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There are currently no product reviews.
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Very fast service, best quality of the service manual and the schematics
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This service manual of the old video cassette recorder VT-LC50EM is very good readable even the tiniest numbers (i.e. IC-pins). The circuits are very clear. Many details of the schematic are very good described but in GERMAN language. Many schematic details - but complete at all. Common background information of several details are enclosed and physical knowledge of the TFT liquid crystal display for example. The manual lacks PCB drawings. If you understand german I would recommend this manual for you.
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Hi, this is a very clear manual, nice copy, not quite up to the standard of the very best available but better than many others. I think the price was especially fair for a hard to find manual and I would certainly use this manual seller again. Recommended.
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This schema available for me in good condition. I would highly recommend.
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Thanks for this "hard to find" service manual.
I apreciate the good quality of scanning and the pages scanned in A3 format.
KRF-V7090D/VR-9050/9060/9070
ACCESSORIES / CAUTIONS / ADJUSTMENT
ACCESSORIES
AM loop antenna (1) (T90-0893-05) Remote control unit (1) See the following table. Batteries (R03/AAA) (2)
FM indoor antenna (1) U.S.A. and Canada Other countries (T90-0905-05) (T90-0855-05)
PCB vs MODEL
MODEL VR-9050/-S VR-9060/-S VR-9070/-S KRF-V7090D-S KRF-V7090D/D-S SURROUND K,P X08-3390-10 K,P X08-3390-11 K,P X08-3390-12 X E X08-3390-10 X08-3392-71 AUDIO X09-6960-10 X09-6960-10 X09-6960-10 X09-6960-71 X09-6962-71 SUB X13-7960-10 X13-7960-11 X13-7960-12 X13-7962-71 X13-7962-71 DISPLAY X14-7900-10 X14-7900-11 X14-7900-12 X14-7900-71 X14-7902-71
REMOTE CONTROL vs MODEL
MODEL VR-9050/-S VR-9060/-S VR-9070/-S KRF-V7090D-S KRF-V7090D/D-S K,P K,P K,P X E PARTS # A70-1673-05 A70-1671-05 A70-1675-05 A70-1674-05 A70-1674-05 CONTROLLER # RC-R0731 RC-R0829 RC-R0918 RC-R0731E RC-R0731E
CAUTIONS
Resetting the Microcomputer
The microcomputer may malfunction (unit cannot be operated, or shows an erroneous display) if the power cord is unplugged while the power is ON, or due to some other external factor. If this happens, execute the following procedure to reset the microcomputer and return the unit to its normal operating condition.
Memory back up function
Please note that the following items will be deleted from the unit's memory if the power cord is disconnected from the AC outlet for approximately 1 day. Power mode Input selector settings Speaker ON/OFF Volume level BASS, TREBLE, INPUT level TONE ON/OFF LOUDNESS ON/OFF Dimmer level Listen mode setting Speaker settings Distance setting Input mode setting Sound mode settings Broadcast band Frequency setting Preset stations Tuning mode ACTIVE EQ mode GAME mode setting
Unplug the power cord from the wall outlet, then plug it back in while holding down the (POWER ON/STANDBY) key.
� Please note that resetting the microcomputer will clear the contents of the memory and returns the unit to the state it was in when it left the factory.
ADJUSTMENT
No. ITEM INPUT SETTINGS OUTPUT SETTINGS RECEIVER SETTINGS ALIGNMENT SETTINGS VR1(FL) VR2(FR) VR3(SL) VR4(SR) VR5(CENTER) VR6(SBL) X09(A/4) VR702(SBR) X13(F/6) ALIGNMENT POINTS FIG.
AUDIO SECTION
<1>
IDLE CURRENT *
-
SPEAKER : A CN11, FL ch. CN10, FR ch. CN14, SL ch. CN13, SR ch. CN12, C ch. CN15, SBL ch. X09(A/4) CN706, SBR ch. X13(F/6)
(FRONT 2ch MODE) Volume: Minimum
Adjust every potentiometer 10 minutes later after turned the power on.
* Idling Current Adjustment All power amplifier stage need idling current adjustment after the installation of TRAIT transistor. 1. Connect a voltmeter to CNs with the correct polarity as indicated by the PCB silk print. 2. Adjust the preset, VRs to get 8.8mV (Idling current = 20mA) at the voltmeter reading. 3. Repeat step few times for all channels.
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