Kenwood KVT-910DVD Service Manual Manual pdf 48 page image
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Kenwood KVT-910DVD Service Manual

Also see for KVT-920DVD: Instruction manual

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Contents
  1. Table Of Contents
  2. BLOCK DIAGRAM
  3. DISASSEMBLY FOR REPAIR
  4. COMPONENTS DESCRIPTION
  5. MICROCOMPUTER'S TERMINAL DESCRIPTION
  6. CIRCUIT DESCRIPTION
  7. ADJUSTMENT
  8. PC BOARD
  9. SCHEMATIC DIAGRAM
  10. EXPLODED VIEW
  11. PARTS LIST
  12. SPECIFICATIONS
Kenwood KVT-910DVD Service Manual Manual pdf 48 page image
KVT-910DVD/920DVD/930DVD/940DVD/960DVD50ADJUSTMENTX86 Circuit Adjustment Specification (K, R, H type)Item Adjustment Method & Value Condition1. Adjusting imagedetection coilL1032. Adjusting audiodetection coilL1013. Adjusting S-METERVR1024. Adjusting RF AGCVR1015. Diversity free-runfrequencyVR11. Turn VR101 [RF-AGC] counter-clockwise as much aspossible.2. Impresss sDC2.0V to TP [IF AGC] (IC101 #36).3. Input fo=45.75MHz Mod=1KHz AM60% Level=100dBμ toTP [IF] (CF1 #1).4. Observe the waveform of TP [VIDEO] (IC101 #8) using anoscilloscope, and adjust L103 so that the output level is at themaximum.1. Turn VR101 [RF-AGC] counter-clockwise as much aspossible.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) andadjust L101 to 0V ± 0.01V.1. Turn VR101 [RF-AGC] to clock-wide direction as much aspossible.2. Input RF signal 30dBμ 11CH color bar to ANT inputterminal.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 thatthe value of the voltmeter connected to TP [IC101 #12] is4.6V ± 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• If the waveform isclipped, raise the DCvoltage somewhat.• AC range• ANT no signal• SlideVR101 so thatAGC will not beeffective at 30dBμ.• Be sure to conductadjustment on the S-METER beforeadjusting RFAGC.• ANT no signalMaximu
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This manual is suitable for:
KVT-920DVDKVT-910DVDKVT-930DVDKVT-940DVDKVT-960DVD
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