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ORDERNO. ARP-218-O
STEREO CASSETTE TAPE DECK
GT-X5
Type HE HB D
Voltag, 22OV and 24Ov (Switchable) 22Ov and 24OV {Switchable}
MODEL CT-XSCOMESIN THREE VERSIONS DISTINGUTSHED FOLLOWS: AS
Remark
Europe model United Kingdom model G e n e r a le x p o r t m o d e l
12OV,22OV and 24OV(Swatchable)
r This servicemanual is applicableto the HE and HB types. For servicing the D type, please of refer to the additional manual{ARP.236-0}. service o Ce manueld'instruction serefdreau mode de r6glage, frangais. en o Estemanualde serviciotrata del mdtodo de aiusteescritoen espafrol.
CONTENTS
r . s P E c r F r c A T t.o N.S. . . . . .. .
2. 3. 4. 5. 6. 7. 8. F R O N TP A N E L F A C I L I T I E S . . . D|SASSE|\,BLY. . . . . . . . . . P A R T S O C A T I O N. . . . . . L B L O C KD I A G R A M CIRCUIT ESCRIPTIONS. D . EXPLODED IEWS . . . . . . V PACKING
2
9 . P . C .B O A R D S O N N E C T I O N I A G R A M C D 10. SCHEMATIC IAGRAM D 11 . E L E C T R I C A L A R T SL I S T P REGLAGE 1 2 . A D J U S T M E N T. . . . . AJUSTE.
5 I 17
30 33 40
PIGINEEFI ELECTFICINIC CCIFIPG,FIATION a r, Mesu.o 1 chome. Mesu.o-ku. rokyo1s3, Japa. PIC,NEEFI ELECTFIONICA lNC. 1925 E. Oominguez Sr., Lons Beach. Catironnia gOE.1O Ll.S.A. IUBAI PIC'NEEFI ELECYFICINIC Keetbe.glaan T, 2740 Beve.en. Bets,um [EUFICIPEI N.v. PfONEEFf ELECTFIG|NIC3 AUAYFALIA PTY. LTEI. 17a 1a4 Bounda.y Fload, E.6es de. V cto.,a 31s5, Ausr.aha YH O \OV. 1 9 8 2 P r i n t e dl d D d n
1. SPECIFICATIONS
Systems Compactcassette,2-channel stereo Heads........"Hard Permalloy" recording/playback x 1 head "Ferrite" erasingheadx 1 Motor........... m D Cs e r v o o t o rx 1 W o w a n dF l u t t e r . . . . . . . . . . . . . . . o m o r h a n0 . 0 5 %( W R M S ) . t N N o m o r et h a n+ 0 . 1 7 %( D l N ) FastwindingTime ... Approximately 10seconds(C-60 1 tape) Frequency Response -20 dB recording: tape Normal ........4Oto 15,000 + 3 dB Hz (30to 16,000 Hz) Chrometape .......40to15,000H2+3dB (30to 16,000 Hz) Metaltape 40 to 15.000 + 3 dB Hz (30to 16,500 Hz) Signal-to-Noise Ratio t D o l b y RO F F . . . . . . . . . . . . . N M o r e h a n5 7 d B NoiseReductionEffect D o l b y RO N . . . . . . . . . . . . . . . . . . . .o r e h a n1 0d B ( a t5 k H z ) N M . t (0 Harmonic No morethan 1.0olo dB) Distortion Input (Sensitivity/Maximum allowableinput/lmpedance) LINE(INPUT) 63 mV/25V/50 ka level/Loadimpedance) Output (Reference ( L I N EO U T P U T ) . . . . . . . . . . . . . . . . .. 4 5 0m V / 5 0 a k 4. Wow I Flutter: o JIS [3 kHz, with acoustic compensation (weighted) rms valuel; DIN t3,150 Hz. with acoustic compensation (weighted) PEAK value DIN 45507 Frequency Response: o Measured at - 20 dB level,
E
DOLBY NR OFF, level deviation is +6 dB without indication. S i g n a l t o N o i s e R a t i o : o M e a s u r e da t t h e t h i r d h a r m o n i c distortion 3o/olevel, weighted (DlN 455.|3/BLATTT). 7 . Sensitivity: Input level (mV) required for reference recording level with input (REC) level controls set to maximum. 8 . M a x i m u m A l l o w a b l e I n p u t : W h i l e d e c r e a s i n gs e t t i n g s o f i n p u t ( R E C ) l e v e l c o n t r o l s a n d i n c r e a s i n gl e v e l a t input lacks, this is the maximum input level (mVl at the point where recording amplif ier output waveform b e c o m e sc l i p p e d . R e f e r e n c eO u t p u t L e v e l : - 7 d B v l e v e l a t l i n e o u t d u r i n g playback.
1 0 T h i s m o d e l d o e s n o t e m p l o y a r e c o r d i n g / p l a y b a c kc o n nector (DlN-type).
o PowERSWTTCH
When this switch is depressed, power is turned on and the the OPERATION MODE indicator(POWER-l lights. Depress switch againto release when turning off the the it power to the deck. r The muting circuit is actuatedafter the POWERsivitch has been set to ON and there will be no operationfor about 4 seconds.This is not failureor malfunction. . When the POWERswitch is set to the OFF position while the tape deck is operating, deck'soperation the is released and the stop mode is established.
Subfunctions
r . o o o o r . o o o Dolby NR system(ON/OFF)B type 3 positiontape selector(NORM/CrOr/METALI Air damp eject function Full automaticstoDfunction RECmutingfunction Music searchfunction Timer stand-byfunction One-touchrecording function (POWER, mode indicator Operating REC,PAUSE) A.L.C (AutomaticLevelControl)recordingfunction lC-based logic control full
) EJECTBUTTON
Depress this button to open the cassetteholder.To close the cassetteholder,push the top back until it locks. Do not pressthis button when the taoe is in motion.
Miscellaneous
PowerRequirements .............AC 220V / 24 V(switchable) 50/60 Hz P o w e r o n s u m o t i o n. .. . . . . . . C .. . . . . . . . .3 0w a t t s Dimensions . 3 2 0 ( W )x 9 9 . 5 ( H l x 2 0 0 ( D m m ) ( ( 1 2 - 5 l 8 W ) x 3 - 1 5 / 1 6 H )x 7 - 7 l 8( D l i n Weight (withoutpackage) . 3.6 kg (7 lb 15oz)
O) TAPECOUNTER
This countershows the positionof the tape usinga threedigit meter.
Supplied Parts
ig O p e r a t i nn s t r u c t i o n s C o n n e c t i o n r dw i t h p i np l u g co . . . . . . . . . . . . . . . . . . . . . . 1. . . . . . . .. . . . . . . . . . .. . 2
RESET BUTTON O) COUNTER
Depress button to resetthe tapecounterdisplay 000. this to
o
oPERATTNG MODETNDTCATORS
REC: This lightswhen the RECswitch (o) is pressed. POWER: This lightswhen the POWER switch is pressed. PAUSE: This lightswhen the PAUSEswitch ( I I ) is Dressed,
NOTES: Specifications and the design subject to possible modifications without notice due to improvements. NOTES: 1. Reference Tapes: or Normal6 LH: DIN 44513/BLATT6 equiv. (CrO2) equiv. or CrOrDIN 455'13/BLATTT RecordingLevel: -7 dBv level at line out 2. Reference (160nwb/m magnetic reference level : Philips cassette levell Signal:333 Hz 3. Reference
SWTTCHES G) TAPESELECTOR
This selector allowsthe biasand equalizer characteristics to be selectedduring recordingand equalizer characteristics during playbackin line with the type of tape you are using. NORMAL: For normaltapes CrOr: For chrometapes METAL: For metal tapes
2.FRONT PANEL FACILITIES
(0 ProNc@
STARTSWTTCH o TTMER
This switch is used when an optional audio timer is employed for unattened recording or wake-up_ playback operations. Keepthis switch at the OFF positionwhen the timer is not being used. REC: Set to this position to set the tape deck automaticallyto the recording mode at the time preseton the audio timer and to start the recording of programs unattended, for in_ stance. OFF: For when the timer is not being used. PLAY: Set to this position to set the taoe deck automatically the playbackmodeat the time to preset on the audio timer and to start the playback.The tape playbackfunction can oe used to wake-up in the morning insteadof an alarmclock.
o
RECMUTESWTTCH
Depressing this switch during recordingmakesit possible to createan unrecorded blankon the cassette tape only for the time during which the switch is kept depressed. This switch is used for providingblanksof the requiredlength betweenprograms and editingtapesso that they areeasier to listento and for creatingthe unrecorded blankswhich are required operating MUSICSEARCH for the facility. . No signalis recorded when the switch is touchedduring recording.Do not touch the switch unlessnecessarv.
(D *DOLBY NR SWTTCH
Depressthis switch to ON for recordingwith the built-in Dolby Noise Reductionsystemand for playbackof tapes which have been recordedusing the Dolby Noise Reduction system. For other tapes, do not pressthis switch. *The word "Dolby" and 00 are trademarksof Dolby Laboratories Licensing Corporation. NoiseReductionSystemmanufactured underlicense from Dolby Laboratories Licensing Corporation.
S o ) M U S |CS E A R C H WT T C H
Use this switch when playing a tape with music recorded on it to quickly locate the beginning of songs separated by a non-recorded section of over 4 seconds duration. ln the fast-forward mode or rewind mode. when this switch is set to ON, tape travel will stop in the non-recorded area between songs and the unit is automatically set to the playback mode. This is a handy function for locating the program.
SWTTCHES @ oPERATING
REW (<
o
RECSWTTCH
FF (>>l:
Depress this switch to start tape recording. This switch will not work when a cassette is not loaded or when the erasure prevention tabs of a loaded cassette have been broken off. When this switch is depressed to the ON position, the OPERATION MODE indicator (REC o) will be iiluminated.
STOP (tl: PLAY (>l:
@ PAUSESWTTCH
Depress this switch to stop the tape traveltemporarily during recordingor playback. Depressthis switch again to allow the tape to continue to travel. When this switch is to depressed the ON position,the OPERATION MODEindicator(PAUSE I I ) will be illuminatd. . The tape does not stop during fast forward or rewind oorations even when the PAUSEswitch is deoressed.
3. DISASSEMBLY
. Tape transport unit R e m o v e t h e f o u r s c r e w s( E ) .
. Front
panel assembly R e m o v e t h e s i x s c r e w s( D ) .
. Bottom plate Remove the t w o s c r e w s( B ) . . Door assembly 1. Depress the EJECT button and o p e n t h e c a s s e t t eh o l d e l . 2. Removethe hooks (C). 3. Pull up the door assemblv
4. PARTS LOCATION
NO?ES: c Parts utithout part number cannot be supplied. o The I marh found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. o For your Parts Stoch Control, the fast mouing items are indicated with the marhs ** and *. ** GENERALLY MOT'"ESFASTER THAN *. This classification shall be adjusted by each distributor because it depends on model number, temperature, humidity, etc.
Front PanelView
F r o n t P a n e la s s e m b l y RX8-692 Knob B (TAPESELECTOR) RAC-286
Eject knob RAC-281
KnobA (PAUSE, ECMUTE) R RAC-276
Bonnet RNA-592
,| I
Knob B (REC) RAC-277
l '@l
**
Door assembly
I
I
RX8.693
K n o b ( P L A Y , F F , R E W ,S T O P ) F.AC-282 KnobA (DOLBYNRI RAC-285
Knob (POWER) RAC.280
Standby knob B-^ (TIMER) RAC-294
Standby knob ( M U S I CS E A R C H ) RAC-234
Front View with Panel Removed
T a p e c o un t e r RAW-189 * LED ILED4O2, POWER) 8G5524S
LED (LED4O1, EC} R PR5524S p Cassette late RAH.433 **
*
P LED(LED4O3.AUSE) BG55245
P u s hs w i t c h ( S 4 O 1 - 5 4 0 7 1 RSG-143 Control assembly RWG-137
*
E r a s eh e a d RP8-096 (R P 8 - 0 8 5 ) R E C / P Bh e a d RPB.O89 **
**
P u s hs w i t c h ( 5 3 0 5 ) RSG-144
**
P i n c ha r m a s s e m b l y RX B-720
**
P u s hs w i t c h a s s e m b l y
(s302-s304)
RSG-145 ** Slide switch (5408) RSH-066
t*
S l i d es w i t c h { S 4 O 9 . I M E R ) T RSH-064
5
Top View
/\** (o Transistor 701) 2 25D1 65
r\ **
(o801) Transistor 25D1 65 2
Fuse(FU1, T8O0mA) REK-O64
V a r i a b l er e s i s t o r( I N P U T } RCV-106
1\**
A *
Po*ur transformer 12201240V], RTT-293
Main assembly RWX.631
*'t
Motor assembly RXM.O76
Side assembly RWX-643
R A t t P l r n g " ts o l e n o i d RXP-127 ( RX P - 1 3)1
f'1 * P l u n g e rs o l e n o i d F
RXP.126 (RXP-130) i\ ** eusnswitch(S301) RSA-060
t
t*
**
Pushswitch (5305) RSG-144
Pushswitch assembly
(s302-s304)
RSG.145
-
-
Rear Panel View
[ ** Line voltage selector
RSX-045
"d#lY1-:-""-_*
* V a r i a b l er e s i s t o r( l N P U T } RCV-106 f T e r m i n a l4 - P ( l N P U T / O U T P U T ) R KB.O2O
Strain relief REC-396
AC power cord RDG-O36 (for HE type) RDG-049 (for HB type)
6
E15. BLOCK DIAGRAM
2
3
REC/PB SWICHES
[ .- -,.*l
I
FLAT AMPLIFIER
I i:+r i'--q I
+--rt_jr
i...
+.
I
h l::r' ?Y
tm
.-|.
LINE OUTPUT MUTE GATE
*-LadB-
DOLBY NOIS
B
HREc>
P.-.
AMP. RECOROING TAPE SELECTOR SWITCHES
: NORM 42l.7mV CrOz : 489.8mv M E T A L6 9 t . 8 m V T
I
o5os
g R E C O R D I N GI A S O S C I L L A T O R
D
-l'
1
2
3
I
4
5
6
CONTROL IRCUIT C
PLAY AL IN
-o o--1 FF I
{H
-
MUTE
REw I
-o5
-on
TION CIRCUIT tc 301
sToP I
m
I PAUSE I BIAS OSC, PAJSE .H I m PATJSE
I
FF SOL. MS REW SOL.
PrN soL. cH
MS SOL.
IlXrtSr,
aT
LINE MUTE ENO PULSE
R E CM U T E
AMP. RECORDING
P O W E RS U P P L YC I R C U I T
POWERIND,
-
4
5
6
6. CIRCUIT DESCRIPTIONS
6 . 1 O U T L I N EO F M A I N S T A G E Playback Equalizer Circuit The EQ amplifieremploys2-stage direct-coupled
amplifier, ild the NFB circuit is designed for playback equalization with normal (NORM) tapes. For playback equalization with chrome (CrO2) and metal (METAL) tapes, the transistor switch is turned on to incorporate the RC network in the output circuit of the EQ amplifier. Dolby Noise Reduction System The CT-X5 features the B-type Dolby noise reduction system (where the S/N ratio is improved by up to 10dB above SkHz) incorporated in a Dolby IC (HA1L226). RecordingAmplifier The recording amplifier uses a single transistor and has a high frequency peaking circuit in the emitter, and a trap in the output circuit to prevent leakage of the recording bias signal. The peaking response of the high frequency equalization circuit can be changed to give three different responses by the TAPE SELECT switches for different types of tape (NORM, CrO, and METAL). Further, during playback, both the input and output circuits of this amplifier a^re grounded. BiasOscillator This push-pull oscillator circuit supplies the erasehead with the erasecurrent, and the recording head with the recording bias current. The difvcc pltrse
ferent recording bias levels for the different types of tape (NORM , CrO2 and METAL) are switched by changing the oscillator power supply voltage which in turn varies the oscillating power. 6.2 CONTROLCIRCUIT The control circuit in this deck utilizes a onechip IC (PM9002B) which enables feather-touch operations. In addition to mechanism control, this IC also includes music search (MS), auto-stop, and timer start functions. And due to the digital counter frequency divider system employed in timing settings for the mechanism control, all operational timing discrepancies have been eliminated. The PM9002B pin layout is shown in Fig. 6-1, the functional block diagram in Fig. 6-2, and the output pin time charts during different modes in Figs. 6-3 and 6-4. For interrelations between circuits, see the block diagram on page 7. Operationsduring Each Mode The mechanical operations effected by the following circuit changes are described in the next chapter (seepage 14).
OFF
".. J
O
l,
''"t'
erav
f
ENO PULSE
a-EREC
PLAY
srop n-ew
M5
TIMING SENSE T I MI N G N OI S E FIL SIGNAL IN GND NOISE FILTER
L
x
TimanO clck OSC
itwsi6F FrIV TEC FAUSE
AR
&
divrdcr
p Fig.6-1 PM9002B inlayout
Fig.6-2
P M 9 0 0 2 B i n t e r n a lb l o c k d i a g r a m
Normal ooeration
PLAY STOP FF STOP REW STOP REC,/PAUSE PAUSE STOP REC STOP PAUSE PAUSE PLAY PAUSE
LINE
I'UTE
( Pin 27)
REC MUT ( Pin 28)
PINCH SOL ( Pin 24)
FF
SOL. 2O) SOL. 25) SOL. 23 1
( Pin RW ( Pin MS ( Pin
M t F i g . 6 - 3 P M 9 0 0 2 B i m e c h a r t ( W h e n S s w i t c hi s O F F )
Normal operation
MSSW:ON STOP RW FF STOP PLAY STOP REC STOP
Dir&t change REC FF REC PAUSE
LINE MUT ( Pin 271 REC MUTE Pin 28)
(
ErAS OSC ( Pin 22)
PINCH SOL. { Pin FF ( 29)
SOL. 26)
Pin
REW SOL. ( Pin MS { 25 I SOL. 23}
Pin
PAUSE Pin 2l )
F i g .6 - 4
M P M 9 0 0 2 B i m e c h a r t ( W h e n S s w i t c hi s O N ) t
'10
1. When the POWER Switch is Switched ON Then the POWER switch is switched on, * bV is applied to pin 1 (Vcc) of IC401. During the initial period when pin 1 voltage is being increased from 0V to 5V (approximately from 0.6V to 2.4V) the IC's internal reset circuit is activated, putting the IC into stop status which is maintained for about four seconds. During this time, Do change can be effected by pressing any of the other operation control buttons.
PINCH PLAY SOL., -'l--------{1
2. Play lVlode When the PLAY button is pressed,the level of pin 5 (PIEY) of IC401 is switched to ,,L,, level, and the level of pin 24 (PINCH SOL) to ..H" level. Q503 is turned on and the pinch roller activated. In addition, IC401 pin 27 (LINE MUTE) is opened 416ms after the PLAy button is pressed, thereby releasing the line mute status to enable play mode operations to commence.
LINE MUTE Llct6msl-
(oPEN) RTE (GNO) REC
ALTNE g/OUTPUT
Fig. 6-5
PLAY mode operation
3. RecordingMode When a cassette half with its erasure prevention tabs intact is loaded in the deck, pin B (AR) of IC4OL is switched to ('H" level, thereby enabling the deck to be switched to recording mode. When the REC button is pressed, IC401 pin 4 tnEel is changed to "L" level. PitjlO (REC) is also changed to "L" while pin l-g (REC) is open. As a result, the REC indicator lights up and the reed relay (RY501) is switched off, therebyT
Fn prNcH
SOL. z P I N C HS O L .
7 switching the signal path to the recording circuit. And the IC401 pin 24 (PINCH SOL) changed to '6H" level, tape transport is commenced. pin 22 (BIAS OSC) is opened 52ms after the REC button is pressed, thereby activating the bias oscillator. Pin 27 (LINE MUTE) and pin 28 (REC MUTE) are opened 416ms after the REC button is pressed, thereby releasing the line mute and recording mute status to permit recording to start.
PUSHUP HEAO BASE AAIO PINCH ROLLER
fi-0CASSETTE HAtf WITH E.P TABS IS LOADEO
bsc. ie;ri5 - r-152m#
I
rnsf -r44,t6 I RECMUTE
I
B|ASOSC.
)-lqe.n,t!, -
uure I r-rrue
nEi
t
|
L------r
^-^
REC
TO OPEN ('H' LEVEL) REC/PB. HEAD .\LINE g/UJTPUT
+12v A)
L I N EI N P U T
'H'ACTVE
H'ACTIVE
Fig. 6-6
REC mode operation
4. Fast Forward Mode When the FF button is pressed IC401 pin 8 (TD is changed to "L" level, followed by pin 26 (FF SOL) being changed to "H" level 416ms later. Q50L is thus turned on, activating the FF solenoid to start fast forward operation.
O5Ol: OFF(z146ms)-ON
lights up. And since pin 27 (LINE MUTE) of ('H" level, the signal circuit is this IC is changed to muted. If the REC and PAUSE buttons are both pressed,IC401 pin 20 tnEel and pin Zf IFAUSE-) are changed to "L" level, resulting in both the REC and PAUSE indicators lighting up, and the signal circuit being switched to recording circuit. Furthermore, pin 27 ts opened, permitting output of the signal to LINE OUTPUT, but since pin 28 has been changed to 66H" level, recording mute mode is maintained.
REC LINE
MUTE MUTE
q
FF mode operation
Fig. 6-7
pause $lX BUrroN x F i s .6 - 9 P A U S Emodeoperati on
5. Rewind Mode When the REW button is pressed, IC401 pin 7 (RE-W)is changed to "L" level, followed by pin 25 (REW SOL) being changed to "H" level 416ms later. Q502 is thus turned on, activating the REW solenoid to steut rewind operation.
. PLAY-PLAY
MUSE
tc4o4
+,; f.frqp"t0502:OFF(4{6ms}-ON
+lx
REW BUTTON
;
F i g . 6 - 1 0 P L A Y P A U S E o d eo p e r a t i o n m
Fig. mode 6-8 REW operation
. STOP-REC PAUSE r--r lC4O4
6. Pause Mode pause mode in this deck is released by The pressing the PAUSE button. The pause mode is not released by pressing the PLAY button during play/pause mode, or the REC button during recording/pause mode. Note, however, that pressing the PLAY button during recording/pause mode switches the deck to play/pause mode, and pressing the REC button during play/pause mode switches the deck to recording/pausemode. If the PAUSE button is pressedduring stop mode, pin 2 (FAttSE) and pin 21 (PAUSE) of IC401 are both changedto "L" level, thereby lighting up the PAUSE indicator. When both the PLAY and PAUSE buttons are pressed, IC401 pin 2L is changed to '(L" level, and the PAUSE indicator
E0Y?5*or
BUTTON
REc +
F i g .6 - 1 1 R E CP A U S E o d eo p e r a t i o n m
12
7. MS Operation When the FF or REW button is pressed with the MS button ON, tape transport is stopped at the blank portion of tape between tunes, and then recommenced in play mode. When the FF button is pressed with the MS button ON, IC401 pin 24 (PINCH SOL) is changedto "H" Ievel for 312ms. The pinch solenoid is thereby activated and the head base starts to rise. Pin 23 (MS SOL) of IC401 ((H" is changed to level 260ms after the FF button is pressed,resulting in Q504 being turned on and the MS solenoid being activated. Following completion of the "power assist" operation, the head base is thus moved to the MS position. The FF solenoid is activated 416ms after the FF button is pressed, resulting in fast forward tape travel. During this action, a fast forward playback signal is applied to pin L3 (SIGNAL IN) of IC401, and if this signal is interrupted for about 84ms (corresponding to a portion of blank tape between tunes) IC401 switches to playback mode automatically. The above operation is much the same when the REW button is pressed instead of the FF button.
8. Auto-stop Mode A photo-interrupter output is applied to pin 16 (END PULSE) of IC401 during tape transport, resulting in the capacitor connected to pin L7 (C408) being charged up and dischargedrepeatedly. The potential at pin 17 is thus kept below the threshold voltage, and prevents activation of the auto-stop mechanism. When tape travel stops and the take-up reel stops turning, the photo-interrupter output is no longer applied to pin 16, and the potential on the capacitor connected to pin 17 (C408) continues to increase until it exceeds the threshold voltage. The IC is thus switched to stop mode, thereby stopping tape mechanisms.
Fig. 6-13 Tape travel detection
IOFF(416ms){fil
'-leiemsf -- -{ ; FF SOL.
iot.l (32ms) MUSIC SEARCH (CUE)
L - - - - - - - I otN
:MS ; FFi
soL.
Q)1+zeo'*I
'
L|NE
i.____-l'!u_r_q
obl}$,,
Fi g.6-12 MS operati on
9. Timer Start Operation Timer recording, timer playback and off modes are attained by changing the potential of IC401 pin 18 (TIMER) to * Vcc, ground, and open respectively. When a cassette tape with erasure prevention tabs intact is loaded, and the POWER switch is switched ON with the TIMER switch (S409) in the TIMER REC position, recording mode is started about four seconds after the power comes on. If the erasure prevention tabs have been removed, however, the tape deck remains in stop mode. If the POWER switch is switched ON with the TIMER switch in the TIMER PLAY position, playback mode is started about four seconds after the power line voltage is established.There is no timer start operations when the TIMER switch is left in the OFF position.
t\,tc REC
. TIMER REC
orr o er-av t flr
(s409)
TIMER
TIMER STANOBY
CASSETTE ALF H W I T HE . P T A B S IS LOADED
F ig.6- 14 T i me rs ta rto p e ra ti o n
6.3 MECHANICAL OPERATIONS PlaybackMode The CT-X5 makes use of the capstan torque when shifting the head base during playback mode. (Both the recording/playback and erase heads are mounted on the head base). o StopMode (see Fig.6-151 The head base shift mechanism during stop mode is shown in Fig. 6-15. Operating lever (A) presses down towards cam (C) due to operating lever spring (B). With cam (C) combined with cam gear (D), clockwise torque is applied to this cam gear. Solenoid P is inactive, and the hook of gear lever (F) is kept against stopper (G) of cam gear (D) by the cam gear return spring (E), thereby keeping cam gear (D) stationary. The flywheel is belt-driven by the capstan motor, and rotates counterclockwise together with the capstan gear.
Gearleverreturnspring(E) Flywheel Camgear(D) Gearlever(F) Capstangear
Operating lever(A leveiS[ring (Bl Hebdbasedrive pin Solenor=E"liOperating Fi g.6-15 S TOPoperati on
ilffi
14
Switch to Playback Mode from Stop Mode ( s e eF i g . 6 - 1 6 ) 1. Solenoid P is activated O , ffid the hook
of
gear lever (F) is releasedfrom stopper (G) O . 2. Operating lever (A) is presseddown onto cam (C) by operating lever spring (B) O , carn gear (D) rotates @ and engagescapstan gear
(H)o
(B)
-+ Fig.6-18 STOP PLAYoperation 3 o Operation Different Parts of As can be seen in Fig. 6-18, the head base drive pin of operating lever (A) rises during playback mode. This pin forces the head base up through the action of the HB drive spring. The pinch compressor spring is also lifted at the same time, forcing the pinch roller into close contact with the capstan. Furthermore, the brake plate is lifted to release the reel brake. Pressure is also applied to the idler arm, resulting in the TU idler transmitting drive gear rotation to the TU reel base (the drive gear being belt-driven by the capstanmotor). (seeFig. 6-19).
S o l e n o i dP
'"'
lE
Fig.6-16 STOP + PLAY operation 1 Switch to PlaybackMode from Stop Mode (see ig.6-17) F 3. Cam gear (H) continues rotating due to capstan gear (H) @ , ffid cam (C) pushes operating lever (A) up O 4. After cam (C) pasises the point of maximum lift, cam gear (D) disengages capstan gear
(H) @
Drivegear TU reel base
TU i d l e r
F i s . 6 - 1 9Generation of take-up torque
-
(D)
F i g . 6 - 1 7S T O P+ P L A Yo p e r a t i o2 n o Switchto Playback Modefrom StopMode (see ig.6-18) F 5. Operating lever spring (B) forces operating lever (A) to press against cam (C) Q) , thereby tending to continue the rotationary motion of cam gear (D), but since stopper (G) catches the arm of gear lever (F) (E , cam gear (D) stops rotating and operating lever (A) becomes stationary (playback mode).
Mode to Switch StopModefrom Playback (see Fig.6-20) 1. When solenoid P is deactivated O , the arm of gear lever (F) is disconnected from stopper (G) bV the action of gear lever retum spring
(E) (D
2. Operating lever spring (B) forces operating lever (A) against cam (C) (D , resulting in rotation of cam gear (D) @ and lowering of the head base drive pin @ 3. Stopper (G) catches the hook of gear lever (F), stopping the mechanism in the condition shown in Fig. 6-15 (stop mode).
Rewind Operation When solenoid R is activated (see Fig.6-22'1, the drive arm is moved to the left, and the drive gear on the arm engages the supply reel gear resulting in rotation of the supply reel base. At the same time, the pin at the tip of the drive arm pushes the brake plate up, thereby releasingthe reel brake.
Brakeplate Brakeshoe S ol enoi d R Brakeshoe
-
Supply reelbase Drivegear Brakeplate Drivearm
Fig.6-22 Rewind operation MS Operation (Music Search) MS operation involves combination with fast forward and rewind operations similar to cue and review operations. At the beginning of MS operation, po\Mer is applied to solenoid P, resulting in the playback operation outlined in Figs. 6-16, 6-17 and 6-18 being effected in very short period of time, the head base being lifted by capstan torque. During this period, power is also supplied to the PMS solenoid. Although solenoid P is soon released, the PMS solenoid maintains the head base through the stopper lever. Since this PMS solenoid is. designed to maintain only the head base, the pinch roller and TU idler are released. This is followed by power also being supplied to solenoid F or solenoid R, resulting in cue or review operation respectively.
Note: If MS operation is started after fast forward or rewind mode has already started, solenoid F or solenoid R is released temporarily, and reactiuated after a brief period of playback mode (mechanically speahing).
(B)
Fig.6-20 PLAY+ STOP operation Fast Forward Operation When solenoid F is activated, the drive arm is moved to the right, and the drive gear on the arm engages the idler gil, resulting in rotation of the TU reel base as shown in Fig. 6-2L (the drive gear being belt-driven by the capstan motor). At the same time, the pin on the branch of the drive arm pushes the brake plate up, thereby releasing the reel brake.
Brakeplate Brakeshoe SolenoidF
Drivegear TU reel base Brakeplate Drivearm bracketpin Fastforward operation
Dr iv ear m Fig.6-21
-
2
T.EXPLODEDVIEWS
A
B
C
./
\..-2'
6//
D
2t--_
..aa''
-/ -A 22 20'
-l
17
1
I T
T
L
4
5
6
A
&:"
B
C
\
D
l
4
5
6
Parts List of Exploded View
NO?ES: o Parts without part number cannot be supplied. o The I marh found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. o For your Parts Stoch Control, the fast mouing items are indicated with the marhs ** and *. ** GENERALLY MOVES f'AS?EA THAN T. This classification shall be adjusted by each distributor because it depends on model number, temperature, humidity, etc.
Mark
No.
Part No.
Description Bonnet Screw Cassetteplate Door assembly Front panelassembly Knob (CONTROL) Knob B Knob A Fuse (T800mA) Main assembly Knob (POWER) Screw P o w e r t r a n s fo r m e r l 2 2 O| 2 4 O YI Screw S e n s i n gb e l t Tape counter Screw Eject knob Control assembly Standby knob Standby knob B Knob B Knob A L i n e v o l t a g es e l e c t o r Slidingstopper
Mark
No.
Part No.
Description H e a ts i n k Holder i C h a s ss Panel stay Bottom plate Connector 2-P C u s hi o n Connector 5-P Tape transport mechanism
**
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27-1 . 27-2. 24. 29. 30. 31. 51. 52. 53. 54. 55. 56. 57. 58. 59. 60.
RNA-592 BBZ3OPOSOFMC RAH433 RX8-693 RX8-692 RAC-282 RAC-277 RAC-276 REK-o@I RWX-631 RAC-280 VBZ40P060FMC RTT-293 BBZ30P080FZK RE8-240 RAW-189 vBZ26PO60FMC RAC-281 RWG-137 RAC-234 RAC-294 RAC-286 RAC-285 RSXO4s REC-355
61. 62. 63. 64.
b5.
66. 67. 68. 69.
Seepp.20-23.
A*
**
a**
A A
RDG-036 RDG-049 REC-396 RWX-il3 REC-369 RKP.663
AC power cord (for HE type) AC power cord (for HB type) Strain relief Side assembly Foot assembly C o n n e c t o r a s s e m b l y6 - P Front panel Mask Indicator panel C o n n e c t o r a s s e m b l y7 - P P.C.board spacer Counter holder S e n s o ra s s e m b l y Eject plate T r a n s i s t o ra s s e m b l y B T r a n s i s t o ra s s e m b l yA
19
Parts List of Tape transport Mechanism
NO?ES: o Parts without part number cannot be supplied. c The $, marh found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identicat designation. c For your Parts Stoch Control, the fast mouing items are indicated with the marks t* and *. ** GENERALLY MOWS FASTER THAN *. This classification shall be adjusted by each distributor because it depends on model number, temperature, humidity, etc.
Mark No. Part No. Description W a s h e rE - t y p e E j e c t l e v e rs p r i n g Eiect spring Washer CS-type Screw Cylinder O ring Piston Pocket spring Pocket Screw L o c k l e v e rs p r i n g Detector lever Screw Slide switch Screw Half spring Half holder Return spring Washer E-type HB return spring Shaft stopper R e f e r e n c ep i n Metal holder assembly Oil stop washer H B d r i v es p r i n g E r a s eh e a d R E C / P Bh e a d Head adjust spring Sub head base Screw Screw S p a c e r( f o r h e i g h t a d j . ) C o n n e c t o r a s s e m b l y6 - P P l u n g e rs o l e n o i d R Mark No. Part No. Description P i n c h p r e s s u r es p r i n g W a s h e rE - t y p e Drive belt Drive arm f ull assembly FR spring R e e l b a s ea s s e m b l y Brakespring Washer CS-type Brakeshoe ldler gear Washer Washer S u p p l y r e e l b a s ea s s e m b l y TU reel base assembly Cam gear Lever assembly Leverspring ldler arm assembly ldler pressure pring s TU idler Motor assembly Screw Flywheel assembly Capstan belt Cord clamper Eject plate spring Stepped screw P l u n g e rs o l e n o i d P M S Collar Eiect plate Eject lever Pocket frame Lock lever Side plate L assembly Head base C o n n e c t o r a s s e m b l y2 - P Solenoid bracket R Solenoid bracket F Chassis ssembly a PMS plate Brake plate Flywheel holder Thrust holder Side plate R Stopper lever
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11 . 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. * ** 26. 21. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40.
YE3OFUC R BH-949 RBH-951 YS3OFBT vcz26P090FMC RNL-261 REB447 R N L-534 RB K - 1 7 5 R NL - 5 2 5 ATZ26P080FMC RBH-948 R NL - 5 2 9 PMZ26P100FMC RSH-Os8 VCZ26P060FMC RNH-219 R NL - 5 2 4 RBH-778 YE4OFUC RBH65 REB416 RNL-527 RXB-716 R BF-050 RBH-794 RPB{96 (RPB-085) RPB-089 RBH-723 RNL-5)3 P M Z 2 0 P5 0 F M C 1 rMZ20Y150FMC RNF-989 RKP-663 RXP-127 ( R X P - l 3) 1 RNL{47 PMZ26PO6OFMC PMZ26P030FMC RXP-126 (RXP-l30) RBH-722 RNL-051 RXP-125 (RXP-1291 RXB-720
44. 45. ** 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 5 7. 58. 59. 60. 61. 62. 63. 64. 65. 66. 67. 68. 69. 70. 71. 72. 73. 101. 102. 103. 104. 10 5 . 106. 't07.
RBH90 YE2OFUC REB446 RX8-376 R BH-725 RXB-721 RBH-727 YS2OFBT RE B - 1 8 7 RNK-998 WA21D040D025 WA17D032D025 RXB-714 RXB-715 RNL-059 RXB-723 RBH-842 RXB-374 RBH-724 RNK-999 RXM-076 PM426PO4OFMC RXB-717 REB483 RNE-513 RBH-952 RBAO70 RXP-128 R LB-390
**
**
**
A
*
A
*
A
*
S o l e n o i da r m Screw Screw P l u n g e r o l e n o i dF s Gear leverreturn spring Gear lever P l u n g e rs o l e n o i d P Pinch arm assembly
108. 109. 110. 111. 112. 11 3 . 114. 11 5 . 11 6 .
A
* **
4 1. 42. 43.
eo
1
Tape Transport Mechanism
2
3
A
;Dt
(A)
,j-
\
/N-l
B
C
'w
at'
x
g-21
g
Y ,,---.
s-*aEF
tu
D
l
1
4
5
6
L
A
B
{
--@}-rT*I
'l
,llt\
'22 N I
2tl
60
I
C
\d) \0^H
43
til\
D
a''
l__
I
5
t
{
8. PACKING
No. Palt No. Description P a c k i n gc a s e Side pad P o l y s t y r e n es h e e t Operating instructions Ior HE type (English/German/ French/ltalian) Operaling instructions for HB type (Englishl Connection cord
1. 2. 3. 4.
RHG-533 RH4-249 RHC{23 R R E.O34
RRB,193 RDE{10
2
9. P.C.BOARDS CONNECTION DIAGRAM
3
A
LCH REC/P.B HE A D R CH
S I D EA s s ' y RWX-643
Q5O7 q5O8
Q 5 0 9 Q s r O0 5 0 6
vR5C.l
Q5Or-5O3
Q5O4
Q505
6*Qiillx,fo*:::'ggq?Oo sr.:'.ri . 2SC267t or zSCt383NC 5 Q5O5,5O9, 1O 2Sc174OLNol 2SCl8l5 or }SC2634NC q5O6-5OA eSCtT4OLN
"ffi
so4
B
YT ti6oz
ii.-.rr
H
il g g *-K':Js
rQ!oi
R514 4.71 "-0506 rlii
ri
'q1R502 rOl F50r I I
.'
M,
| .R5O3 k,ri,l:, R5o4i',609
C
SEN Ass
c6c !!{ t0
R5
GP4
'9? [ I
t
D
CONTROL Ass! RWG-'137
-l="
1
2
3
4
5
6
TRANSISTOR ( As s ,y A)
"q\ "E
2SDt265
M A I N A s s ' y R W X -6 3 1
26c2O6O er 73 or zSCl383NC 5lO 2sct74OLN or l5 or 2SC234NC ? s c . 1 7 4 0L N
Q210 QlO3 Q2O9 Q2O3 rC302 QrOg Q2O4 QilO Q.tO4
PLAY:20
/
\ tz.s
Qro6 Q2O6
Q2O
vR3o2 Vlisl
Ir---. '*r>f
'
010?
l Jofr
' 0506
lY?
e-l
,+:ffh..-li rYr*Lr cr.s' fli [ ll--.F l:l ''"''"T**+brll/" ,frHT"-ir? lil 'tFL*[-^1s; *b,#** * Itllllllll" --; -+ b, .'
-[,-t\12[;l +EJ
R,5! l f r R ? b o4 7 , q:+a< ",rd l.zr *"*, i
i-J":'^o*urq#E H U G ffiflt :*f-l t:tt+4 "t t" i:l :1. ,|] l:l,+**Ll+#f,,fu,*
" \F--" .Fl
l"l
,NPIJT
OUTPUT
gFruffi*,ntlewf
l'""'",8 -";ff1t'*, ;'rl,t ;r: r r,,,rt;, i::F*":"N:'trt Lfffi &d*h fu!,r t"# g:ffi* __;
r te^.i 1"":{s": ] + I ] I,i.l*rW'w"
no+l,l ilry.i4* J fi-p'""d{*'i ffilfoffiL i"
lryi"Jt*,,il1,,1..1" -=='-.' ---e-oz-zz, q,.l"g-,:,
SENSOR Ass'y
*.8*
c60l
ffi] ffi,'.;r: # .^'T'i ]l, i I'r''-.?::i + *fr*#' -d*+
l*-
ffii;r
ui l*::l$ru I |,;T' ""-i'?# iETtktl +\il?":;;l'la;""' r "", l-* .4i,,1" J"r=*;
":iil. *#ry: lri
-T!fiti$+-:l
ta/t6 R60 1.6t R602 200
*" l$il
6P4t I B
e,
:7r+ I :-- J-*" | "'"' T :L_l: l, #l-i--:rjr ;*:L% +:rnllll i fr;r' r ffi
{'*' :mF f3 ffi.*'t'ry{ffifu=|fl FlI
5
6
3;g ]lffi't+ ffi _ff l,rl*i Hjl" Il,#;h "-'
*-':l'^--l1"'"lS#8"- I ?r ffi;ffi ?o'flu #.f
t''i-r ffi."-ff#$"# diji
I^,.r
4
7
B
I
*K:[
.AY:20
0106 Q?o6 Q.205
RANSISTOR (A) Ass,y
TRANSISTOR A s s ' y( B )
A
;ffiF
PMS SOL RXP_I28 P I N C HS O L . R X P . 1 2 5 r R X P- 1 2 9 o
tl
it
.il
t t* . . I
I Rt49 rol
e'a
,?r
'rlllltogY + ,47/..a
REW SOL. R X P - l ? 7o r R X P - l 3 l
B
o;Ek 60/6'
.C3 il. i
FF SOL. RXP-.126 r RXP-130 o
t-;
r,'
1.5
1.,,,', <
+n* [f 4
AC 220V 50 / 6 0 H z
HA11226 rc30r IC302,303 TC40668P or HDl4O668P or MBA40669M q 1 o l , t o z , 2 0 1, ? o 2 25C2240 Q l O 3 , l O 41 0 6 - l t O , , Q2O3,2O4,206- zto 2SCr8t5 or 2SCl74OLN or 2SC2634NC Qro5,2O5 2SO13O2 2SA933LN Q30r or 25AlOl5 or ?SAl|27 D 1 o 3 , 1 0 5 , 2 0 3 ,0 5 , 3 0 5 , 3 0 6 2 152473 or USlO4O o1o4,2O4 1M60TP 14221 D30r 182C1 0302 D 3 0 3 , 3 0 4 , 3 0 7 ,3 0 4 ISR35 20301 wz-130 20302 az-120 wz-o44 20303
M0T0RAss'y RXM 076
REC DETECT RSH 058
T RTT- 293 l?4ov I
LINE VOLTAGE SELECTOR R S X- 0 4 5
-----J
D
I
7
8
I
r
1
I .2
3
10. SCHEMATIC DIAGRAMS
A
HA11226 IC301 IC3O2,3O3 TC4O66BP or HDl4O66BP or MB84O65 BM
-
B
-
C
A..o' *
o.ot/Ac400
L__
LIN
VOLTAGE
S E L E C T OR F5X-045
POWER SUPPLY CIRCUIT FOR HB TYPE
D
SLECTOR RSX-045
1
2
3
4
5
lol
NOTE:
ll l/^l
The indicated semiconductt only. Other alternatiue semit are listed in the parts list.
CONTROL _A..'y Rwe-tgZ
".1-*;
vR3Or 0oL8Y ilF LEVEL AOJ
27 LINE MUTE ON
tt SENSE TISE
28
|
REC Vcc TUTE IO T I NI TG 9
2r s 3 0 4 -| METAL 22
%us IC40l E r A so s c FUNCTTON CONTRO L
rem/orr
R246
| I
.Li^01 -
-^_
a
dui-pur rnr
LINE
l50t
i] ]-{
2/2)
DOLEY
NR
A P I
l . R M
ln
2. Cl
ln
ln
3.V
Q5O9,5iO SWITCHING REC'-ON ) { Q507,508 05c
4.O
a T
g br n
T d POWER '\,,1UTE
swtTc
OUT
S2 M AI
s3c
coN s4c s40 s40 s40 s40 ol s40 s40
s4c Q5Ol-5O4 25c2O6O o. 25C2673 or 2SCt383NC Q5O5, 509,5lO 25Cl74OLN or 2SCt8l5 or 2SC2634NC Q.5O6r50a 25Cl74OLN D5Ol- 5O4 0505, 506 lSR35 152473
54C
4
5
6
7
ndicated semiconductors are representatiue ones )ther alternatiue semiconductors may be used and ed in the parts list.
B
I
External Appearanceof Transistorsand lCs
2SA933LN 2SC1740LN 2SD1302 2SCl3fxfNC
Typc No
27 LIflE TUT
tt SENSE IIME
2A REC {UTE
IC 401 F U N C TI O N CONTROL
SENSOR Ass'y
2SA1015 2s'C2240 2SC1815 zSD1265
["";";l
7 ENO DITECT TI ME
I
STOP PUY 5 5 2 4 3
END PULSE _ _ _ 1 5 PAUSE REC AR
t:rrcz
|-:rs406
l______-J
rvpeNo&LotNo
'|YPeN'q='
lb
T:"\J-*
HA11226
2SA1127NC 2SC2634NC I{OTE, Playbach signal route Recording signal route
Type No
1. RESTSTORS: f ndicated M : Mo. in a,%W,y.W,'t5% tolerrfte unl6 othceis (F) : i l%, (G) : 12%, (K) : 1 t096 (M); 120% noted tolerance k : k0
^.,i
hpe Lot No
2. CAPACITORS: Indicaled Indicataon in cepaciry wilhout (!F)/voltag volrag i,50V (V) unl6 except otheei* eletrolytic nored p : pF capeitor.
3. VOLTAGE U : DC voltage (v) at no input signal
4. OTHERS: route. +:Signal Adiustinq point. A The I ponance be $re X mark found on $me component pans indicates th im of the slety lactor of lhe pan. Therefore, when replacing, lo use pans of identical desiqnalron capeitors and resistoB have parts numbers. carcuir may vary
2SC2060
marked
T91066BP HD14066BP MB84O66BM
This is the basic $hematic due to improvements
diagram, but the &tual
an design.
O U T S I O EO F P C B O A R D S1 52 : : ERASE PREVENT OETECTOR LINE VOLTAGE SELECTOR As s ' y POWER ON _ QII ON _ OFF ON _ qIE oN - Qfq Ql{- oFF HOLE - NO HOLE 220V - 240V
Lot No
-
MA IN
s3 0 1 s302 s303 s304 s305
2SC2673
PMgOO2B
CONTROL Ass'y S4OI .aO4 2SG2O6O or 5C2673 or 2Scl383Nc 509,51O 2SC174OLNor scl8l5 or ZScZSfcHc !50B 2scrz4oLN ,504 ,506 lSR35 15247! 5402: I I I I i | ot I s403: FF REW sIoP ON -.qEE oN _ Qff oN -8Il oN - Q!! O N _qEE ON -Q-E! oN - qEf ON _OFF REC_OFFPLAY
S4O4: PLAY 5405: PAUSE 5406: REc 5407 REC MUTE S4OBi [4USlc SEARcH S4O9: TIMER
:i
Type No
u sr o 4 o
tSR35
I
|
r
Bz-o5o _J
The underlaned indicates the switch oositron
7
B
I
11. ELECTRICAL PARTS LIST
NO?ES; c When ordering resr'sfors,first conuert resistance ualues into code form as shown in the following examples. Ex. 1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and K = 10%). and 47h ohm (tolerance is shown by J: SVo, 56x10t 561 .. R D % P SE G m / 560a .. 47x103 473.. 47ha .. RD%PSAAAJ
0.5{2 /a
0R5 . . 010..
RN2H oBtrX RSIPODOI(
Ex. 2 When there are 3 effectiue digits (such as in high precision metal film resistors). 5.62ht2 562 x 100 5621 . . . . RNV.SR tr6tr[] I. o The lt), marh found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. o For your Parts Stoch Control, the fast mouing items are indicated with the marhs ** and *. ** GENERALLY MOVES FASTER THAN *. This classification shall be adjusted by each distributor because it depends on model number , temperature, humidity, etc.
Micellaneous Parts P . C .B O A R D A S S E M B L I E S
Mark Part No. RWX31 RWG-137 RWX-643 No supply No supply No supply Symbol & Description Main assembly Control assembly Side assembly S e n s o ra s s e m b l y T r a n s i s t o r a s s e m b l yA T r a n s i s t o r a s s e m b l yB
Mark
Part No.
Symbol & Description
C E A R 3 3 M5 0 CEA R47M 50 cEA 010M 50 CEA 2R2M 50 C E A4 R 7 M 5 0 c E A 1 0 0 M1 6
c119, C123,C219,C223 c124,C224 c 1 1 1 , C 1 2 5 , C 1 3 3 ,C 2 1 1 ,C 2 2 5 , c233, C315 c3't7 c306 c1 08, c1 10, c121, C126, C130c132, C208, C210, C221, C226, c230-c232, C314,C316 c 1 0 3 ,c 2 0 3 c107 , c207 c308-c31 0 c305, c31 1, C312 c307 c304 c 3 13 c302, c303 c 1 1 4 ,C 2 1 4 c 1 1 7 ,c 2 1 7 c1 05, c20s c 1 0 9 , c l 1 6 , C l 1 8 , C 2 0 9 ,C 2 1 6 , c2't8 c127 , C128, C227, C228 c129, C229 c1 06, c206 c 1 0 4 ,c 1 1 2 , C 2 0 4 , C 2 1 2 c 3 18
OTHERS
Mark Part No. Symbol & Description Power transf or mer (22O| 24OV I AC power cord (for HE type) AC power cord (for HB type) Line voltageselector FuseT8OOmA FUl P l u n g e rs o l e n o i d P P l u n g e rs o l e n o i d F P l u n g e rs o l e n o i d R
A A A A A A A
A A
*
,A
** ** * * *
RTT-293 RDG-036 RDG-049 RSX-045 REK{64 RXP-125 ( R X P -2 9 ) l RXP-126 (RXP-130) RXP-127 (BXP-131) RXM-O76 RXP-128 RSH-058 RPB-096 (RPB-O85) RPB-089
c E A 3 3 0 M1 6 cEA470M 10 cEA 470M 16 c E A 1 0 1 M1 6 cEA221M 16 c E A 3 3 1M 2 5 c E A 4 7 1 M1 6 c E A 1 0 2 M3 5 coMA 332K 50 coMA 472K 50 coMA 103J50 c o M A 1 5 3 K5 0 coMA 273J 50 coMA 393J 50 ccPSL 220J50 C K D Y B 1 O 2 K5 0 CKDYF 473250 RESISTORS Note :
Mark
** * ** * **
Moter assembly P l u n g e rs o l e n o i d M S Slide switch E r a s eh e a d REC/PB head
(RWX-631) PartsList of MAIN Assembly
CAPACITORS
Part No. Symbol & Description
When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before.
Part No. Symbol & Description V R 3 0 2 V a r i a b l e( I N P U T L E V E L ) VR101, VRI 02 Semi-fixed {2k-Bl
.\
cosH 471K 50 BCG-009 1 C E A N Ll O O M 6 C E AR l O M5 0
c 1 0 1 .c 2 0 1 ( C 3 0 1 C e r a m i c0 . 0 1 / A C 4 0 0 V ) c l 0 2 . c 1 1 3 , c l 1 5 , C 2 0 2 ,C 2 1 3 , c215 c120, c122, C220,C222
* *
RCV-106 RCP-1 50 (RCP-195)
3O
Part No. RCP-149 (RCP-193)
Symbol & Description vR102, VR202, VR301 Semi-ixed (1Ok-B) f lB30'l f 8302 Resistor diodearray (10P) & Resistor arrav lTPl
(RWG-137) Parts Listof CONTROL Assembly
CAPACITORS
Mark Part No. Symbol & Description
BYY-OO4 RYY-OO5 A R S l L Ft r t r t r J RD%PMF271J t R D ' / I P Mr ! t r J N L tr R D 7 4 P M N OJ
F r 3 0 1, R 3 0 3 R306 R 1 0 1 , R 1 0 3 , R 1 0 4 , R 2 0 1, R 2 0 3 , R204 Other resistors
CKDYF 103250 c E A 1 0 0 M1 6 c E A 0 1 0 M5 0 CEA B22M 50 coMA 103J50 coMA 473J 50 coMA 1ozu50
c401, c402 c408 c407 c403 c406 c404 c405
sEt!flcoNDUcToRs
Part No. Symbol & Description
** **
HA11226 TC4066BP (HD140668P) (MB840668M) 25C2240 2SC1815 (2SC1740LNl (2SC2634NC) 2SD1302 2SA933LN (2SA1015) (2SA1 27NC) 1 152473 (us1040) l M6OTP-B 18221-LC2 'tB2C1-LC2 1SR35-1 00A
tc301 rc302, rc303
RESISTORS ualue Note : When ordering resistors,conuert the resistance into code form, and then rewrite the part no. as before.
Mark Part No. Symbol & Description
** **
0 1 0 1 ,0 1 0 2 ,0 2 0 1 , 0 2 0 2 0 1 0 3 , 0 1 0 4 ,0 1 0 6 ,0 1 0 7 - 0 1 1 0 , 4203, 0204, 4206, a207 -0210 01 05, 0205 0301
RD%PMF471J trtrtr J RD%PM SEMICONDUCTORS Mark Part No. PMgOO2B 2SA933LN ( 2 S A 1 05 ) 1 (2SA1 27NC) 1 152473 (us1040) PR55245 BG55245 1M60
R 4 0 7 ,R 4 1 6 Otherresistors
**
Symbol & Description
**
** ** * * * *
tc401 4401,0402
A A A A
(A
A
* * * *
D 1 0 3 ,D 1 0 5 ,D 2 0 3 ,D 2 0 5 ,D 3 0 5 , D306 D104, D204 D301 D302 D303,D304,D307, D308 2D301 2D302 2D303
-D405 D401 LED4O.I LED4O2,LED4O3 D406
SWITCHES
Mark ** Part No. RSG-143
* wz-130 * Bz-130 * w2444
Symbol & Description
5401- 5407 Pushswitch ( F F , R E W , S T O P ,P L A Y , P A U S E , REC. REC MUTE) 5408 Slide switch (MUSICSEARCH) 5409 Slide switch (TIMER)
SWITCHES
Mark Part No.
**
RSH_O66 RSHO64
Symbol & Description
Pushswitch (POWER) 5301 5302- S304 Pushswitch assembly (TAPE SELECTOB) P u s hs w i t c h ( D O L B Y N B ) 5305
**
A
**
** **
RsA-o6o
RSG-145 RSG-144
OTHERS
Mark Part No. Symbol & Description CN401 Connector (9P) CN402 Connector (3P)
OTHERS
Mark Part No. Symbol & Description Terminal(lNPUT/OUTPUT) (4P) L 1 0 1, L 2 0 1 M P X f i l t e r L 1 O 2 , L 2 O 2 P e a k i n gc o i l ( 3 . 9 m H ) CN303 Connector (4P) CN304 Connector (6P) CN305 Connector (3P) CN306 Connector (3P)
RKP36 RKP33
R KB.O2O RTF-138 RTF.123 RKP635 RKP634 RKP639 RKP662
(RWX-643) PartsList of SIDE Assembly CAPACITORS
Mark Part No. Symbol & Description
c E A 4 7 0 M1 0 C E A 2 2 1 M6 R 3 c E A 0 1 0 M5 0 c o M A 1 0 2 K5 0 c o M A 1 8 2 K5 0 coMA 223J 50 coPA 332J 100 c K P Y B 4 7 1K 5 0
cs01 c502
c 5 10 c503, c504 c505 c506 c509 2 c 5 11 . C 5 1
31
RESISTORS Note : When ordering resisfors, convert the resistance ualue into code form, and then rewrite the part no. as before. Part No.
* A RCP-063 RSl LFoBoJ R D ' , 4 P Ma a ! J
Mark
Symbol & Description
V R 5 0 1 . V R 5 0 2 S e m i - fi x e d ( 15 0 k - B ) Rs13 Other resistors
SEMICONDUCTORS
Mark Part No. Symbol & Description
**
2SC2060 (2SC2673) (2SC1383NCl 2SC1740LN (2SC1815) (2SC2634NC) 2SC1740LN lsR3s-1ooA 152473 (us1040)
0501-0504
**
0505, 0509, 0510
** A * *
0506-0508 Dsol-D504, D5o7 D505. D506
A
* Bz-o5o
zDsol
OTHERS
Mark Part No. RNH-209 RTF-084 RTD-026 RSR-035 RKP-599 Symbol & Description S h i e l d c a s e1 4 " L501, L502 Trap coil L503 Osc coil RY501 Reed relay CN503 Connector socket (5P)
PartsList of SENSOR Assembly
Mark Part No. Symbol & Description
c E A 1 0 0 M1 6 E R D 7 4 P Mt r t r J
* GP-4118
C601 R601 R602 . D601
(A) PartsList of TRANSISTOR Assembly
Mark Part No. Symbol & Description
A
**
2SD1265
0701
(B) PartsList of TRANSISTOR Assernbly
Mark Part No. Symbol & Description
A
**
2SD1265
0801
12. ADJUSTMENTS
12.1 MECHANICAL ADJUSTMENTS Prior to starting mechanical adjustments, clean the capstan, pinch roller, idler and belt with an alcohol moistened swab. 12.1.1 Pinch Roller Pressure Adjustment 1. Put the tape deck into playback mode without loading a cassettehalf. 2. Gently push against the pinch roller arm with a tension gauge(servicepart no. GGK-047) and separate the pinch roller slightly from the capstan. (See Fig. 72-I). 3. Then ease the pinch roller back onto the capstan, and read the value when the pinch roller starts to rotate. If the reading fails to lie between 2009 and 3509, replace the pinch pressurespring (part no. RBH-890).
Tensiongauge ( P a r tN o . c G K - 0 4 7 )
12.1.3 Tape SpeedAdjustment 1. Connect a frequency counter to the PLAY terminals. 2. Play the 3kHz portion of the STD-301 test tape. At the beginning of the tape, the frequency should lie between 2995H2 and 8010 Hz, and may be adjusted by turning the variable resistor located in the capstan motor adjustment hole shown in Fig. 12-2. Turning clockwise increases tape speed, while turning counterclockwise decreases speed. the
Tape speed increased
Tape speeddecreased
O screwdriver Capstan Fig. 12-2 Tapespeed adjustment
Pinchpressure spring ( P a r tN o . R B H - 8 9 0 ) Fig. 12-1 Pinchroller pressure adjustment
12.1.4 FF Solenoid Adjustment 1. Put the deck into fast forward mode. 2. Loosen screw l) -d adjust the mounting position of the FF solenoid (plunger solenoid F) so that the square hole in the full reel base assembly is flush against the boss of the drive arm full assembly. (See Fig. 72-3). 12.1.5 REW Sole.noid Adjustment 1. Put the deck into rewind mode. 2. Loosen screw O und adjust the mounting position of the REW solenoid (plunger solenoid R) so that the square hole in the full reel base assembly is flush against the boss of the drive arm full assembly. (See Fig. 1-2.3). 12.1.6 Music SearchMode Adjustment 1. Put the deck into the MUSIC SEARCH mode. 2. Insert a screwdriver into the grooved section (A) of lever (B), and adjust the gap (G) to a separationof 7.8 to 8.1mm.
12.1.2 Reel BaseTorque Adjustment Measure the reel base torque during playback, fast forward and rewind modes with a cassette type torque meter (service part no. GGK-056). The measured values should lie within the ranges listed below in Table 1. If the measuredvalueslie outside these ranges, replace the supply reel assembly (part no. RXB-714), take-up reel assembly (part no. RXB-715) or the full drive a.rm assembly (part no. RXB-376). Table1
T U r e e l b a s ea s s ' y Playbackmode Fast forward mode Rewind mode 36 - 60g.cm 85 - 125g.cm * 2 - Sg.cm S u p p l y r e e l b a s ea s s ' y 2 - Sg.cm 2 - 5g.cm 85 - 125g.cm
NOTE: x denotesbach tensiontoroue.
5J
( B o s s D r i v i n g r mf u l l a s s e m b l y ) a
REW
F F position -+]* Contacting
TU reelbase assembly l d l e rg e a r
IFF Mode
ldler gear assembly Supplyreelbase Supplyreelbase assembly ( r F F s o l e n o i d p l u n g es o l e n o i d ) F ( r R R E Ws o l e n o i d p l u n g es o l e n o i d )
adjustment Fig.12-3 FF and REWsolenoid
*. Gi{ n \
Fig. 12-4
mode adjustment Musicsearch
12.2 ELECTRICAL ADJUSTMENT o Check the following points before starbing any electrical adjustments. 1. All mechanical adjustments must be completed. 2. Clean the heads and demagnetize the REC/ PLAYBACK head. 3. Level measurements are based on 0dBv : 1V. Connect a 50kg dummy resistor (47k- 52kSl) acrossthe OUTPUT terminals. 4. Use the specified test tapes for each adjustment. Although test tapes have both A and B sides,use the side with the lable (side A).
9. Proceed according to the specified adjustment sequence. Changing the sequence can prevent proper adjustments from being carried out, and subsequently result in loss of performance. sequence Adiustment 1. DOLBY NR level. 2. Head azimuth 3. Playback level 4. Playback equalization check 5. Record/playback frequency response 6. Recording level 7. Limiter effect check
LEV EL(dB)
STD-341A STD-608A STD-603 STD-604
Playback adjustments NORMAL blank tape CrO2 blank tape METAL blank tape
5 . Prepare the following measuring equipment. AC millivoltmeter, audio oscillator, attenuator, and oscilloscope. 6 . Unless otherwise specified, always adjust for both left and right channels. 7 . Unless otherwise specified, adjust with the DOLBY NR switch in the OFF position. 8 . Let the deck warm up for a few minutes before starting adjustments. Also leave the deck in playback and recording mode respectively for 3 to 5 minutes before starting playback and recording frequency response adjustments.
1 Oosec
1 Oosec
Sossc
1 Oosec
Fig. 12-5
STD-341Atest tape
VR201
VR1O2
VR1O1
^/A\
ilg
vR2o2
I^_l
(ltt!
/4.
@ VR5O1 @
l-1
|J | I
ll9l
v
v------1 F=l il F)l
ftril vo
rp
(DOL.R}
(DoL.L)
o rp
tn v'
Fig. 12-6
Adjustmentpoints
12.2.1 DOLBY NR LevelAdjustment
Settings AC mV meter . . Connect to TP (DOL.L) and TP (DOL. R) Input signal . . . 2kHz,- 30dBv (31.6mV) to LINE INPUT T a p e s e l e c t o.r. . . . . . N O R M Mode . .. Record
adjustment azimuth Fig.12-9 Head Procedure Adjust the azimuth adjustment screw for maximum AC mV meter reading. (Lock the screwswith screw lock after completing the adjustment). 12.2.3 Playback Level Adiustment Since this adjustment determines the DOLBY NR level during playback, it should be performed precisely. Settings AC mV meter . . Connect to TP (DOL. L) and TP (DOL. R) STD-341A (333H2, 0dB) Test tape Tapeselector .. .... NORM . . .. Playback Mode
TP (DOL. L) TP IDOL, R)
22.2d8! l11.6mvl
NR adjustment Fig. 12-7 DOLBY level
Procedure 1. A
Settings AC mV meter
. . Connect to OUTPUT terrninals STD-341A Test tape (10kHz, - 20dB) T a p e s e l e c t o r . . . . . . . NORM Playback Mode V R 1 0 1 a n d V R 2 0 1 . . .Turn clockwise to maximum position
IP {DOL, L)
leveladjustment Fig. 12-10 Playback Procedure Adjust VR101 (Lch) and VR201 (Rch) so that the meter reads - 1.2dBv (0.87V).
Fig. 12-8
Headazimuthadiustment
Equalization 12.2.4 Playback Check
Settings AC mV meter Test tape Tape selector . . Mode Connect to OUTPUT terminals STD-341A(333H2, - 20dB) (6.3kH2, - 20dB) NORM Playback
12.2.5 Record/PlaybackFrequency Response Adjustment
Settings AC mV meter Input signal Test tape Tape selector . . Mode Connect to OUTPUT terminals 333H2, - 30dBv (31.6mV) to LINE INPUT terminals STD-608A (STD-603,
sTD-604)
f ,"*"
NORM (CrO2, METAL) Record
l3
oom I OOFHm
o@ o0
3kHz level 3kHz rever 333H2 evel 333H2 level +1 5. -2 51
equalization Fig.12-11 Playback check Procedure 1. Play the 333H2, - 20dB portion and record the AC mV meter reading. 2. Then play the 6.3kHz, -2OdB portion, and check that the meter reading lies within +1.5 t2dB of the reading obtained in step 1 above. 3. Switch the tape selector to METAL, play the 333H2, -20d8 portion again, and record the meter reading. 4. Then play the 6.3kHz, -20d8 portion again, and check that the meter reading lies within -2.5!2dB of the reading obtained in step 3.
333H2 -3ft8v (31.6mV) 6.3kHz -30dBv {31.6mV)
( T
"un".o
)3
B-333H2revel +0 5dB lkBz rever
frequency Fig.12-12 Record/playback response adjustment Procedure 1. Adjust the INPUT level control so that the meter reads- 27dBv (44.6mV). 2. Record the 333H2, - 30dBv and 6.3kHz, - 30dBv signals, and adjust VR501 (L ch) and VR502 (R ch) so that the difference in the playback output signal level with the 333H2 level as the reference Ievel is +1.0d8 (+0.5+2dB). 3. Change the tape selector and DOLBY NR switch positions (See Fig. I2-i-3), and check that the frequency response is satisfactory.
PlaybackFrequencyResponse Test tape STD-341A T a p e s e l e c t o .r. . . . . . N O R M DolbyNR switch . . . . .OFF
NOTE: Due to "edge effect", compensate the right channel by -0.5d8 at 125H2 and - ldB at 63H2.
Testtape Tapeselector... DOLBYNRswitch
.. STD-603 CrO2 ..... ON
Testtape Tapeselector ... DOLBYNRswitch Overall Frequency Response Testtape Tapeselector ... DOLBYNRswitch
.. STD-604 . METAL ..... OFF
.. STD-608A . NORM ..... OFF
6.3rH! r?kl
Testtape Tapeseleetor ... DOLBYNRswitch
.. STD-604 . METAL ..... ON
Testtape Tape'selector... DOLBYNRswitch
.. STD-608A . NORM ..... ON
Fig. 12-13 Frequency response
t?aAz
Test tape Tapeselector... DOLBY NR switch
sTD-603
CrO2 OFF
12.2.6 Recording LevelAdjustment
Settings AC mV meter Input signal Test tape Tapeselector....... Mode Connect to TP (DOL. L) and TP (DOL. R) 333H2, - 10dBv (316mV) to LINE INPUT terminals STD-608A (STD-603,
12.2.7 Limiter EffectCheck
. . Connect to OUTPUT terminals Input signal . . . 333H2, OdBv (1V) to LINE INPUT terminals Test tape STD-608A T a p e s e l e c t o. . . . . . . N O R M r Mode . .. Record Settings AC mV meter
sTD-604)
NORM (CrO2, METAL) Record
5 . ? d a v{ s h v
)
Fig. 12-15 Limiter effect check
Fig.12-14 Recording adjustment level Procedure 1. Adjust the INPUT level control so that the meter reads- 5.2dBv (549mV). 2. Switch the DOLBY NR switch ON. 3. Record the 333H2, - 10dBv signal on the STD-608A test tape. Then adjust VR102 (L ch) and VR202 (R ch) so that the meter reads - 5.2dBv (549mV) when the recorded signal is played back. 4. Switch the tape selector to the CrO2 position and repeat step 3 using the STD-603 test tape. The playback output level should lie within - 5.2dBvt1.5dB. 5. Then switch to the METAL position and repeat using the STD-604 test tape. The playback output level should again lie within the - 5.2dBv t1.5dBv range. Procedure 1. Set the INPUT level control to the click stop position. 2. Confirm the AC mV meter reads -2dBvt1.5 dB.
12. REGLAGE
12.1 RGLAGES MECANIOUES Avant de commencer le r6glage m6canique, nettoyer I'entraineur, le rouleau de serrage, le pignon libre et la courroie d l'aide d'un tampon imbib6 d'alcool. R6glage la pressiondu rouleau de de serrage 1 . Faire marcher le magn6tophone en mode de lecture sansins6rer de cassette. 2 . Pousser doucement contre le bras du rouleau de serrage avec un 6talon de tension (6l6ment d'entretien No. GGK-O47) et 6loigner un peu le rouleau de l'entraineur. (voir Fig. 12-1). 3 . Puis reldcher le rouleau de serragevers I'entraineut, et lire l'indication lorsque le rouleau se met d tourner. Si la lecture n'atteint pas entre 200 et 350 gr, remplacer le ressort de serrage (6l6mentNo. RBH-890). 12.1.1
Tableau1
E n s e m b l es u p p o r t de bobine TU ( r 6 c e p t i o n) Jb - buq.cm 85 - 125g.cm 2 - Sg.cm E n s e m b l es u p p o r t de bobine ddbitrice 2 - 5q.cm 2 - 59.cm 85 - 125g.cm
Mode de lecture
Mode d'avance rapide
Mode de rebobinaqe
REMARQUE: *montteun couple tension retour. de de R6glagede la vitessede d6filement de la bande 1. Brancher un mesureur de fr6quence aux bornes de PLAY. 2. Faire lire la portion de SkHz de la bande d'essai STD-301. Au commencement de la bande, la fr6quence devrait 6tre de 2.995 et 3.010H2; elle peut 6tre r6gl6e en tournant Ia r6sistance variable qui se trouve dans le moteur d'entrainement lequel est 6quip6 d'un trou pour le 16glage (voir Fig. l2-2). En tournant vers la droite, la vitesse de d6filement est accrue, vers la gauche elle est diminu6e. 12.1.3
I n d i c a t e u rd e t e n s i o n ( E l 6 m e n tn o G G K - 0 4 7 )
Cabestan
Moteur du cabestan
V i t s s ed e d i f i l e m e n t de la bonde diminu6e Ressort de serrage ( E l d m e n tn o R B H - 8 9 0 ) Tournevis (-l
F i g .1 2 . 1
n R 6 g l a gd e l a p r e s s i o d u r o u l e a u e s e r r a g e . e d
F i s 12.2
R6glage la vitesse d6filement la bande de de de
R6glage couple de torsion d la basedu du rouleau Mesurer le couple de torsion d Ia basedu rouleau dans le mode lecture et dans le mode enroulement et d6roulement rapides d I'aide d'un mesureur de couple de tension en forme de cassette (6l6ment No GGK-056). La valeur mesur6e devrait se situer table d I'int6rieur des normes de la liste ci-dessous. 1. Si les valeurs d6passent ou sont inf6rieures, remplacer I'ensemble du rouleau d'alimentation (6l6ment No. RXB-714), enleverI'ensemblede rouleau (6l6ment No. RXB-715) ou I'ensembledu bras d'entrainement (6l6mentNo. RXB-376). 12.1.2
12.1.4 R6glage solenoide FF du 1. Mettre le magn6tophone en mode d6roulement rapide. 2. D6visser la vis 1 et r6gler la position de montage du sol6noide FF (sol6noide de plongeur F) de telle sorte que le trou carr6 de I'ensemble du rouleau de base touche I'embossement de I'ensemble du bras d'entrainement. (voir Fig. 12-3) 12.1.5 R6glage solenoidede REW du 1. Mettre le magn6tophone en mode de rembobinage. 2. D6sserrer la vis 2 et r6gler la position de montage du sol6noide de REW (sol6noide de plongeur R) de telle sorte que le trou carr6 de I'ensemble de rouleau de base touche I'embossement de I'ensemble du bras d'entrainement. (voir Fig. I2-3\.
Systdme de base ( e n s e m b l e u b r a sd ' e n t r a i n e m e n t ) d
du 12.1.6 R6glage mode de recherchede musique 1. R6gler la platine de magn6tophone sur le mode de recherche musicale (MUSIC SEARCH). 2. Introduire la pointe d'un tournevis dans la partie cannel6e (A) du levier (B) et r6gler l'6cartement (G) afin d'obtenir une s6paration de 7,8 d 8,1mm.
\
Position d'avance r a p i d e( F F )
Fig. 12-4
R6glagedu mode de recherchede musique
Contrecabestan
Support de bobine ddbitrice Contreabestan lMode d'avance r a p i d e( F F )
E n g r e n a g e ' e n t r ai n e m e n t d
Support de bobine ddrouleuse S o l 6 n o i d e( F F ) ( S o l 6 n o i d ed e p l o n g e u r F )
Support de bobine ddrouleuse
Sol6noiile(REW) ( S o l 6 n o i d e e p l o n g e u rR ) d
F i g . 1 2 - 3 R 6 g l a gd u s o l 6 n o i d e F e t R E W e F
12.2 REGLAGES ELECTRIOUES o V6rifier les points suivants avant de faire aucun r6glage6lectrique. 1. Tous les r6glages m6caniques doivent 6tre termin6s. 2. Nettoyer les t6tes et d6magn6tiser la t6te d'enregistrement/reproduction. 3. Les mesuresde niveau sont bas6essur OdBv : lV. Brancher une fausse r6sistance de 50kA (47k-52k0 ) sur les bornes de sortie. 4. Utiliser les bandesd'essaisp6cifi6es pour chaque ftgla4e. Bien que ces bandes aient deux cdt6s, A et B, utiliser le c6t6 identifi6 par A.
8. Laisser chauffer le magn6tophone pendant guelques minutes avant de faire un r6glage. Egalement, faire marcher le magn6tophone en mode lecture et enregistrement respectivement de 3 i 5 minutes avant d'op6rer les r6glages de r6ponse de fr6quence de lecture et d'enregistrement. 9. Proc6der en suivant la s6quence sp6cifi6e de r6glage. Un changement dans la s6quence peut empGcher un r6glage correct d'6tre fait et peut produire, par la suite, une perte de qualit6. de S6quence r6glage 1. Niveau de DOLBY NR 2. Azimuth de t6tes 3. Niveau de lecture 4. V6rification du filtrage de lecture 5. R6ponse de fr6quence enregistrement/lecture 6. Niveau d'enregistrement 7. Contrdled d6ffect de limiteur
Niwau (dB)
STD-341A STD.6O8A STD-603 STD-604
R6glage de lecture (PLAYBACK) Bande vierge NORMALE Bande vierge CrO, Bande vierge METAL
5 . Pr6parer les instruments de mesure suivants: Millivoltmdtre AC, oscillateur audio, att6nuateur et oscilloscope. 6 . Sauf indication contraire, r6gler toujours les canaux droite et gauche. 7 . Sauf indication contraire, r6gler avec le bouton DOLBY NR en position OFF.
oT-]
-;l
I ttl
:ssx.
r-T--=_----l 3 3 H 2 lokHz 3
I |
I
6.3kHz
I
,, ;;;
,;.,",;,,,o"0,o
VR201 VR5O2
VR101
@
VR50l
rf-rc\!3/b
Fig. 12-6
Points de r6glage
12.2.1 R6glage niveau DOLBY NR. du de
Positions
Millivoltmdtre AC. . . Brancher sur TP (DOL. L) et TP (DOL. R) Signal d'entr6e 2kHz, -30dBv ( 3 1 , 6 m V ) sur LINE INPUT S6lecteur de bande . . NORM Mode . Enregistrement
Iiillo
_!-\q
I I TlaF
Tdte d'effacement
R 5 9 l a g el a v i s d e l'azimuth de ttes
Tdte d ' e nr e g i s t r e m e n/ t
o o
Ent16. IINPUT)
Fig.12.9 R6glage l'azimuth tCtes de de Marche suivre i R6gler la vis de r6glage d'azimuth pour une indication maximum du millivoltmdtre AC. (Bloquer les vis avec du vernis de blocage une fois le r6glage termin6.)
-l7.9dav {127mV}
30dBv l31,6mV)
F i 1 . 1 2 . 7 R 6 g l a gd u n i v e a u e D O L B y N R e d
Marche suivre d 1. Ajuster le contr6le de niveau d'entr6e de telle sorte que le millivoltmdtre AC indique -22,2d8v (77,6mV). 2. Commuter le DOLBY NR. (ON) 3. R6gler VR301 de telle sorte que le mesureur indique - 17,9dBv (127mV). R6glage I'azimuth de t6tes de Positions M i l l i v o l t m d t r e A C . . . Brancher sur les bornes de sortie Bande d'essai STD-341A (10kHz, - 20dB) S6lecteurde bande . . NORM Mode Lecture VR101 et VR201 . . . Tourner vers la droite pour position maximum 12.2.2
12.2.3 R6glagedu niveau de lecture Comme ce r6glage d6termine le niveau du DOLBY NR pendant la lecture, il doit 6tre fait avec pr6cision. Positions Millivoltmdtre AC . . . Brancher sur TP (DOL. L) et TP (DOL. R) Bande d'essai . STD-841A (BBBHz,0dB) S6lecteurde bande . . NORM Mode . . Lecture
V R 1 0 1 ( c a n a rs a u c h e ) . VR201 (canaldro,t)
F i g . 1 2 . 1 0 R 6 9 l a gd e n i v e a u e l e c t u r e e d
Marche suivre d R6gler VR101 (canal gauche) et VR201 (canal droite) de telle sorte que le mesureur indique - 1,2dBv(0,87V).
F i g .1 2 . 8
R 6 9 l a gd e l ' a z i m u t h e t t e s e d
12.2.4 V6rification filtre de lecture du
Positions M i l l i v o l t m d t r e A C . . . Brancher les sur bornes de sortie STD-341A (333H2, - 20dB) Bande d'essai (6,3kH2,- 20dB) S6lecteurde bande . - NORM Mode . Lecture
f rer"
de de 12.2.5 R6glage r6ponse fr6quence re enregistrement/lectu
Positions Millivoltmetre AC. . . Brancher sur les bornes de sorlle
J
lj
e6@
@ @ 19,:rx., "i"mu
333H2, - 30dBv (31,6mV) aux bornes de LINE INPUT Bande d'essai STD-608A (STD-603. STD604) S6lecteurde bande . . NORM (CrO2, METAL) Mode . . Enregistrement Signal d'entr6e
oo oo
- 333Hn.veau- 251 2dB
Fig.12.11 V6rification filtrede lecture du Marche suivre d 1. Faire marcher la portion de 333H2, - 20dB et enregistrer les lectures du millivoltmdtre AC. 2. Ensuite, faire marcher la portion de 6,3kHz, - 20dB, et v6rifier que les indications du mesureur sont proches de +1,5 12dB de la lecture faite en 1 ci-dessus. 3. Commuter le s6lecteur de bande e METAL, faire marcher i nouveau la portion 333H2, - 20dB et enregistrer I'indication du mesureur. 4. Ensuite, repasserla portion 6,3kHz, - 20dB et v6rifier que les indications du mesureur sont proches de -2,5t2d8 de la lecture faite en 3 ci-dessus.
333H2 3OdBv (31,6mV) 6,3kH2 3OdAv {31.6mV}
w
I 3kHz. niveau-333H2. niveau =+0.
F i g . 1 2 - 1 2 R 6 g l a gd e r 6 p o n s e e f r 6 q u e n c e e d enregistrement/lecture
Marched suivre 1. Ajust