Technics RSM 04 Service Manual
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Page 1
ORDER NO, ARD-8004037C
Service Manual
Cassette Deck
RS- M04
. . (Silver Face)
ConCIse Metal Tape-Compatible Cassette Deck
with 2-Color FL Meters and Automatic Tape Select
This is the Service Manual for the
m- following areas.
In --------- For all European areas
except United Kingdom
For United Kingdom.
RS-M24 MECHANISM SERIES
Specifications
Track system: 4-track 2-channel stereo recording and playback inputs: MIC; sensitivity 0.25mV, input impedance 10k52
Tape speed: 48 cm/s applicable microphone impedance 4009- 10 k9
Wow and flutter: 0.05% (WRMS), i0.14% (DIN) LlNE; sensitivity 60mV, input impedance 70 k9
Frequency response: Metal tape; 58 : $888 :2 (DIN) Outputs: LINE; output level 700 mV, output impedance
30 -16000 H: + 3 dB 1.5 kg or less load impedance 22 k9 over
CrOz/Fe-Cr tape; 20-18JOOOHZ HEADPHONE; output level 125mV, load
30-16,000HZ (DlNl Impedance 89
30-16,000Hz i3dB Bias frequency: 75kHz
Normal tape; 20-17000 Hz Motor: Electrical DC governor motor
30 15900 HZ (DlN) Heads: 2Ahead system
30- 14900 HZ : 3 dB 1-MX head for record/ playback
Signal-to-noise ratio: Dolby NR in; 67 dB (above 5kHz)
Dolby NR out; 57 dB
(signal level:max. recording level, Fe-Cr/Cr02
1-sendust/ierrite double-gap head for erasure
Power requirement: AC 110/125/220/240 V, 50-60 Hz
type tape) Power consumption: 14 W
Fast forward and Dimensions: 29.7cm(W)><12:2cm(H)><23.2 cm(D)
rewind time: Approx 95 seconds with 0-60 cassette tape Weight: 4.1 kg
Specifications are subject to change without notice.
- Dolby and the double-D symbol are trademarks of Dolby Laboratories.
h' E ' ' 00., Ltd.
Technlcs M°°°° 2.2 '22::12222mm
Page 2
RS-MO4
CONTENTS
ITEM PAGE
LOCATION OF CONTROLS AND COMPONENTS ......................................................... 1
DISASSEMBLY INSTRUCTIONS ............................................................................... 2
DISASSEMBLY NOTES (MECHANISM UNIT) ............................................................. 3
ASSEMBLY INSTRUCTIONS .................................................................................... 3
CIRCUIT BOARDS AND ADJUSTMENT PARTS LOCATION ------------------------------------------ 6
MEASUREMENT AND ADJUSTMENT METHODS ------------------------------------------------------ 7
ELECTRICAL PARTS LOCATION ---------
SCHEMATIC DIAGRAM -----
CIRCUIT BOARDS ...........
WIRING CONNECTION DIAGRAM -------------
EXPLODED VIEWS ................................................................................................. 15
MECHAN'CAL PARTS LOCATION ............................................................................ 16
CABINET PARTS ................................................................................................... 17
LOCATION OF CONTROLS
AND COMPONENTS
Q0 0
CD ® @ GD ® ® @ (D Power swltch (power)
I .1 ® Cassette holder
i - m . © Microphone Indicator (mic)
o J: I "" " '5' © Dolby nolse reductlon Indicator (lilolby NR)
1 _ . I m (E Recording indicator (rec)
_ - _ £1 fifl * Tepe counter and Reset button (tape counter reset)
4%,. ...... I. am, j (7) Tape selector Indicators (norlCrOJMetel/Fe-Cr)
"W""" 73 3g '- _,, FL (fluorescent level) meters
m W71;- ,...I ._ . w (9 Input level controls (Input level) (L ~9- R)
? a "I CT {3" E: m LT. ?*? @ ® Headphones Ieok(phones)
__ ® Eject button (; eject)
I l"I" @ Record button (0 rec)
® ® ® ® ® ® ® RewindIl-Ievlew button ( < 4 rewlrev)
10 ® ® db ® ® ® Fast forward/Cue button ( V D Illcue)
® Play button ( D ploy)
® Stop button (I stop)
® Pause button ( || pause)
® ® @ ® Tune selector (music select)
69 Record-muting button (rec mute)
l I ® Dolby nolee-reductlon switch (Dolby NR)
® Microphone jacks (L mic R)
@ Output level control (output level)
® Llne output jacks (LINE OUT) ( R- L)
(8 Line Input lacks (LINE IN) (R t L)
l I ® Tepe selector
,9 mo) Q LMQ- \ (Fe-CrIMeteII nor/CrOJMetall )
mm I. .I 233mm..." I 69 Voltage selector (VOLTAGE SELECTOR)
- -I
Fig. I