Mod 101 - Filter Section Inside Voltage Tests; Filter Section (Inside) Voltage Readings

T6
470
470
C
See Assembly Drawing 22
5
W
1
Ω
B
HV
1
0W
3
60Ω
See Assembly Drawing 15
T4
100K
100K 100K
82K
DE
See Assembly Drawing 22
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 (INSIDE)
V3
1
2
3
4
5
6
7
8
1*
V3
cathode
See Assembly Drawing 22
4
A