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Thanks for offering this item at such a good price. Proved handy in identifying the part I was looking for my set.
This is the original manufacturers service manual, with detailed info on the circit boards, explosion drawings of all parts in assembly order, and tuning instructions. The only thing missing is the information on the dimensions of the various drive belts. mail me if you need them. gcrossman_at_aol.com
Ordered service manuel for a hard to find plasma tv - your company made it easy to find and purchase - I will use you again
Thanks for your help
This is a high quality manual with clear schematic and components layout diagrams ; with service procedure included.
This service manual for the Kenwood KT-990D was reproduced really well ,is very legible and manual is complete.Combined with the low price paid,in the future,I will be checking Owner-Manuals.com any time I need a manual.
M-640V/645V/647V SECTION 3 MECHANICAL ADJUSTMENTS
1. Clean the following parts with a denatured-alcohol-moistened swab : record/playback/erase head pinch roller rubber belts capstan 2. Demagnetize the record/playback/erase head with a head demagnetizer. 3. Do not use a magnetized screwdriver for the adjustments. 4. The adjustments should be performed with the rated power supply voltage unless otherwise noted. Power supply voltage: 3 Vdc TAPE SPEED switch : 2.4 cm Torque Measurement
Mode Forward Fast Forward Torque Meter CQ-103M CQ-201M Meter Reading 0.49 â 1.27 mN â¢ m (5 â 13 g â¢ cm) (0.07 â 0.180 oz â¢ inch) more than 2.95 mN â¢ m (more than 30 g â¢ cm) (more than 0.42 oz â¢ inch) Rewind CQ-201M more than 2.95 mN â¢ m (more than 30 g â¢ cm) (more than 0.42 oz â¢ inch)
SECTION 4 ELECTRICAL ADJUSTMENTS
Specified voltage: 3 V (DC) Test Tape
Type S-2-A030 WS-24 WS-12 Signal 3 kHz, â 20 dB 3 kHz, â 10 dB Used for Head Azimuth Adjustment Tape Speed Adjustment Tape Speed (cm/s) 2.4 2.4 1.2
Record/Playback/Erase Head Azimuth Adjustment
Setting: [VOL] control : mechanical mid [TAPE SPEED] switch : 2.4 cm/s [VOR] switch : OFF Procedure: 1. Mode: Playback
test tape S-2-A030 (3 kHz, â20 dB) set
level meter 16 â¦ + â
Tape Tension Measurement
Mode Forward Tension Meter CQ-403M Meter Reading more than 20 g (more than 0.28 oz)
[EAR] jack (J101)
2. Turn the head azimuth adjustment screw to obtain the maximum reading on level meter.
Note: Several peaks may appear, but the maximum.
Adjustment Location: First remove the cover (AZ).
Remove the cover (AZ).
head azimuth adjustment screw
Complete owner's manual in digital format. The manual will be available for download as PDF file aft…