Alignment Instructions - LG GoldStar TSR-940 Service Manual

4 band stereo cassette recorder
Table of Contents

Advertisement

ALIGNMENT INSTRUCTIONS
EQUIPMENT NEEDED
1.
2:
33
4.
bi:
6.
ie
8.
IMPORTANT
Ve
2:
3.
4.
Bs
6.
TEST AND ADJUSTMENT
POINTS
AM Signai Generator
FM Signal Generator
IF Sweep Generator with marker capabilities
FM Stereo Signal Generator
Oscilloscope
Output Meter (VTVM)
Frequency Counter
Nonmetallic Alignment Tools
Check power-source voltage.
Set the function switch to band being aligned.
Turn volume control to minimum
unless otherwise noted.
Connect low side of signal source and output indicator to chassis ground unless otherwise specified.
Keep the signal input as low as possible to avoid AGC and AFC action.
Standard modulation is 400Hz at 30%
for AM. (40OHz at 22.5kHz deviation for FM).
DNR
ADJ. POINT
Ca
ANT (2) TC6
YN
L5
(pr)
SW ANT
(2)
mwosc
_MW ant{@) il
NS,
omy
£2 OCS]
L202
Case
(ru OSC
TC4
DNR ADI.
7
ons
MW OSC
VN 1c? Ce}
orcil
Ke)
[2
FM ANT
LW
4 58cL FM OSG
Ce
ae
AM ANT
swosc
°°
T2
wa
wa
amie
yy)
FM IF
L101
L301
13
BIAS TRAP
AM IF
Ta
7)
EM IF
BS
L201
BIAS FREQ.

Advertisement

Table of Contents
loading

Table of Contents