Electrical Adjustments (Recorder Section); Undercut Adjustment; Atf Bias Adjustment; Avsv Adjustment - Canon Canovision8 E50E Service Manual

6. Electrical Adjustments (Recorder Section)
* Notes: 1, Before the following adjustments
pertorm the input adjustment.
Procedures:
(1) Connect an input connector to make the
recorder section adjustment setting.
(Refer to the Fig. If-39,)
(2} Set the pattern generator at white 100%
state. :
(3) Adjust the output level of pattern
generator to 0.49 Vp-p (TP109, R.MAIN
C.B.A.)
* Notes: 2. REC or EE: CAMERA MODE
y PB =: ~=RECORODER MODE
6-1 SS5V adjustment
R.MAIN C.B.A. VR603 (SS SV)
5.1 + 0.05 Vv
6-2 Undercut adjustment
[ Move rec
[M. £0. [Digital voltmeter, Monitor WV. '|
[ ADJ. {GRIP C.B.A, VR2961 (BATT)
TT = 60 + O1H/5.65 +0.1. -0.05 V
Procedures;
(1) Set a power sopurce voltage at
5.65 V.
(2) Set the SERVICE Move [S-1] with a
wireless remote controller,
(3) Turn VR until the spec, obtained,
6-3 ATF bias adjustment
Color bar signal
REC PAUSE
Monitor TV
R.MAIN C.B.A. VR401
ATF = 80 + 03H
(ATF)
Proceudres:
(1) Short-circuit TP402 (16K) and TP403 (47K)
of SS C,B.A. by using a capacitor.
(Use a capacitor approx. 10,:F/10 V.)
(2) Set the SERVICE MODE [S-i] with a wire-
less remote controller.
(3) To set the REC PAUSE MODE, change the
RECORDER mode to the CAMERA mode.
(4) Turn VR until the spec. obtained.
6-4 Switching point adjustment
Monoscope master (DY9-1062-000)
PB
Oscilloscope
TP/TRIG.}R.MAIN C.B.A, CN110-13PIN (HSW),
R.MAIN C.B.A, VR602_ (PG)
SPEC. 7 1H
Equivalent pulse
3H V Syne
7H
Head switching pulse
Fig, 11-62
6-5 AVSV adjustment
[M. €Q. |Oigital voltmeter
TP/TRIG. |R.MAIN C.B.A. -TP102 (AVSV)
| ADJ. _|R.MAIN C.B.A. VRIOI (AV5V)
[seco [5.12 0.05v CS
6-6 VIDEO LEVEL adjustment
——]
20 mV/10 Us
Fig. I1-63