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I have this hi-fi system for a long time and I need to repair some things. Founding this manual will be very helpfull :)
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It is pretty good. The schematics were covered all components, the manual also provide the parts list . It's useful for the trouble shooting.
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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.
XR-CA350X SECTION 3 MECHANICAL ADJUSTMENTS
1. Clean the following parts with a denatured-alcohol-moistened swab: playback head pinch roller rubber belt capstan idler 2. Demagnetize the playback head with a head demagnetizer. 3. Do not use a magnetized screwdriver for the adjustments. 4. The adjustments should be performed with the power supply voltage (14.4 V) unless otherwise noted. Note: With this set, it is not necessary to apply suitable locking compound to the parts after the azimuth adjustment. � TORQUE MEASUREMENT
Mode Forward Torque Meter CQ-102C Meter Reading 2.46 � 5.39 mN�m (25 � 55 g�cm) (0.35 � 0.76 oz�inch) Forward Back Tension CQ-102C 0.15 � 0.39 mN�m (1.5 � 4 g�cm) (0.02 � 0.06 oz�inch) 2.46 � 5.39 mN�m (25 � 55 g�cm) (0.35 � 0.76 oz�inch) 0.15� 0.39 mN�m (1.5 � 4 g�cm) (0.02 � 0.06 oz�inch) 4.91 � 14.70 mN�m (50 � 150 g�cm) (0.69 � 2.08 oz�inch)
SECTION 4 ELECTRICAL ADJUSTMENTS
TAPE DECK SECTION
0 dB= 0.775 V
1. The adjustments should be performed in the order given in this service manual. 2. The adjustments should be performed for both L-CH and R-CH. TEST TAPE
Type P-4-A063 WS-48A Signal 6.3 kHz, �10 dB 3 kHz, 0 dB Used for head azimuth adjustment tape speed adjustment
PB HEAD AZIMUTH ADJUSTMENT Procedure: 1. Put the set into the FWD PB mode.
test tape P-4-A063 (6.3 kHz, �10 dB) 4� set
+ �
level meter
Reverse Reverse Back Tension FF, REW
CQ-102RC
speaker out terminal
CQ-102RC
2. Turn the screw and check the output peak value. Adjust the screw so that the peak value in channels L and R coincides within 3 dB.
within 3 dB output level within 3 dB
CQ-201B
� TAPE TENSION MEASUREMENT
Mode Forward Reverse Tension Meter CQ-403A CQ-403R Meter Reading more than 5.89 mN�m (more than 60 g) (more than 2.12 oz)
L-CH peak
screw position
R-CH peak L-CH peak R-CH peak
angle
3. Check the phase in the FWD PB mode.
test tape P-4-A063 (6.3 kHz, �10 dB) L-CH set 4� V + +H �� oscilloscope
R-CH
4� speaker out terminal Screen pattern
in phase 45 ° good
90 ° 135 ° 180 ° wrong
4. Repeat the above adjustment for the REV PB mode. 5. Check that output level difference between FWD PB mode and REV PB mode is within 4 dB. Adjustment Location: PB head (See page 13)
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