|
|
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
OK?..manual is complet and helpfull... for repairing such a old and rare boombox like JVC PCM it is necessary...
;
Super Anleitung. Ordentliche Auflösung. Das ganze noch in Deutsch wäre zu schön. Alle Datenblätter sind sauber Kopiert und alle Leitungswege sind sauber ausgeführt
;
Thanks God for the internet and thanks for the service like this - proffessional solution on time.
;
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.
;
The downloaded quality was as good as the orignial
PZ-43HV2, PZ-43HV2E PZ-43HV2U
Measuring Waveform of Pulse Module Timing Adjustment
Timing adjustment of the pulse module control signal adjusts with the sustain pulse of eighth pulse (X DRIVE) and the ninth pulse (Y DRIVE) from the back of 6SF.
Measuring point of waveform
Y DRIVE SUSOUT waveform
1SF 2SF 3SF 4SF 5SF 6SF 7SF
X DRIVE SUSOUT waveform
1SF 2SF 3SF 4SF 5SF 6SF 7SF
1ms/div Magnify 6SF block
1ms/div Magnify 6SF block
5µs/div
CH1 : Y SUSOUT Under (K2203), 50V/div CH2 : Y SUSOUT Upper (K2212), 50V/div CH4 : YPR-U1 (K2038)- Trigger, 5V/div Trigger : 2msec delay Use this sustain pulse and adjust.
5µs/div
CH1 : X SUSOUT Under (K3106), 50V/div CH2 : X SUSOUT Upper (K3105), 50V/div CH4 : YPR-U1 (K2038)- Trigger, 5V/div Trigger : 2msec delay Use this sustain pulse and adjust.
� Perform adjustment of waveform with a black mask screen. � It is easy to adjust when turned field AB offset to OFF (RS-232C command: OCN) in adjustment. Note: � Sampling rate of oscilloscope sets it more than 500MS/s in order to perform ns order adjustment. � Collecting calibration of probe before adjustment by all means. � Connect GND of probe measuring waveform to SUSGND terminal by all means. � Precise waveform is not displayed, and an adjustment gap may occur that does not collect GND properly.
When took waveform be each drive Assy unit, measure it at the fourth sustain pulse from the back except for a large width sustain pulse. Therefore, when measured both waveform of the X and Y drives together, it becomes the sustain pulse of 8 and 9 pulses from the back.
Waveform coarse adjustment
Measure the SUSOUT waveform When there is a gap with waveform of CH1 / CH2 of the part which enclosed in the following circle, adjust required VR to overlap the waveform.
1ms/div Magnify the adjustment waveform
Adjust with SUS-B CH1 : Y SUSOUT Under (K2203), 50V/div CH2 : Y SUSOUT Upper (K2212), 50V/div CH4 : YPR-U1 (K2038)- Trigger, 5V/div Trigger : 2msec delay Adjust with SUS-G
500ns/div
Adjust with SUS-U
26
|
|
|
> |
|
