Focus Gain Adjustment; Tracking Servo Adjustment; Tracking Bias Adjustment; Tracking Gain Adjustment - Sony LDP-1500P Service Manual

4-2-2. Focus Gain Adjustment
Conditions Specifications
• Search for frame 35,000 of a REF. Focus Y-X terminal on the SERVO CHECKER
disc.
• Set the switches on the SERVO
CHECKER as follows.
~ . / ' " \ . /-"'\
.,/"'\
~
C.
0 ±0.4 V de
POWER
; ON
~ v v
MODE SELECTOR ; LDP-505
FOCUS 2kHz
; ON
TRKG 4kHz ; OFF
TR KG
0/C
; OFF
. 4-3. TRACKING SERVO ADJUSTMENT
Remove the blind lid on the rear panel, and connect the SERVO
CHECKER to CN10/PR-80 board.
4-3-1. Tracking Bias Adjustment
Conditions
• Search for frame 35,000 of a REF.
disc.
• Set the switches on the SERVO
CHECKER as follows.
POWER ; ON
MODE SELECTOR ; LDP-505
FOCUS 2kHz ; OFF
TR KG 4kHz ; OFF
TRKG
0/C ;
ON
4-3-2. Tracking Gain Adjustment
Conditions
• Search for frame 35,000 of a REF
disc.
• Set the switches on the SERVO
CHECKER as follows.
POWER ; ON
MODE SELECTOR ; LDP-505
FOCUS 2kHz
; OFF
TRKG 4kHz ; ON
TRKG
0/C
; OFF
Specifications
TRKG ERROR terminal on the SERVO CHECKER
A=B
Specifications
B
_ _ I .
TRKG Y-X terminal on the SERVO CHECKER
"'~,...,,
....
"
-
,,.....,
·c.r'-'c:/'"-
0 ±0.2 V de
4-3
Adjustment
RV5/PR-80
Adjustment
RV6/PR-80
Adjustment
RV7/PR-80