Werbung
5-26
HEAD AMPLIFIER P453, P454
P453
4822 214 32354
head amplifier (FM stereo)
P454
4822 214 32574
head amplifier
Adjustments on P453, P454
1. Luminance write current adjustment (3022)
- Select "record" mode.
~
Connect an oscilloscope to the "video current testpin"
on the head amplifier, see Fig. 1.
- Apply no signal (programme E).
- Adjust resistor 3022 for a signal amplitude of 105
mVpp.
2. Chrominance write current adjustment (3023)
— Select "record" mode.
-
Connect an oscilloscope to the "video current testpin"
on the head amplifier, see Fig. 1.
- Connect a pattern generator and apply a red signal to
the Euroconnector (programme E).
— Connect pin 4L6 with earth.
- Adjust resistor 3023 for a signal amplitude of 30 mVpp
(- 12 dB relative to the luminance signal).
Luminance
Chrominance
CS 22 469
CHROMINANCE,
P453, P454
MDA.01604
728/848
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RABERELARRERZB
Reggeee
BR
7001
7101
7102
&
at
a
a
BRR,
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