Kenwood 103 CD Service Manual

Page 3

lO3CD/104CD/l050CD/DP-R797/R3090/R4090

ADJUSTMENT

INPUT

No ITEM OUTPUT PLAYER ALIGNMENT ALIGN FIG
' SETTINGS SETTINGS SETTINGS POINTS FOR
Open the tray (Normal mode), then turn the power off.
While pressing the On the power from
TIME DISP. key. turn 0.08 to 015 mW,
Apply the sensor section the AC ON. (Test when the diffraction
1 LASER POWER 7 of optical power meter mode) Press the - grating is correctly (3)
on the pickup lens. PLAY/PAUSE key. aligned with the HF
then confirm that the level of 1.0 Vp-p or
display is "03". more.
1. Press the STOP key.
2. Press the OPEN key.
3. Load a disc, then press the CLOSE key.
4. Press the PLAY key.
5. Press the OPEN key to open the tray.
6. Turn the power off. (Player stops as the tray ls opened whlle the disc clamped.)
7. While pressing the TIME DISP. key, turn the power ON to enter the Test mode.
7 l
Connect an oscilloscope Press the
2 TRACKING EFIFIOR Test disc as follows. PLAY/PAUSE key, TE BALANCE usy'zffiglgfige: (C)
BALANCE Type 4 CH1 : RF (CN2 pin 1) then confirm that the VH2 pp tems P
CH2 : TE1 (CN2 pin 6] display is "03".
Connect an oscilloscope Press the (b)
FOCUS ERROR Test disc as follows. PLAY/PAUSE key. FE BALANCE .
3 BALANCE Type 4 CH1 : RF (CN2 pin 1) then confirm that the vm Optmum eye pafle' (3')
CH2 : TE1 (CN2 pin 6) display is "05".
Test disc 7 7 7
Type 4 Connect a LPF to CN2 Press the TRACKING
4 TRACKING GAIN Apply signal of pin 5-6 to which you PLAY/PAUSE key, GAIN Two VTVMs should (e)
1.2 kHz. connect an oscilloscope then contirm that the VHS read the same value.
50mes to or AC voltmeters. display is 05".
CN2 pin 5-6. l
Note:
Type 4 disc : SONY YEDS-1B Test Disc or equivalent.
LPF: Around 47 kfl+ 390 pF or 50,
Step 1-4 are in Test Mode.
(a) Laser power (e) Tracking gain
CN2

0.08 _, 0.15 mW

EIEI
EIEI

R

Pickup

(Z)
©
(D
@
©
®

Optical power meter

Page 6

,fi__e _-7 I _

soco (K, P) 0-21 : 1050co (Y) 0-23 : DP-R3090 (M) 2-71 : DP-R4090 (E, T, X)
t4co (K, P) 0-22 : DP-R4090 (M) 10300 (Y) 2-72 : DP-R3090 (E, T, X)
300 (K, P) 104CD (Y) DP-R797 (Y)

341797 (K, P)

X58
_ 3925 _ -
1.1739243 3:51:12] :glvé 34:31 '5
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*1 523
| ma LINE
OUTPUT
___ VARIABLE
SYSTEM
' .-»-'~ ~ , , CONTROL
\
/ e Tracking gam
Two VTVMs shou-d read the same vatue
(c) Trackrng error balance AC CN2 l
Symmetry between upper voltmeter:
and lower patterns. 9( AG

(b or d] Focus errar balance :

1.2kHz
Optimum eye pattern

SOmVrms

10 Refer to the schematic diagram for the value of resistors and capacitors.