HP 5334B - Oven Circuit Voltages

10v SUPPY -
THERAL
FUSE
20-30V INPUT
U2
F 1
J
v
t
CURRENT
TEMPERATURE CONTROL AND
SENSE HEATERS.
RT1. U3
b
m UlA.06. 7.8
T
WARMUP
-
CURRENT
LIMIT
U10. CR6
Table 8-11. Oven Circuit Voltages*
* Voltage reading taken with oven supply voltage of 20V dc and insulating foam and cover removed.
Voltages are approximate and will vary slightly from unit to unit.
VOLTAGE POINT
468
Q6c
Q6E
478
Q7C
Q7E
Q8B
Q8c
Q8E
U1 Pin 1
U1 Pin 2
U1 Pin 3
U1 Pin 5
U1 Pin 6
U1 Pin 7
U2
Pin 2
U3 Pin 6
OVEN AT
OPERATING TEMP.
1.6
11.4
1
.O
12.5
20.0
11.4
1 .O
11.4
0.07
8.9
0.07
0.2
4.0
4.0
3.3
10.0
3.5
OVEN COLD (JUST
AFTER TURN-ON)
2.0
11.4
1.3
12.7
20.0
11.4
1.3
11.4
0.23
1.8
0.23
0.23
4.1
4.1
4.8
10.0
19.0
RT1
GROUNDED
0.25
11.4
0
11.9
20.0
11.4
0
11.4
0
8.9
0
0.2
3.8
3.8
1.5
10.0
0.5