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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.
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It paid to find this Service Manual, couldn't find it anywhere else. Exactly what I wanted. Received within 24 hours.
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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.
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Excellent printing quality. A complete and very useful manual with all details.
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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.
21HT-15C 21HT-16C
LED FLASHING CODE
PURPOSE: The led indicates the power mode, occurred I2C error and On timer
INPUT:
Current power mode - I2C Errors - On timer
Processing: - If in STANDBY mode and On timer inactive then switch LED off. - If in STANDBY and On timer active set LED to blinking, (switch on and off at 1 Hz with a 50% duty cycle). - If in POWER-ON mode, switch LED on. - If an I2C error occurred, let the LED blink at 1 Hz, 50 % duty cycle. For the blinking times see the Table below.
Note: Only when an I2C error occurs for a number of times, or for a number of seconds, the I 2C error is handled by the system (that is ,only then the set will go to standby, the led starts blinking).
IC/Module Name
Slave Address
Bus Error LED Remarks Blinking Time 2 3 6 6 512x8 EEPROM,1024x8 EEPROM Address of internal TV processor PLL Tuner
Ref. No.
M24C04, M24C08 TDA935x/6x/8x VTST6HD64 or CTF551 Table Error LED blinking times
A0,A2 8A C0 C0
IC1002 IC801 TU201
PRINTED WIRING BOARDS
F 7341N0 PWB. Components side.
6
5
4
3
2
1 Y 0 X 1 2 3 4 5 6 7 8 9 10
15
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