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There are currently no product reviews.
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Very good scan quality, only PC Board scan not enough contrast.
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First of all I must say that I received the manual in just a few minutes after placing the order. The copy is well done and very readable. I will buy others soon... Thanks, Meyer
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Good service manual. I gat all I want. Copy is good, but could be better. All clear and useful. I sincerely recommend.
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The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.The schematic is very helpful and the images are very good.
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Welcome. The scheme is clearly helped me to repair. Worth to download it.
HCD-NEZ3/NEZ5
2. Turn the adjustment screw and check output peaks. If the peaks do not match for L-CH and R-CH, turn the adjustment screw so that outputs match within 1dB of peak.
CD SECTION
Note: 1. 2. 3. 4. CD Block is basically constructed to operate without adjustment. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. Use an oscilloscope with more than 10 M� impedance. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks.
L-CH peak Output level R-CH peak
within 1dB within 1dB
5. Check the focus bias check when optical block is replaced.
FOCUS BIAS CHECK
oscilloscope (DC range)
L-CH peak R-CH peak Screw position
Screw position
CD board TP (RFACO) TP (VC)
+ �
3. Mode: Playback
test tape HEAD PHONE board P-4-A063 PHONES jack oscilloscope (6.3 kHz, �10 dB) (J500)
Procedure : 1. Connect the oscilloscope to TP (RFACO) and TP (VC) on the CD board. 2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01) 3. Press the
CD u
button.
V set
H
4. Confirm that the oscilloscope waveform is as shown in the figure below. (eye pattern) A good eye pattern means that the diamond shape (�) in the center of the waveform can be clearly distinguished. � RF signal reference waveform (eye pattern)
waveform of oscilloscope
VOLT/DIV: 0.2 V (with the 10: 1 probe in use.) TIME/DIV: 500 ns
in phase 45° good
90° 135° 180° wrong
1.1 0.2 Vp-p
4. After the adjustments, apply suitable locking compound to the pats adjusted. Adjustment Location: Record/Playback/Erase Head
When observing the eye pattern, set the oscilloscope for AC range and raise vertical sensitivity.
Checking Location: � CD BOARD (Conductor Side) �
TP (VC)
TP (RFACO)
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