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- BLOCK DIAGRAM
- DISASSEMBLY FOR REPAIR
- COMPONENTS DESCRIPTION
- MICROCOMPUTER'S TERMINAL DESCRIPTION
- CIRCUIT DESCRIPTION
- ADJUSTMENT
- PC BOARD
- SCHEMATIC DIAGRAM
- EXPLODED VIEW
- PARTS LIST
- SPECIFICATIONS
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Great service. Fast response. High quality scan. Good price.
Thank you very much!!!
Oleg S.
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Well-scanned, complete manual. Contains the information needed for repair and maintenance.
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It's great to be able to obtain a precious technical information for a real old equipment. The one I got helps me a lot in the area of wiring diagram to repair my antique. PDF gave me clear enough information to find out thr details. Thanks for giving me the oppotunity to be able to access to almost vanished informations.
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Another excellent aquisition. Fine detailed manual. Thanks
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Good quality for the scan, complete, but as usual for Tascam, not so comprehensive !
KVT-910DVD/920DVD/930DVD/ 940DVD/960DVD
ADJUSTMENT
X86 Circuit Adjustment Specification (K, R, H type)
Item 1. Adjusting image detection coil L103 Adjustment Method & Value 1. Turn VR101 [RF-AGC] counter-clockwise as much as possible. 2. Impresss sDC2.0V to TP [IF AGC] (IC101 #36). 3. Input fo=45.75MHz Mod=1KHz AM60% Level=100dBµ to TP [IF] (CF1 #1). 4. Observe the waveform of TP [VIDEO] (IC101 #8) using an oscilloscope, and adjust L103 so that the output level is at the maximum.
Maximu
Condition � ANT no signal � If the waveform is clipped, raise the DC voltage somewhat. � AC range
2. Adjusting audio detection coil L101
1. Turn VR101 [RF-AGC] counter-clockwise as much as possible. 2. Input fo=41.25MHz non-modulated Level=94dBµ to TP [IF] (CF1 #1). 3. Connect a voltmeter to TP [SIF] (both ends of R107) and adjust L101 to 0V ± 0.01V. 1. Turn VR101 [RF-AGC] to clock-wide direction as much as possible. 2. Input RF signal 30dBµ 11CH color bar to ANT input terminal. 3. Audio (P/S-6dB) non-modulated. 4. Connect a voltmeter to TP [IC101 #12] and adjustVR102 [SMET] to 3.5V ± 0.05V. 5. Set RF signal 70dBµ and adjust VR101 [RF-AGC] so that the value of the voltmeter connected to TP [IC101 #12] is 4.6V ± 0.05V. 1. Connect frequency counter to PIN1 of CN5 [IC2 #7]. 2. Connect Pin3 [IC2 #8] of CN5 and Pin2 [GND]. 3. Adjust VR1 [15KHz] and set to 15734Hz ± 100Hz.
� ANT no signal
3. Adjusting S-METER VR102 4. Adjusting RF AGC VR101
� SlideVR101 so that AGC will not be effective at 30dBµ. � Be sure to conduct adjustment on the SMETER before adjusting RFAGC.
5. Diversity free-run frequency VR1
� ANT no signal
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