Harman Kardon Citation II - Resistance Readings

31
VOLTAGE AND RESISTANCE CHARTS
VOLTAGE READINGS
12BY7A
12BY7A
12BY7A
12BY7A
12BY7A
12BY7A
KT88/6550
KT88/6550
KT88/6550
KT88/6550
PIN
V1
V2
V3
V4
V5
V6
V7
V8
V9
V10
1
5V
150V
150V
5V
150V
150V
0.6V AC
NC
NC
NC
2
0V
110V
110V
0V
110V
110V
3.1V
AC
3.1V
AC
3.1V
AC
3.1V
AC
3
5V
150V
150V
5V
150V
150V
450V
450V
450V
450V
4
1.5V
AC
3.1V
AC
3.1V
AC
1.5V
AC
3.1V
AC
3.1V
AC
450V
450V
450V
450V
5
1.5V
AC
3.1V
AC
3.1V
AC
1.5V
AC
3.1V
AC
3.1V
AC
-50V*
-50V*
-50V*
-50V*
6
3.1V
AC
3.1V
AC
3.1V
AC
3.1V
AC
3.1V
AC
3.1V
AC
450V
450V
450V
450V
7
160V
285V**
285V**
160V
285V**
285V
**
3.1V
AC
3.1V
AC
3.1V
AC
3.1V
AC
8
210V
340V
340V
210V
340V
340V
1.5V
1.5V
1.5V
1.5V
9
5V
150V
150V
5V
150V
150V
―
―
―
―
NOTE:
Readings may vary ±20%.
All measurements to gnd. with VTVM―117 Line―No signal input. All voltages DC unless otherwise noted.
* Differences in these voltages are normal but cathode currents should be equal.
** These voltages will be equal with balanced tubes, but may differ without affecting performance
.
RESISTANCE READINGS
12BY7A
12BY7A
12BY7A
12BY7A
12BY7A
12BY7A
KT88/6550
KT88/6550
KT88/6550
KT88/6550
PIN
V1
V2
V3
V4
V5
V6
V7
V8
V9
V10
1
220 ohms
5K
5K
220 ohms
5K
5K
―
―
―
―
2
1M
1M
1M
1M
1M
1M
0.1 ohm
0.1 ohm
0.1 ohm
0.1 ohm
3
220 ohms
5K
5K
220 ohms
5K
5K
62 ohms
62 ohms
62 ohms
*
62 ohms
4
1 ohm
0.1 ohm
0.1 ohm
1 ohm
0.1 ohm
0.1 ohm
280 ohms
280 ohms
280 ohms
280 ohms
5
1 ohm
0.1 ohm
0.1 ohm
1 ohm
0.1 ohm
0.1 ohm
120K
120K
120K
120K
6
0.1 ohm
0.1 ohm
0.1 ohm
0.1 ohm
0.1 ohm
0.1 ohm
20 ohms
20 ohms
*
20 ohms
*
20 ohms
7
16K*
15K**
15K**
16K*
15K**
15K**
0.1 ohm
0.1 ohm
0.1 ohm
0.1 ohm
8
39K*
22K*
22K*
39K*
22K*
22K*
15 ohms
15 ohms
15 ohms
15 ohms
9
220 ohms
5K
5K
220 ohms
5K
5K
―
―
―
―
NOTE:
Readings may vary ±20%.
* These readings are measured from B+ (the Junction of L1 & C15). All other readings to Ground.
** These readings are measured from B+ and depend on the position of the AC balance controls. They may vary ±25%.