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I was very glad recieving the service manal from You. Manuals were delivered promptly and were correct as advertised. A complete and very usefull service manual with all details. Thank you!
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Very clear copy. No pages missing. Big bonus is that it includes supplement. Price is affordable compared to what others ask for.
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Found the quality of the copy excellent and a very quick service. I would certainly recommend the service.
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Good quality, clear diagrams. Exactly what I needed.
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Good product. All the information is invcluded, but due to the complexity of the amplifier, it still is difficult to get it to operation again.
Model 4342A
Section Figure
TTT
3-6
Mechanical
zero
adiustment
The meter is properly zero-set when the pointer sets exactly over the zero calibration scale mark and the instrument is in its normal operating environment. To check the meter mechanical zero, turn the instrument off and allow 30 seconds to completely deenergizethe z strument. To obtain maximum accuracy and mechanical stability, if the meter is not over zero, zero-set the meter as follows: a. b. Rotate meter pointer adjustment screw @ clockwise is moving toward zero in an upscale direction. Continue rotating screw clockwise and stop exactly at zero. If the pointer overshoots, the adjustment screw clockwise to do steps until meter
when pointer is continue rotating a and b once again.
C.
When the pointer is exactly over zero, rotate adjustment screw slightly counterclockwise to relieve tension on pointer suspension. If pointer moves off zero, repeat steps a, b and c, but rotate less counterclockwise. zero adiustment
Electrical
The meter pointer should set exactly over the zero scale mark when instrument is turned on and nothing is connected to measurement terminals. Turn the instrument on and allow at least 15 minuts warm-up time to let the instrument reach a stable operating condition. If meter pointer is not over zero, zero-set the meter as follows: a. b. Set FREQUENCY RANGE selector 001) and Q RANGE@ to 1000. Adjust pointer rear panel is exactly @to 22k - 70k (10k - 32k for so that the meter Option
METER ZERO ADJ control@ over zero.
Figure
3-6.
Zeroing
Procedure
(sheet
2 of 2).
3-9
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