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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.
TROUBLE SHOOTING TABLE (Continued)
CIRCUITS TO BE CHECKED: Tuner. PIF. Automatic Gain Control. Contrast, Brightness and Sound controls ?
Normal Replace the fuse.
PICTURE, NO SOUND
Check F701. Blown out. (5V), (33V) Power Source. Does the noise level increase at max.
Noise increases but no signal is received.
(Approx. 310V at 220V AC)
No snow noise.
The fuse is blown out again.
Check T701 pin (7) voltage Abnormal
Check IC701, D701 and C707. NO YES
Normal 5V. BT must be approx. 32V D709.
Check the tuner supply voltage LB must Check R701, R707 and IC801 ? and CH preset data check.
Does signal appear at pin (40) of
Secondary Main+B Does signal Check IC801 and
Normal T701 (17) voltage appear at pin (38) its related circuit.
Check the tuner AGC NO YES at TP201. D758, IC702, IC753 Check CRT connector D1001 (Power LED Green) Check Q204 and Normal Abnormal
NO its related circuit.
D1001 (Power LED Red) Check pin (27) of IC801, Tuner and
Abnormal (Approx. 115V) Normal of IC801 ?
and R712. K1-K5 bias. turns on. YES
Check pin (38) of on or turns ON/OFF. Check pin (1) of SF201 and IC801. Tuner's related circuit.
Checking the protector circuit.
R615 R618. Check pin (37) of IC801 and C878. IC801. related circuit.
Check ON/OFF ON
YES CIRCUITS TO BE CHECKED:
Bus error mode Does horizontal circuit See Fig.1 NO oscillate ?
Check IC801, IC751, D605 (44) of IC801. and Q601. Â» Sound Detector Circuit.
Â» Sound system pins (28) and Â» Sound Switch and Att. NO Does signal appear at pin (28)
Control. (44) IC801 ? of IC801?
If a bus error happens, LED RED [pin (11) of IC801 LOW] indicator starts blinking and the
Â» Audio Output Circuit. power is turned off. YES The power key (CHANNEL button on the TV) is still effective. (Signal)
Fig.1 EEPROM IC1003
(6) and (8) of IC301 ? Check IC801. peripheral circuit.
NO (M24C08) Does signal appear at pins Check C356 and YES (IX3412CE)
AV Switch IC401
PLL Tuner TU201 2s 0.5s
P301 connector of Check Q301, pins (4) and (6) IC301 circuit. of IC801 and peripheral circuit.