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=:
Test
i
ч
Моде,
Аа].
ና
Ko
Step
M
Scope
Servo
Point
9]
Adjustment and Check Details
s
No.
FrameNo.;
Range
Loop
No.
! Point
/ |
|
11
PLAY
10mv/div
| TANG
᾿ ТР-11
VR1
FOCUS
OFFSET
|
#100
C/L
|
Player in PLAY mode. TANG, TRKG C/L.
TRKG
While observing RF signal at TP-11, adjust VR1
C/L
|
(focus offset) to obtain maximum RF signal.
στι
TP-1
Next, while observing focus error at TP-1, adjust
I
|
.
:
|
the scope V-position VR to center the focus error
EN
i
|
to a horizontal scale line of the scope. Push RE-
NG
SET UP
i
JECT button, then read the offset level from that
S
horizontal scale line. The reading should be lied
!
within
a range of 0 + 0.1V; if not, adjust VR 1 to
S
|
the near limit of the range.
==
12
|
|
BEAM PASS CHECK
'
This step has to be performed when the slider is
|
[
р
replaced or the problem seems to relate with
optics.
4
PLAY
TANG
Player in PLAY mode at middle of the disc, connect
em
#20,000
O/L
|
TP-8 and TP-1/6 to GND (tracking and tangential ser-
s
TRKG
|
vo open). Release the tracking and tangential mirror
55
i
о
|
stoppers. Tracking and tangential mirrors are classi-
fied into 5 ranks by their sensitivities as shown below
and the mirror ranks are designated on the connector.
i
|
Verify the mirror ranks.
|
|
š
MIRROR RANK
RESISTOR FOR
‹ APPLYING MIRROR
CODE
COLOR
;
BIAS: R (Q)
i
C1
BLK
316
!
C2
RED
300
BEAM PASS CHECK JIG
c3
YEW
273
|
| о
BLU
240
|
E
GRN
218
мг
+12
|
R
anga
Meg
7
N-5
TP-12
Housing
IP]
g
pe
|2 ل
rp.
Track. mirror
;
:
i
Г
rank
Tang. mirror
|]
rank
pa!
|
||
E
|
5]
=
24
12
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