Mod 101 Manual page 64

POWER TUBE BIAS SUPPLY
See Assembly Drawing 22
1.5K
R(BIAS)
-48 VDC
1N4007
0 VAC
1N4007
T8
519 VDC
3 VAC
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:
STANDBY:
BASS:
TREBLE:
VOLUME:
T7
220K 220K 1.5K
-48 VDC
0 VAC
-4.17 VDC
0 VAC
2.4K
2.7K
4.3 VDC
47.3 VAC
ON
(UP POSITION)
"0"
"0"
"0"
5
A
-280 mVDC
52.7 VAC