Mod 101 - Filter Section Voltage Tests; Filter Section (Top) Voltage Measurements

T11T10
80µF 450V
80µF 450V
220K
220K
HV
T12
22µF 500V
22µF 500V
T13
T14
22µF 500V
22µF 500V
5W 5K
C
4.7K
1K
D
E
B
V3
cathode
See Assembly Drawing 12 – Side View
Voltages measured from test point to ground
with no signal, bias pot turned all the way
to cold and the following front panel
settings:
POWER: ON
STANDBY: (UP POSITION)
BASS: “0”
TREBLE: “0”
VOLUME: “0”
521 VDC 2 VAC “HV”
492 VDC 0 VAC “B”
Test Point DC Voltage AC Voltage
478 VDC 0 VAC “C”
482 VDC 0 VAC “D”
468 VDC 0 VAC “E”
34.6 mVDC 0 VAC “V3 cathode”
FILTER SECTION (TOP)
3
A