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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.
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Helpd me mont a new carradio when prewius mont was a mess.
KRF-V5050D/V5550D/V6050D/V7050D/X9050D
CIRCUIT DESCRIPTION
1. Initial and Backup Function
1-1 Initial State
Below are set value if the microcomputer is initialized when reset: (1) AMP function initialization � POWER POWER OFF (STANDBY) � Input Selector TUNER � Preset device None � Visual output VIDEO1 � Speaker A relay ON � Speaker B relay OFF � Volume -66dB � BASS 0dB � TREBLE 0dB � INPUT LEVEL 0dB � SOURCE DIRECT 0dB � MONITOR 0dB � VIDEO2/MONITOR VIDEO2 � MD/TAPE TAPE � RF BAND BAND 1 (2) SURROUND function initialization � LISTEN MODE STEREO � INPUT MODE CD/DVD DIGITAL AUTO VIDEO2 ANALOG VIDEO3 ANALOG DVD/6ch DIGITAL AUTO � SUBWOOFER ON � FRONT speaker size LARGE � CENTER speaker size NORMAL � SURROUND speaker size NORMAL � DISTANCE Fch 3.0m / 10ft Cch 3.0m / 10ft Sch 1.5m / 5ft � LEFT level 0dB � RIGHT level 0dB � CENTER level 0dB � REAR (SL,SR) level 0dB � SUBWOOFER level 0dB � MIDNIGHT OFF � CINEMA EQ OFF (3) TUNER function initialization � BAND FM � PRESET CHANNEL "--" � Frequency receive Each destination minimum value K1/K2 FM : 87.50 MHz AM : 530 kHz E1 FM : 87.50 MHz AM : 531 kHz � AUTO MANUAL AUTO
1-2 Backup Function
When the AC power supply is turned off, the receiver microcomputer enters the backup mode. As a result, it will return to the last state before the AC OFF when the AC power supply is turned ON again
0 : Pull down,1:Pull up
2. Destination List of Tuner
SET TYPE TYPE K1 1700 K2 1610 K3 1610 RBDS K4 1700 RBDS E1 AM E2 LW E3 RDS E4 T LW RDS Q1 Q RDS FM MW LW FM AM FM MW LW FM L FM H AM FM L Q Q2 RDS FM H MW LW Y, M, I, C, V M Y RBDS 531kHz-1602kHz 87.5MHz-108.0MHz 531kHz-1602kHz 153kHz-279kHz 87.5MHz-108.0MHz 531kHz-1602kHz 87.5MHz-108.0MHz 531kHz-1602kHz 153kHz-279kHz 65.0MHz-74.0MHz 87.5MHz-108.0MHz 531kHz-1602kHz 65.0MHz-74.0MHz 87.5MHz-108.0MHz 531kHz-1602kHz 153kHz-279kHz 9kHz 50kHz 9kHz 9kHz 50kHz 9kHz 50kHz 9kHz 9kHz 10kHz 50kHz 9kHz 10kHz 50kHz 9kHz 9kHz +450kHz +10.7MHz +450kHz +450kHz +10.7MHz +450kHz +10.7MHz +450kHz +450kHz +10.7MHz +10.7MHz +450kHz +10.7MHz +10.7MHz +450kHz +450kHz 9kHz 25kHz 9kHz 9kHz 25kHz 9kHz 25kHz 9kHz 9kHz 5kHz 5kHz 9kHz 5kHz 5kHz 9kHz 9kHz 0 0 0 0 1 1 1 0 0 1 0 1 BAND FM AM FM AM FM AM FM AM FM RECEIVING CHANNEL FREQUENCY RANGE SPACE 87.5MHz-108.0MHz 530kHz-1700kHz 87.5MHz-108.0MHz 530kHz-1610kHz 87.5MHz-108.0MHz 530kHz-1610kHz 87.5MHz-108.0MHz 530kHz-1700kHz 87.5MHz-108.0MHz 100kHz 10kHz 100kHz 10kHz 100kHz 10kHz 100kHz 10kHz 50kHz IF +10.7MHz +450kHz +10.7MHz +450kHz +10.7MHz +450kHz +10.7MHz +450kHz +10.7MHz PLL 25kHz 10kHz 25kHz 10kHz 25kHz 0 10kHz 25kHz 10kHz 25kHz 0 0 1 0 0
Tuner Destination Port PORT3(68PIN) PORT2(67PIN) PORT1(66PIN) PORT0(65PIN) (CP205) (W109) 0 0 (W105) 0 0 (W106) 0 1
K, P, R Y, M, I, C, V Y
0 0
1
0
K, P Y, M, I, C, V, E, X, H T
1
0
1
1
0
0
E, T
0
1
0
1
1
0
1
1
0
0
K2/E1 are decided by Tuner Destination Port 1 input. (0=K2 type 1=E1 type) K3/E1 are decided by Tuner Destination Port 0 input. (0=K3 type 1=E1 type) X 1 1 X
4
Y
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