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1.
| CQ-DP37VEG/LEE
CQ-DP37VEG/LEE
|
ALIGNMENT INSTRUCTIONS / ABGLEICH ANLEITUNG
MEASURING
INSTRUMENTS AND TOOLS
1. CD adjusting jig YESFZ5019
2. Two-channel oscijloscope
3. Low-frequency oscillator
4. Screwdriver for adjusting semi-fixed variable resistors
5. Test disk CDT-002, (SZZP1014F), Music Disc.
ALIGNMENT PROCEDURES AND POINTS
1. Tracking offest alignment
.............
VR106
2. Tracking balance alignment
...........
VR101
'Test point TE
3. RF offset alignment
.................
VR107_
Test point RF
4. Focus balance alignment
.............
VR103_
Test point RF/FE2
5. Focus gain alignment
................
VR102_
Test point R198 both ends
6. Tracking gain alignment
..............
VR105_
Test point R199 both ends
7. Focus offset alignment
...............
VR104_
'Test point RF
ADJUSTING
METHODS
3X Make use of 10:1 oscilloscope probe.
1) Tracking offset alignment (VR106)
e Test point :
PE
a. nate ids ee hay ah
Oscilloscope
CH1
VREF2
..........
Oscilloscope
CH2
® Oscilloscope setting:
CH1,CH2
.......
50mV/div, 1mS/div, DC, AUTO
@ Operation :
(1) Play the music disc.
(2) The power is supplied to 1C602 by applying 5V power between R701
and R700 via 10K ohms.
R700
PON
(CNI I5PIN)
5V
1OK ohms
2) Tracking balance alignment (VR101)
@ Test point :
VREF2
..........
Oscilloscope
CH1
TEs @aAiviateureiatedes
Oscilloscope
CH2
®@ Oscilloscope setting:
CH1,CH2
.......
0.5mV/div, 0.5mS/div, DC, AUTO
@ Jig setting(YESFZ5019) :SW1
.... 2...
Test side
Clip (Brown)
.......
Open
Clip (Red)
.........
Connect the oscilloscope to TE2 and make adjustment with VR101
until the amplitude of the upper and lower waves of the TE signal
becomes symmetrical while the waveform is being displayed on the
oscilloscope ( for about 10 seconds ) .
@ Operation :
e Waveform :
Play the music disc.
VRef
3) RF ofset alinment (VR107)
e Test point :
PRES eid tal oe 8 ote at
Oscilloscope
CH1
VRFE2
..........
Oscilloscope
CH2
© Oscilloscope setting:
CH1,CH2
.......
50mVidiv, 0.5mS/div, DC, AUTO
@ Operation :
Play the music disc.
Make alignment until the center of the RF signal amplitude becomes VREF
voltage of 2.5V using VR107.
@ Alignment :
@ Wave form :
® Test point :
REO dete
turd pee
3
Oscilloscope
CH1
FEO
racks
fe aes eee
Oscilloscope
CH2
e Oscilloscop setting:
CH1
.............
1V/div, 0.6mS/div, AC, AUTO
CH? oon aiics ee aoe
50mVidiv, 0.5mS/div, AC, AUTO
e CD adjusting jig connection (YESFZ5019)
Clip (Gray)
........
Chassis (GND)
Lead IN (Brawn)
Lead OUT (Red)
1.3KHz, 280mVp-p
(1) Play the music disc track #6.
(2) Adjust the amplitude of the RF signal until its lower edge is flat using
VR103.
(The lower edge of the RF signal amplitude comes ina mid-
point between the FE amplitude and in phase or reverse phase.)
Test point FE1
Test point FE2
e CR Oscillator :
@ Operation :
e Wave from :
ar |
|
5) Focus gain alinment (VR102)
* Change connection of oscilloscope in step3 to the adjusting jig and proceed with the focus gain
alignment.
e@ Test point :
CD adjusting jig-Monitor1
Oscilloscope
CH1
CD adjusting jig-Monitor2
...
Oscilloscope
CH2
@ Oscilloscope setting:
CH1,CH2
........
20mV/div, 0.5mS/div, AC, AUTO
@ Operation :
Turn VR102 to adjust the amplitude of CH1 and that of CH2 until he se
become symmetrical.
e Waveform :
CH1
CH2
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