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Test
Adj.
Step
Mode
Scope
Servo
Point
a
Adjustment and Check Details
No.
Range
Loop
Νο,
Point
17
STILL
20mV/div
TANG
| VIDEO
VR201
VIDEO
OUTPUT
LEVEL
321.000
CIL
OUT
Player in STILL mode in composite test pattern
TRKG
reproducing.
Use
Γ
this level 7
|!
(test disc
|
A2 only)
i
| |
| ግ
|
|
gs
L
18
STILL
20mV/div
TANG
Ζ201
VR202
1-H DELAYED
VIDEO
LEVEL
#21000 | A.C. coupled)
C/L
| UASO01
Verify that the video level at pin-16 of UA 5001 is
TRKG
pin-16
equal to the video level at pin-18 of UA5001; if
сл.
pin-18
not, adjust VR202 slowly to satisfy the above.
18
| SETUP | 0.2V/div
TANG | TP-11
VR204 | DOS LEVEL ADJUSTMENT
(VWS-025, VWS-022)
C/L
| UA5001
Apply a signal of 5.5 MHz/200 mvp-p to TP-11, and
TRKG | ріп 14
observe DOS OUT at UA5001 pin-14s.
сл.
Rotate VR204 fully clockwise, then slowly back to
counter-clockwise until the DOS OUT turns H to L.
19
ΡΙΑΥ
TANG
N9-7
VR203 | v SYNC NEGATIVE
EDGE ADJUSTMENT
$20,000 |
з
inn
Play in the vicinity of 420,000, and observe COMP
jo
pum
SYNC (UAS001 ping) and V sync (N9-7].
it
Check that the V SYNC negative edge is aligned
with the center position between the 1st and 2nd
equalization pulses after the start of the vertical
syncronizing negative edge (see diagram below).
If not, adjust with VR203.
1.022
UA5001
E
*
t
ойе
pin ê
J LA በቢ: aru
У SYNC
ው
-
N9-7
ኣ
"ይ."
ገይ
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