Technics RS-TR979

RS.TR979 j
1 2
3 4
A
Note 2:
. S701 : Synchro-start switch (SYNCHRO START).
. S702 : Tape-to-tape recording-speed switch (SPEED; X1, X2).
. S703 : Dolby noise reduction switch (Dorby NR; lID, [£]).
. S704 : Reverse-mode selector switch (REVERSE MODE; = , C'".:>, <'.}O).
.S705 : DECK 1 Fast-forward switch (~~ TPS).
. S706 : DECK 2 Fast-forward switch (~~ TPS).
. S707 : Power switch in "on" position (POWER/ . standby <!>.. ON).
. S708: DECK 2 Stop switch (8).
. S709 : DECK 1 Rewind switch (~~ TPS).
. S710 : DECK 2 Rewind switch (~~ TPS).
. S711 : DECK 1 Stop switch (8).
. S712 : DECK 2 Forward-side playback switch (~).
. S713 : DECK 1 Forward-side playback switch (~).
. S714 : DECK 2 Reverse-side playback switch (~).
. S715 : DECK 1 Record switch (. REC).
. S716 : DECK 2 Record switch (. REC).
. S717 : DECK 1 Reverse-side playback switch (~).
. S718 : DECK 1 Pause switch (II).
.S719 : DECK 2 Pause switch (II).
. S720 : DECK 1 Automatic-record-muting switch (0 AUTO REC MUTE).
. S721 : DECK 2 Automatic-record-muting switch ( 0 AUTO REC MUTE).
. S722 : DECK 1 Open/close switch (. OPEN/CLOSE).
. S723 : DECK 2 Open/close switch (. OPEN/CLOSE).
. S724 : DECK 2 Tape counter mode 2 switch (COUNTER MODE 2).
. S725 : DECK 1 Tape counter mode 1 switch (COUNTER MODE 1).
. S726 : DECK 2 Tape counter reset 2 switch (COUNTER RESET 2).
. S727 : DECK 1 Tape counter reset 1 switch (COUNTER RESET 1).
. S728 : DECK 1 ATC switch (ATC).
. S729 : DECK 2 ATC switch (ATC).
. S730 : Timer switch ( [9 TIMER).
. S971 : DECK 1 Mode switch in "off" position.
. S971A : DECK 2 Mode switch in "off" position.
. S972 : DECK 1 Cassette half detection switch in "off" position.
. S972A : DECK 2 Cassette half detection switch in "off" position.
. S973 : DECK 1 ATS (CrO~ switch in "off" position.
. S973A : DECK 2 ATS (CrO2)switch in "off" position.
. S974 : DECK 1 Reverse rec. inhibit switch in "off" position.
. S974A : DECK 2 Reverse rec. inhibit switch in "off" position.
. S975 : DECK 1 Forward rec. inhibit switch in "off" position.
. S975A : DECK 2 Forward rec. inhibit switch in "off" position.
. S976 : DECK 1 ATS (Metal) switch in "off" position.
. S976A : DECK 2 ATS (Metal) switch in "off" position.
. S977 : DECK 1 Cassette holder open detection switch.
. S977A : DECK 2 Cassette holder open detection switch.
. S978 : DECK 1 Cassette holder close detection switch.
. S978A : DECK 2 Cassette holder close detection switch.
. Resistance are,in ohms (0),1/4 watt unless specified otherwise. 1K=1,000 (0),1 M=1,000k (0)
. Capacity are in micro-farads (1lF) unless specified otherwise.
. All voltage values shown in circuitry are under no signal condition and playback mode with
volume control at minimum position otherwise specified.
( ) Voltage values at record mode.
For measurement us EVM.
. Important safety notice
Components identified by & mark have special characteristics important for safety.
When replacing any of these components, use only manufacturer's specified parts.
.( -<+8:::- ) indicates+B(bias).
.( .-.11«-8»11--. )indicates-B (bias).
. (""""""""""""'1~;') indicates the flow of the playback signal.
. ( ~ ) indicates the flow of the record signal.
* Caution!
IC and LSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during repair.
* Cover the parts boxes made of plastics with aluminum foli.
* Ground the soldering iron.
* Put a conductive mat on the work table.
* Do not touch the legs of IC or LSI with the fingers directly.
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