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An excellent document to assist in the repair of my old personal tape player. It includes full circuit diagrams and physical layout drawings and full instructions on disassembly and fault finding.
Well worth the meagre price.
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Very good conversation, Pretty fast Service, wood do it again,
Have paid by Paypal, so i got the Service Manual online after 15 Min.
Very helpfully.
Greeting from Germany,
Hans
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Good-quality scans. Detailed description. I hope I can repair the machine.
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High-quality scanning. Detailed description. Recommend for all technician. A+++
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This is a good quality scan of the original Service Manual from Nordmende, Germany. Contains the circuit diagram, PCB layout, adjust/tune instructions as well. It is NOT in English but in GERMAN language! That was quite right for my german friend from the lower east side in Berlin.
KV-28WF1
SECTION 3 SET-UP ADJUSTMENTS
� � �
When complete readjustment is necessary or a new picture tube is installed, carry out the following adjustments. Unless there are specific instructions to the contrary, carry out these adjustments with the rated power supply. Unless there are specific instructions to the contrary, set the controls and switches to these settings : ............ 80% (or remote control normal) Brightness ........... 50% Preparation: � In order to reduce the influence of geomagnetism on the set's picture tube, face it east or west. � Switch on the set's power and degauss with the degausser. Contrast
�
1. 2. 3. 4.
Carry out the following adjustments in this order : Beam landing Convergence Focus White balance
Note: Testing equipment required. 1. Color bar/pattern generator 2. Degausser 3. DC power supply 4. Digital multimeter 5. Oscilloscope
Fig. 3-2
Purity control
A buckle NECK ASSY G1 G2
3-1. BEAM LANDING
1. Input the white signal with the pattern generator. CONTRAST normal BRlGHTNESS 2. Set the pattern generator raster signal to red. 3. Move the deflection yoke forward and adjust with the purity control so that the red is at the centre and the blue and the green take up equally sized areas on each side. (See Fig. 3-1 - 3-3) 4. Move the deflection yoke forward and adjust so that the entire screen becomes red. (See Fig. 3-1) 5. Switch the raster signal to blue, then to green and verify the condition. 6. When the position of the deflection yoke has been decided, fasten the deflection yoke with the screws. 7. If the beam does not land correctly in all the corners, use a magnet to adjust it. (See Fig. 3-4)
Deflection yoke
Green Fig. 3-3 Red Blue
Purity control corrects this area.
a b
Disk magnets or rotatable disk magnets correct these areas (a - d).
c
d
Deflection yoke positioning corrects these areas.
a c
Fig. 3-1
b
d
Fig. 3-4
� 24 �
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