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OK?..manual is complet and helpfull... for repairing such a old and rare boombox like JVC PCM it is necessary...
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Super Anleitung. Ordentliche Auflösung. Das ganze noch in Deutsch wäre zu schön. Alle Datenblätter sind sauber Kopiert und alle Leitungswege sind sauber ausgeführt
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Thanks God for the internet and thanks for the service like this - proffessional solution on time.
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About the service it's very fast and reliable. About the manual the quality is high enough to read even the tiniest details on the wiring diagrams so you can't ask much more than that, let it alone for a manual of a product from 20 years ago. Thank you, very satisfied.
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The downloaded quality was as good as the orignial
DP-SE7/SE7(G)/SE9
ADJUSTMENT
No. ITEM INPUT SETTINGS OUTPUT SETTINGS PLAYER SETTINGS ALIGNMENT POINTS ALIGN FOR FIG.
While pressing the "REPEAT" key, turn the AC ON. { Refer to test mode (MODE 0 0) } On the power from 0.08 to 0.15 mW, when the diffraction grating is correctly aligned with the RF level of 0.6 Vp-p or more.
1
LASER POWER
�
Apply the sensor section of optical power meter on the pickup lens.
Press the PLAY/PAUSE key, then confirm that the LED is "03".
�
(a)
2
FOCUS ERROR BIAS
Test disc Type 4
Connect an oscilloscope as follows. CH1 : RF (CN3 pin 1) CH2 : TE (CN3 pin 6)
Press the PLAY/PAUSE key, then confirm that the LED is "05".
FE BIAS VR2
Optimum eye pattern
3
TRACKING ERROR BALANCE
Test disc Type 4
Connect an oscilloscope as follows. CH1 : RF (CN3 pin 1) CH2 : TE (CN3 pin 6)
Press the PLAY/PAUSE key, then confirm that the LED is "03".
TE BALANCE VR1
Symmetry between upper and lower patterns
4
TRACKING GAIN
Test disc Type 4 Connect a LPF to CN3 Apply signal of pin 5-6 to which you 1.2 kHz, connect an oscilloscope 50mVrms to or AC voltmeters. CN3 pin 5-6.
Press the PLAY/PAUSE key, then confirm that the LED is "05".
TRACKING GAIN VR3
Two VTVMs should read the same value.
(e)
Note: Type 4 disc : SONY YEDS-18 Test Disc or equivalent.(KTD-0V) LPF: Around 47 k�+ 390 pF or so. Step 1~4 are in Test Mode.
(a) Laser power
0.08 ~ 0.15 mW
(e) Tracking gainn
CN3
1 2 3 RF FE1 FE2 VC TE2 TE1
VC L.P.F. L.P.F. + + VTVM VTVM
_
1.2 kHz 50 mVrms
4 5 6
+
Pickup
Optical power meter
7 S.S
ALIGNMENT POINTS
CN1
T-GAIN
TE-B
FE-B
VR3
VR1
VR2
6
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