Daewoo DTD-29U9WPT, Service Manual

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1. MAIN ADJUSTMENTS
1-1. 2-C NICAM(MSP3410D) SOUND DETECTOR ADJUSTMENT
At first, you must put off Main Power Cord.
1) Test Equipments
(1) VTVM or VOLTAGE METER
(2) DC Power Supply X 2
(3) PIF Sweep Marker Generator
(4) Oscilloscope
2) Connection
3) Preparation
(1) Connect H-output of PIF Sweep Marker Generator to X-axis of Scope, and connect V-output
to Y-axis.
(2) Connect Sweep Signal IF output to TP2.(Set attenuator to 0dB)
(3) After set Power Supply at 12V, connect this output to TP3.
(4) Oscilloscope Scaling
a. The Horizontal(X)-axis and the Vertical(Y)-axis must be located on DC level.
b. The Horizontal time display is located on X-Y axis.
c. Set the Horizontal(X)-axis scale at 1V/DIV, to check frequency and marker.
d. Set the Vertical(Y)-axis scale at 2V/DIV.
(5) Set Marker Frequency of PIF Sweep Marker Generator as follows.(MHz)
4) SIF Adjustment
(1) Connect ’FROM TP’ of PIF Sweep Marker Generator to TP1(I604 #12).
(2) Turn the L106(SIF Coil) so that the P marker point is located on the reference level.
SYSTEM Fp(n+1) Fs Fc Fp-2 Fp Fs(n-1)
P/S/N-BG/,DK,I,M 31 32.5 33.57 36 38 39.5
Alignment Instruction