Y Fm Carrier Frequency Adjustment; Y Fm Deviation Adjustment - Sanyo VM-EX220P Adjustment Manual

8. Y
FM Carrier Frequency Adjustment
[Connection]
9. Y FM Deviation Adjustment
[Connection]
—
-__. –..__–__ ..-
I
VR103
/
la
TP131
7
TP?43
la
TP105
1
TP141
o
0
oTP143
f 1
m 1
n
75
0CH2 o-
CH1
OUT
I_l
u
1
Adjustment / Check] [Adjustment / Check]
Meaauring point I Measuring Equipment Condition Meaauring Point
TP141 (CH1)
TP105 (EXT)
TP143 (GND)
~
Input Signal / Alignment Tape
TP131 (CH1) Oscilloscope Record
TP143 (GND) Frequency counter
Color bar (Y signal only)
ADJ. Location ADJ. / Check Value
VR103 4.39 i 0.05 MHz
ADJ. Location
VR104
ADJ. / Check Value
1.00 t 0.05 Vp-p
Preparation:
Preparation:
POWER switch: "CAMERA"
Stand-by switch: "STANDBY
Short pin 6, pin @ and pin @ of J1OO5.
Adjusting / Checking method:
1, Adjust with VR103 to 4.39 f 0.05 MHz.
If adjusted to 4.39 MHz in no signal state, the frequency
Stand-by switch: "STAN DBY''/POWER switch: "CAMERA
and "PLAYER" / Short pin @, pin @ and pin @ of J1 005.
An AV cord should be connected, and the video output -
terminal should be terminated at 75 Q
Adjusting / Checking method:
1. Record.the color bar Y signal.
2. Play back the recorded signal.
3. Check the playback level.
It should be within 1.00 f 0.05 Vp-p.
4. When the level does not meet the specification, turn
VR104 as follows, and repeat 1. to 3.
Counterclockwise (0): When larger than specified value
of sync tip is set to 4.20 MHz when there is a signal.
4.39 f 0.05 MHz
-q-q-
0.23,usec
Clockwise (0): When smaller than specified value
0.05 Vp-p
-
– 5-18 –