH2
CH3 2 V~ ALT MTB5.00us- 0.90dv ch1-
1
2
3
T
ch1 : Drain voltage at testpoint T632
ch2 : Drain current
ch3 : Gate voltage at testpoint T669
PM3394B
ch3
ch1
CH1 1
CH3 50mV~ ALT MTB5.00us- 0.90dv ch1-
1
3
T
ch1 : Drain voltage(T632)
ch2 : Oscillator voltage at pin 4 of IC7612
PM3394B
ch3
ch1
CH1 1
CH3 20mV~ ALT MTB5.00us- 0.90dv ch1-
1
3
T
ch1 : Drain voltage(T632)
ch3 : Sense voltage(T612)