Technics ST-G3

ORDER NO. HAD85032451S6
Service
Manual
Tuner
CYUARTZ Synthesizer ST G 3
FM/AM Stereo Tuner
Tuner
CQUARTZ Synthesizer ST G 3 [
FM/MW/LW Stereo Tuner
Color
(S)...Silver Type
Please use this manual together with the service manual for Model No. ST-G3, (K)...Black Type
Order No. HAD84122364C9 and Order No. HAD85012385C2 or Model No.
ST-G3L Order No. HAD84122365C2. Color Areas
(S) (K) | [EX]......- Switzerland and
Scandinavia.
(S) (K) | [EGB].... F.R. Germany.
(S) (K) | [EH)}...... Holland.
(S) (K) | [XA]......- Asia, Latin
The adjusting procedure and illustration for “FM MONO DISTORTION America, Afirca,
ADJUSTMENT” of Model No. ST-G3 or ST-G3L were wrong. Middle Near East,
The correct adjusting procedure and illustration are shown below. So please and Oceania.
correct the Service Manual. (S) (K) | [XL]....... Australia.
(S) (K) | [PA]....... Far East PX.
(S) (K) | [PE]......- European Military.
(S) (K) | [PC] ...... European Audio
Club.
(S) (K) | [EK]....... United Kingdom.
(S) (K) | [EF]......- France.
(S) (K) | [EB]....... Belgium.
M@ MEASUREMENTS AND ADJUSTMENTS
FM MONO DISTORTION ADJUSTMENT FM SIGNAL GENERATOR CONDITION
. Test equipment connection is shown in figure. Moadicnen ee 100%
. Set the unit to ‘'FM” position. Output level
. Place the radio frequency display and signal generator
setting to 100.10 MHz.
. Adjust T7101 core so that voltage measured in signal
mode is 0 mV (0+ 50 mV) in 300mV range.
5. Adjust T102 so that the distortion factor of L ch is aiccag
minimized,
. Repeat steps 4 and 5 a few times.
. Make sure that the distortion factors of L ch and R ch
are nearly the same with each other and are less than
0.4%.
Note: The adjusting screwdriver used should be made of
resin.
200
Panasonic Tokyo Office
Ti @
echnics Matsushita Electric Trading Co., Ltd. Matsushita Electric Trading Co., Ltd.
P.O. Box 288, Central Osaka Japan 1-2, 1-chome, Shibakoen, Minato-ku, Tokyo 105, Japan