Harman Kardon 330c - Page 26

SCHEMATIC NOTES AND VOLTAGES
I
\
"201
~02
0203
0204
0301
0302
0303,0304
G601
0101,102
0103,104
0501,502
0503,504
0505,506
. 101,402
n 0403,404
' 0405,406
~ 0407,408
0409,410
0413,414
0415,416
0417,418
'-119.420
·~ .·!1,422
NOT~S: 1. All resistors are 1 /4 watt, ±5%, unless noted otherwise. Values are in·ohms.
K = 1000 M = 1000K
2. All capacitances values are in MF unless noted otherwise. PF = MM F
3. Function selector switch (SW7) is in AM position.
VOLTAGE CHART
AC120V, Volume Control at Minimum, Tone Control at Mechanical Center, No Signal,
Chassis Ground
+81
+82
+83
+84
-81
-82
-83
+28.50V
+14.73V
+15.16V
+12.50V
-28.50V
-14.21V
-14.48V
For Service Manuals Contact \
MAURITRON TECHNICAL SERVICES
8 Cherry Tree Rd, Chinnor
Oxon OX94QY
Tel:-01844-351694 Fax:- 01844-352554
Email:- enquiries@rnauritton.co.uk
FM POSITION
AM POSITION
base
emitter
collector
base
emitter
+0.79V
+0.12V
+6.19V 0251 +1.85V
+1.31V
av
+6.06V
+0.40V 0252 +1.05V
+0.55V
(GATE)
(DRAIN)
(SOURCE)
0253
+1.15V +0.48V
+5.91V
+5.25V
+10.39V
0254 +1.68V
+1.02V
+5.88V
t5.23V
+8.54V
0255 +2.46V
+1.83V
+1.72V
+1.09V
+4.80V
+0.64V
av
+0.009V
+8.02V
+8.66V
+4.82V
IC 201 IC 202
+12.25V
+11.66V
+17.35V
1. +1.36V
1. +2.03V
-0.56V
ov
-36.65V
2. +1.36V
2. +2.03V
3.
av 3. +8.40V
-10.36V
-11.01V
+0.91V
4. +8.56V 4.
av
+0.01V
+0.55V
-10.36V
5. +9.24V
5. +8.12V
6. +2.04V
+0.51V
+1.13V
-14.21V
7. +2.03
+0.59V
+0.03V
+3.89V
t3.88V
+3.28V
+14.73V
IC 301
-0.05V
-0.63V
+27.12V
1.
+10.84V 10.
+1.65V
-0.05V
-0.63V
+27.12V
2.
+3.76V 11.
+2.25V
-26.55V -27.20V
-0.63V
3. +5.05V 12. +2.45V
-27.21V -27.75V
-0.71V
4.
+8.02V
13. +2.46V
+27.21V +27.75V
+1.20V
5. +8.03V
14. +2.97V
-0.71V
-0.13V
-27.77V
+1.21V
+0.62V
+28.40V
6.
+11.66V
+0.62V
+0.02V
+28.40V
7.
av
-27.89V
-28.55V
av
8.
+0.11V
av
-0.70V +1.21V
9.
+12.40V
- 21 -
collector
+10.86V
+10.89V
+10.93V
+6.85V
+6.96V