|
|
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
The purchased manual is an high-quality scan of the original JVC paper-based Service Manual. The Service Manual includes the Owner´s Manual, so you do not have to buy both of them.
 ;
It paid to find this Service Manual, couldn't find it anywhere else. Exactly what I wanted. Received within 24 hours.
;
Complete manual with clear schematic diagrams and printed circuit board layouts of two variants of the headset and the transmitter an old and a new version.
Also shows how the headset and the transmitter is opened and how transmitter and receivers can be adjusted and where to measure.
I had no problems to repair the headset using this service manual.
;
Excellent printing quality. A complete and very useful manual with all details.
;
This is a great site. I placed my order and by the next am it was available for download. Had some problems with some missing copy on some pages. Once I brought the error to the OMC's attention, the issue was resolved. I'll come back again.
S-FCRW230
7. ADJUSTMENT
ATTENTION
¶ Don� t make speaker terminal short circuit during the power supply injection. ¶ Since the PRIMARY part of the AMP ASSY is not insulated, be careful of electric shock. ¶ Be sure to disconnect the power supply cord before touching the AMP ASSY board. ¶ Discharge the C13, C14 capacitors!
7.1 MEASURING INSTRUMENTS
¶ Provide yourself with the following measuring devices: (1) Digital voltmeter (2) Oscilloscope (3) Attenuator (4) Low-frequency oscillator
7 GAIN Adjustment
(1) Decrease the level of the Adjustment Variable resistors (VR) for the channel to adjusted. (2) Increase LEVEL VOLUME maximum. (3) Adjust GAIN (VR41) volume. ¶ Apply the signal to the Line IN of JA201. ¶ As the gain from IN to SPEAKER OUT 53dB(freq. = 50 Hz), input of 10mVrms to Input results in output of 0.72 W (4.5 Vrms/28 W) at SPEAKER OUT. ¶ After power-supply ON, after waiting abut 10 seconds, it adjustment because, wave form rises behind time for slow start operation.
Test Point
A
Digital Voltmeter +
28� 3W
AMP ASSY
SIDE A
Adjustment VR VR41 Gain Adj
15
|
|
|
> |
|
