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PR E PARATION
2 . 1
Electrical adjustments are required after replacing circuit
com ponents and certai n mechanical parts.
It is important to perform these adjustments only after a l l
repairs and replacements have been completed. Also, d o not
attempt these adjustments unless the proper equipment is
available.
Required test equipment
2 . 1 . 1
1 .
Color television or monitor
2.
Oscil loscope: w ide-band, dual-trace, triggered delayed
sweep
3.
Frequency counter
4.
Audio generator
5.
Audio voltmeter
6.
Digital v. o ltmeter
7.
Signal generator: TV-channel
8.
Signa l generator :
NTSC color bars, sta irstep, video sweeper or
multi-burst, a ud io m u ltiplex
9.
Distortion meter
1 0 .
R ecord ing tape
1 1 .
Al ignment tapes: M H - 1 , M H - 1 L, M H- 1 H, M H- F 1
1 2 .
Patch cord : PTU94001 ( P R E/R EC board to CON
N ECTO R board )
S EC T I O N 2
ELECT R I CAL ADJ U ST M ENTS
TV
White ( 1 00%)
i-
1 00
IRE
v
1
Horizontal
sync
Fig. 2-1-1
Color bars signal waveform
�
Q)
0
c::
-
.'!:
"'
..c::
Qi
>
s:
>-
u
-
( 7 5 %)
White
Q
1 00%
Fig. 2-1-2
Color bars pattern
- M u lti -b u rst -
0 . 3
r
...
Fig. 2-1-3
I n put signa l level for multi-burst
- Vi d eo sweeper -
o . 3 V P·P
L
Fig. 2-1-4
I nput signal level for video sweeper
Bu rst
"'
.... .
c::
c::
Q)
Q)
Q)
Cl
'O
:::l
�
"'
Q)
a:
iii
(!)
:2:
I
B l ack
w I
0. 3 5 Vp - p
:1 1
t
0. 3 Vp-p
0. 3 5 Vp-p
2-1
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