Technics STCH 7 L Service Manual

Page 2

ST-CH7L

I CONTENTS
Page

LOCATION OF CONTROLS .............................. 2,3

DISASSEMBLY INSTRUCTIONS ......... . . . 4
MEASUREMENTS AND ADJUSTMENTS . ... 5,6
DESCRIPTION OF FL PANEL ........... 7
FUNCTION OF IC TERMINALS, . . . 8
SCHEMATIC DIAGRAM ................................ 9N12

Note:

Page

PRINTED CIRCUIT BOARDS AND WIRING CONNECTION
DIAGRAM ................... .. 13,14
BLOCK DIAGRAM ........... .. 15,16
REPLACEMENT PARTS LIST . 17~21
CABINET PARTS LOCATIONS . . . 21

Refer to the service manual for Model No. SU-CH7, Order No. ADS104082C8 for information on
ACCESSORIES, INSTALLATION OF THE SYSTEM, CONNECTIONS and PACKAGING.

I LOCATION OF CONTROLS

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Tuner: control section

(D Timer set button (TIMER SET)
This button is used when making the timer setting.

Timer select buttons (V SELECT A)

These buttons are used when setting the time. And when
making the timer setting, to select the type of timer operation,
the day, the time, etc.

(2

Remote signal sensor (SENSOR)

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Band select button (BAND)
This button IS used to select either the MW, LW or FM band.

Preset-tuning buttons (V PRESET A)

These buttons are used to select channel numbers for a
broadcasting station which has been stored in the tuners
memory.

© Timer cancel button (CANCEL)

This button is used to cancel the timer setting.

Power STANDBY O/ON" switch

(POWER STANDBYO ION)

This switch switches ON and OFF the secondary circuit power
only. The unit is in the standby" condition when this switch is
set to the STANDBY Q) position. Regardless of the switch
setting, the primary circuit is always live as long as the
power cord is connected to an electrical outlet.

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Timer setting confirmation button (RECALL)
This button is used to confirm the timer setting.

Clock set button (CLOCK SET)
This button is used to set the present time.

Memory button (MEMORY)
This button is used when presetting broadcast station
frequencies into memory.

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Tuning buttons (V TUNING A)
These buttons are used for tuning the desired broadcast
station,