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(Dr:torueen'
ORDER NO. ARP-215-O
GT-llo
Thisservice manual applicable the ZE type. is to Ce manueld'instructionse refdreau modede r6glage. frangais. en Estemanualde servicio tlata del metodode aiusteesclito en espafrol.
STEREO CASSETTE TAPE DECK
CONTENTS
r. sPEcrFrcATtoNs
23. 4. 5. 6. 7. FRONT PANEL FACILITIES, , , . C I R C U |D E S C F | P T T O N. S .. . . . . T .. . BLOCK DIACBAI!1 DISASSEI\4BLY PARTS LOCATION EXPLODED VIEWS AND PARTS LIST , 2 3 10 12 l3
8. ELECTBICALPARTSLIST......... 9. ]0. lt. PACKING P , C B O A B D SC O N N E C T I O N I A G F A I V D
SCHEfu'IATIC DIAGRAN] 12- ADJUSTMENTS
2l 23 . . . . 24 27 30
PIClNEEFI
ELEciTFIc!NIC
FIoNEEFTELECTFONTC (UAAI tNC. r9e5E PToNEEF ELEcTFoNtc [EUFolPEI N.v. FIONEEE ELECTEIONIC
CClFIFc'FATIclN
OomnsuezSr,L
Y Z G ) S E P . l q 3 2 P r l n r e di n J : p d n
1.SPEC|FtCATIONS
Systems Compactcassette,2-channel stereo H e a d s . . . " H a r d P e r m a l l o yr e c o r d i n g / p l a y b a c ka d x 1 " . he " F e r r i t e "e r a s i n h a dx g 1 l \ 4 o t o r .. . ....... DCservomotorx 1 W o w a n d F l u t t e r . . . . .No more than 0.05%(WRMS) .. ( N o m o r et h a n 1 0 . 1 7 % O l N) 'l F a s t W i n d i n g T i. m. e . . . Approximately 10 seconds . . {C-60tape) Frequency Response - 20dB recording: Normaltape . . . . . . .30to 16,000H2 (40 to 15.000H2 t3dB) Chrometape .......30to16,000H2 (40 to 15,000H2 i3dB) lvletal tape .......301o16,500H2 (40 to 15,000H2 l3dB) Signal-to-Noise Ratio D o l b y N R O F F . . . . . . .. . .. .. . . M o r e t h a n 5 T d B NoiseReductionEffect D o l b y N R O N . . . . . . . M . r et h a n 1 0 d B{ a t s k H z ) . o HarmonicDistortion No more than 1.0%(0dB) Input (Sensitivity/l\4aximum aliowable input/lmpedance) M I C ( L , R ) . . 0 . 3 5 m V / 5 7 m V / 1 0 . 5 k O , 6 m mi a m .j a c k d (Reference MIC impedance;250fl 1OkO) to LfNEflNPUT) . . . . . . . 50mV 25Vl75kO / Output (Reference level/Load impedance) LINE (OUTPUT) 45OmV/50kf,2
MISCELLANEOUS
......DC20V . 4 2 0 ( W )x 1 0 1 { H ) x 2 3 7 ( D ) m m ( 1 6 - 9 / 1 6 W ) x 4 ( H ) x 9 - 3 / 8( D ) i n . Weight(without package) . 3 . 3 k 9{ 7 l b 4 o z ) Dimensions P o w e R e q u i r e m e n .t s . , . r . .
FURNISHED PARTS
Connection cord DC Power cord
NOTES:
1. R e f e r e n cT a p e s : N o r m a l& L H : D I N 4 5 5 1 3 / B L A T T e 6 or equiv. CrO, DIN 45513/BLATTT (CrOz ) or equrv. Reference Recording Level: fvleter 0dB indicating level ('l60nwb/m magnetic level = Phillips cassette reference level) Reference Signal:333H2 W o w & F l u t t e r : . J I S [ 3 k H z , w i t h a c o u s t i cc o m ( p e n s a t i o n w e i g h t e dr)m s v a l u e ]D I N [ 3 . 1 5 0 H 2w i t h , (weighted)PEAK valuel; DIN acousticcompensation 45507 Frequency Response:a Measuredat -20d8 level. D O L B Y N R O F , l e v e l d e v i a t i o ni s 1 6 d B w i t h o u t indication. Signalto Noise Ratio: o Measured the third harmoat nic distortion 3% level, weighted (DlN 45513/ B LATTT). Sensitivity: Input level (mV) requiredfor reference recording level with input (REC) controls set to maximum. Maximum Allowable Input: While decreasing settings of input (REC) level controls and increasing level at i n p u t j a c k s .t h i s i s t h e m a x i m u mi n p u t l e v e l( m V ) a t the point where recording amplifieroutput waveform becomes clipped. Beference Output Level: Playbackoutput levelwhen meter indicates 0dB.
2.
3. 4.
5.
6.
SUBFUNCTIONS
. . . . a o . ( D o l b yN R s y s t e m O N / O F F ) t y p e B positiontapeselector (NoFM/croz /M ETAL) 3 lC full logiccontrol Air damp ejectfunction Full automaticstop mechanism One-touch recording system L E D l e v em e t e r l
7.
8.
9.
2. FRONT PANEL FACILITIES
swrrcH @ eowen
P u s h i n g t h i s s w i t c h t u r n s o n t h e p o w e r a n d c a u s e st h e p o w e r i n d i c a t o r t o l i g h t . P u s h t h e s w i t c h a g a i n t o r e l e a s ei t w h e n s w i t c h i n g off the power to the unit. . T h e m u t i n g c i r c u i t i s a c t i v a t e da f t e r t h e P O W E R s w i t c h h a s b e e n set to ON and the unit will not operate for about 4 seconds. This is not a failure or malfunction. . When the POWER switch is set to OFF while the unit isoperating, t h e u n i t ' s o p e r a t i o n i s r e l e a s e da n d t h e s t o p m o d e i s e s t a b l i s h e d .
I tl
(STOPI : Push this switch to stop the tape travellingand to release he function switches. t (Pausef : Push this switch to stop the tape temporarily d u r i n g r e c o r d i n g o r p l a y b a c k . R e l e a s ei t t o a l l o w t h e t a p e t o r e s u m et r a v e l i n g . The tape does not stop during fast forward or rew i n d o p e r a t i o n s e v e n w h e n t n e l l ( n a u s e )s w i t c h a sp u s h e d .
swtrcHEs @ reee sELEcroR
T h e s e s e l e c t o r sa l l o w t h e t a p e ' s b i a s a n d e q u a l i z a t i o n c h a r a c t e r i s t i c s t o b e s e l e c t e dd u r i n g r e c o r d i n g a n d t h e e q u a l i z a t i o n c h a r a c t e r i s t i c s during playback, in line with the type of tape being used. : R e l e a s et h e t e f t s w i t c h t o t h e " o u t " ( I Normal tape ) positton. Chrome tape : Push the left switch to the "in" ( ) position a n d r e l e a s et h e r i g h t s w i t c h t o t l r e " o u t " ( I ) Motal tapo oosition. : Push both left and right switches to the ,'in" position ( ).
@ e.lecrBUTToN
Push this button to open the cassette holder. To close the cassette holder, push the top back until it locks. . D o n o t p r e s st h i s b u t t o n w h i l e t h e t a p e i s m o v i n g .
DooR @ cnsserrE reeecouNTER @
This shows the position of the tape by means of a 3-digit meter.
BUTToN @ coururEn REsET
P u s ht h i s b u t t o n t o r e s e tt h e t a p e c o u n t e r d i s p l a y t o 0 0 0 .
@ eowentNDtcAToR @ nec tNDtcAToR
This lights during the recordingmode.
@ oolav* NRswtrcH
Push this switch to ON when recording with the built-in Dolby noise reduction system and when playing back tapes which have been recorded using the system. For other tapes,do not push this switch.
@ enuserNDtcAToR
T h i s l i g h t s d u r i n g t h e p a u s em o d e .
@ rurcJAcKs
These are the input jacks for microphone recording. plug the left channel microphone into the L jack and the right channel microphone into the R .iack.
@
LEVEL tNDtcAToRs
T h e s e i n d i c a t e t h e i n p u t l e v e l d u r i n g r e c o r d i n ga n d t h e o u t p u t l e v e l during playback.
@ rrueurLEvELcoNTRoL
U s e t h i s t o a d l u s t t h e l e v e l o f t h e i n p u t s i g n a l sf r o m t h e M I C i a c k s or from the rear panel LINE INPUT terminals.Rotating this control c l o c k w i s e i n c r e a s e s h e l e v e l . F o r f u r t h e r d e t a i l s ,r e f e r t o S E T T I N G t T H E R E C O R D I N GL E V E L . The word "Dolby" and D0 are trademarks of Dolby Laboratories L i c en s in g C o r p o r a t i o n . N o i s e R e d u c t i o n S y s t e m m q n u f a c t u r e d u n d e r l i c e n s ef r o m D o l b y L a b o r a t o r i e s L i c e n s in g C o r p o r a t i o n .
swtrcHEs @ rurucrroN
O ( R E C ) : P u s h t h i s s w i t c h t o s t a r t r e c o r d i n g .W h e n d e p r e s s e d to the ON position, the REC indicator tights. The switch does not work when a cassette is not loaded or when the erasure prevention tabs of a loaded cassette have been broken off. (REWI : Push this switch to rewind the tape at high speed (from right to teft). (FF) : Push this switch to send the tape forward at hiqh speed (from left to right).
<
>>
5
3. CIRCUITDESCRIPTIONS
3.1 PLAYBACK CIRCUIT The signal from the playback head is amplified by the Q102/Q103 2-stage direct-coupled amplifier. In the NORM position, the playback equalization (120ps) compensation is achieved by the NF circuit between the Q103 collector and Q102 emitter. In the METAL and CrOz positions, Q104 is turned on, and the equalization characteristics switched from 120ps to 70ps to compensate the frequency response. The level of the EQ AMP output is set by a variable resistor, and further amplified by the Q401 flat amplifier before being parised through the MPX filter and applied to pin 2 of the Dolby IC. This Dolby circuit consists of IC401 (HA11226), and the Dolby ON/OFF switch is linked to the MPX filter ON/OFF switch. When the Dolby switch is OFF, the 19kHz filter is bypassed. The Dolby circuit output appears at pin 8 of IC401, and is passed to LINE OUTPUT via a switching IC (IC402). 3.2 RECORDING IRCUIT C The input signal from the microphone jack is amplified by the microphone amplifier IC101, and passed via the MIC/LINE selector switch to the INPUT volume control where the input level is adjusted. This adjusted signal is passed via IC103 to flat amplifierQ40l. D313 and D314 in the stage before IC103 form a protector circuit designed to protect IC103 from large input signals. The via signal amplified by the flat amplifier is pa.ssed pin 2 of the Dolby IC, the output the MPX filter to appearing at pin 8. The level of this output is adjusted by variable resistor. Then after equalization in the REC AMP (Q106) in accordance to the type of tape being used, the signal is passed +g to the recording head. 3.3 CONTROL CIRCUIT The control circuit in this deck utilizes a onechip IC (PM90028) which enables feather-touch operations. In addition to mechanism control, this IC also includes auto-stop function. 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. 3-3, the functional block diagram in Fig. 3-2, and the output pin time charts during different modes in Figs. 3-4 and 3-5. For interrelations between circuits, see the block diagram on page 10, 11 and in Fig. 3-1.
4
Operationsduring Each Mode The mechanical operations effected by the following circuit changes are described in the next chapter (seepage 7). 1. When the POWER Switch is Switched ON When the POWER switch is switched on, *5V is applied to pin 1 (Vcc) of IC102. 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 intemal reset circuit is activated, putting the IC into stop status which is maintained for about four secondsafter the power switch is switched ON. During this time, no change can be effected by pressing any of the other operation control buttons.
r c r o z P M 9 O O 2B
pquse an
REC p r-a y STOP REW REC REC/PB head REc PAUSE BIAS
osc
oFa
MUTE SI G N A L
LINE OUTPUI
MS PINCH LINE MUTE
REw "iI&,
Er ENO OETECT TIME
b F i g . 3 - 1 C o n t r o ls y s t e m l o c kd i a g r a m
2. Play Mode When the PLAY button is pressed,the level of pin 5 (FLAY) of IC102 is switched to "L" level, and the level of pin 24 (PINCH SOL) to "H" level. Q306 is turned on and the pinch roller activated. In addition, IC7O2 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. 3. RecordingMode When a cassette half with its erasure prevention tabs intact is loaded in the deck, pin 3 (AR) of ICLO? is switched to "H" level, thereby enabling the deck to be switched to recording mode. When the REC button is pressed, IC102 pin 4 (REC) is changed to "L" level. Pin 20 (RE'C) is also changed to "L" while pin 19 (REC) is open. As a result, the REC indicator lights up and the reed relay (RY301) is switched off, thereby switching the signal path to the recording circuit. And the IC102 pin 24 (PINCH SOL) changed to "H" 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.
4. Fast Forward Mode When the FF button is pressed, IC102 pin 8 (-F-F) is changed to "L" level, followed by pin 26 (FF SOL) being changed to "H" level 416ms later. Q304 is thus turned on, activating the FF solenoid to start fast forward operation. 5. Rewind Mode When the REW button is pressed, IC102 pin (REW) is changed to "L" level, followed by pin ? 25 (REW SOL) being changed to "H" level 416ms later. Q305 is thus turned on, activating the REW solenoid to start rewind operation. 6. PauseMode The pause mode in this deck is released by 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 (PAUSE) and pin 21 (PALJSE)of IC102 are both changedto "L" level, thereby lighting up the PAUSE indicator. When both the PLAY and
vcc L I N EM U l E REC MUTE EX0 PULSE Bras osc REC plu * AR REC
R E CI U T E LITEMUTE FF SOL
+tzy
pTiv s-ioF n-EF
1,,,'
l
N F g
R E WS O L Pr{ca soL
n
AUTO STOP TIME ENO PULS
F i g . 3 - 2 P M 9 0 0 2 B n t e r n a b l o c kd i a g r a m i l
p Fig.3-3 PM9002B in layout
5
PAUSE buttons are pressed, IC702 pin 2t is changed to "L" level, and the PAUSE indicator lights up. And since pin 27 (LINE MUTE) of this IC is changed to "H" Ievel, the signal circuit is muted. If the REC and PAUSE buttons are both pressed,IC102 pin 20 tnEel and pin Zf (FAUSB) 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 is opened, permitting output of the signal to LINE OUTPUT, but since pin 28 has been changed to "H" level, recording mute mode is maintained.
7. Auto-stop Mode A photo-interrupter output is applied to pin 16 (END PAUSE) of IC102 during tape transport, resulting in the capacitor connected to pin 17 (C312) 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 L7 (CgLz\ continues to increase until it exceeds the threshold voltage. The IC is thus switched to stop mode, thereby stopping tape mechanisms.
o TimingChart
Normal ooeration Key input \ .M.d"\ Terminal \
LINE IIUTE
PLAY l
STOP
H
STOP J
STOP
FF r
FF
STOP {
REW
STOP REC/PAUSE AUSE STOP P
STOP
REC REC
STOP
PAUSE PAUSE
PAUSE STOP
PLAY
PAUSE
PAUSE
PLAY
STOP
REW
( Pin 27 1
L
I
-L_
RC
STOP
STOP
STOP
PLAY
RC MUTE ( Pin 28) REC ( Pin 20)
REC ( Pin 19)
H
t_ t_
J I
J
t_ t_
J
L
I
L
H
ErAS OSC I Pin 221
PINCH SOL ( Pin 24)
J
H
FF
SOL. 26)
H
( Pin
_,r-
REW SOL. ( Pin 25)
H
r
F i g .3 - 4 P M 9 0 0 2 Bi m e c h a r t t
PAUSE ( Pin 2t,
Normal oprataon \
Oirsct changs PAUSE REC
\
-M;A\
Key input
FF Blank REC STOP
H L
Terminal \ LINE MUTE I Pin ?rl REC MUTE Pin 28) REC ( Pin 20l REC ( Pin 19)
H fl
L
(
t_
H
8 rA S o s c ( P i n 221)
PINCH SOL. ( Pin FF ( 291
J
tl L
H
SOL. 26)
Pin
REW SOL. ( Pin 25 1 PAUSE ( Pin 2l)
H
F i g .3 - 5
P M 9 0 0 2 Bi m e c h a r t t
3.4 MECHANICAL OPERATIONS PlaybackMode The CT-110 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 3-6) Fig. The head base shift mechanism during stop mode is shown in Fig. 3-6. 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 retum 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.
Gearleverreturn spring (E) Cam gpar(Dl Capstangear
Nff."
SotenojF ( Operatinglever'SpringBl F i g . 3 - 6 S T O Po p e r a t i o n
Modefrom StopMode Switchto Playback (see 3-7) Fis. 1. Solenoid P is activated () , and 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 , ctun gear (D) rotates @ .nd engagescapstan gear
(H)0.
(B)
-+ 3 Fig.3-9 STOP PLAYoPeration o Operation Different Parts of As can be seen in Fig. 3-9, 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 pressuer spring is also lifted at the same time, iorcing the pinch roller into close contact with the capstan. Furthermore, the brake plate is lifted to releur" the reel brake. Pressureis 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 capstan motor)' (seeFig. 3-10).
Solenoid P
\e/
t!,
-+ 1 Fig.3-7 STOP PLAYoperation Modefrom StopMode Switchto Playback (see 3) Fig. 3. Cam geax (H) continues rotating due to capstan gear (H) @ , attd cam (C) pushes operating lever (A) up O . 4. After cam (C) passes the point of maximum lift, cam gear (D) disengages capstan gear
(H)o.
Drivegear
( c )1 A )
TU reelbase
t n F i g . 3 - 1 0 G e n e r a t i oo f t a k e - u p o r q u e
(D) Fig. 3-8 2 STOP-+ PLAY oPeration
Switch to PlaybackMode from Stop Mode (seeFig. 3'9) 5. Operating lever spring (B) forces operating lever (A) to press against cam (C) ) , thereby tending to continue the rotationary motion of cam gear (D), but since stopper (G) catches the arm of gear lever (F) (E , cam gezr (D) stops rotating and operating (playback becomes stationary lever (A) mode).
Mode Switchto StopModefrom Playback (see 3-11) Fig. 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) @
2. Operating lever spring (B) forces operating Iever (A) against cam (C) (D , resulting in rotation of cam gear (D) @ and lowering of the head base drive pin (p 3. Stopper (G) catches the hook of gear lever (F), stopping the mechanism in the condition shown in Fig. 3-6 (stop mode).
Rewind Operation When solenoid R is activated (see Fig. 3-18), the drive arm is moved to the left, and the drive gear on the arm engagesthe 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 releasing the reel brake.
Brakeplate Brakeshoe SolenoidR
I
Supply reelbase
Brakeplate
Drivearm
F i g .3 - 1 3 R e w i n do p e r a t i o n
F i g .3 - 11 P L A Y - + S T O Po p e r a t i o n
Fast Forward Operation When solenoid F is activated, the drive arm is moved to the right, and the drive gear on the arm engagesthe idler gear, resulting in rotation of the TU reel base as shown in Fig. 3-12 (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
D r i v ea r m
F i g .3 - 1 2 F a s tf o r w a r do p e r a t i o n
I
4. BLOCK DIAGRAM
,.
MIC AMPLIFIER
+
t<_
25 dB _____->l
E Q U A L I Z E RA M P L I F I E R
REC,/PBHEAD
CONTROL CIRCUIT
E R A S EH E A D
20 dB --*l I
MPX FILTER
D O L B YN R C t R c u t T
I
REC AMPLIFIER
M E T E RC I R C U T I
-ql
H I G HI h 6 |
I METAL -l
ffinu-c'o'3 0 t - 7 s30r-3 s
LINE O UT P U T
swrTcH stor :
I N P U TS E L E C T O R TAPE SELECTOR s 3 0 r - 7 : APE SELECTOR T s 3 0 r - 9 ;D O L B Y N R
LINE I.IOR U CrOa ON ON ON oN ON ON -
MIC II IEN METAL
OFF OFF OFF oFF OFF
s60r : s6O2 r I tc roz
5604 s605 s606 S9Ol s r20l
FF REW STOP i P L AY . P AU S E r REC
oN -_qir
OFF
r POW R E P E R A S E R E V E N T E T E C T O R O L E - N OH O L E D H T h e u n d e r l i n e d i n d i c a t e st h e s w i t c h p o s i t i o n .
P O W E RS U P P L Y C I R C U I T
+Bt(il.7v) + 82(12.3v)
+83(r2.3V) +84(5V)
11
5. DISASSEMBLY
Counter belt
Eiectknob
N
D oor assembly
N.-
knob assemblyS Volume
Volume knob panel
t1
1. Remove the bonnet by undoing screws O and lifting the back part of the bonnet up and pulling it to the rear. 2. Remove the cassette door by pushing the eject button to open it and then pulling it up and out. 3. The volume assembly can be removed along with the volume panel by pulling off the volume knob and then undoing the volume assembly,s hexagonal nut. 4. The counter is removed by undoing screws @ and slipping off the counter drive belt. The counter drive belt can be temporarily rested on the side panel R assembly of the mechanical assembly.
5. The display assembly is removed by lifting up and releasing the three hooks on the top part of the front panel assembly @ , pushing down and releasing the two hooks on the center section, and pushing the top part of the display assembly to the rear. 6. The froqt panel assembly is removed by undoing screws @ 7. The mechanical assembly is removed by undoing screws @ and then sliding it to the rear. WARNING:
When assembling, first attach the f-ront panel assembly, then attach the disphy assembly. At this time be sure to connect the ground lead to the front panel,
6. PARTS LOCATION
NOTES: c Parts without part number cannot be supplied. o The $ mark 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 ,r, ** GENERALLYMOVESFASTER THAN *. This classification shall be adjusted by each distributor because it depends on model number, temperature, humidity, etc.
Front Panel View
Bonnet RN4.595
** Door assembly RXB-724
nob cap A
RAC-287 r LED LN31 GP 7 ' LED LN21 RP 7 LED LN101111P
Volume knob assembly RAA-372 MIC jack RKN-O8O nob cap C
Front panel assembly RXB-725 Eject knob RAC-292 Power knob RAC-29'l
Counter RAW.190
Function panel RAH-439 Knob cap B RAC-288
RAC-289
Push knob RAC-290
I J
Top View with BonnetRemoved
D.C. power jack RNK-082
Main assembly RWX-637
T r a n s i s t o ra s s e m b l y( F )
T e r m i n a l( L l N E l RKB-018
T r a n s i s t o ra s s e m b l y ( E )
LBY NR assembly
RWX-638
**
D.C. power switch R5A-062
t*
Pushswitch assembly RSG-139
**
Motor assembly RXM-076
Volume assembly
**
P l u n g e rs o l e n o i d R RXP-127 ( R X P - I 3 1) P l u n g e rs o l e n o i d F BXP-126 (RXP-130)
S e n s i n ga s s e m b l y
*
Counter belt RE846g
View RearPanel
Terminal(LINE) RKB-018
14
7 . E X P L O D E DV I E W S A N D P A R T S L I S T
'l \
h
t8
.(D
@
\-v-sg
l2
S \ l
5 \
58---B @
4w"
{o.) l \
l \
/tr) \s-l
A
I
42
w.b
,rfu
5rB
@
58 )
d
59
I
,fi"
l'---1
v-c/
NO?ES; o Parts without part number cannot be supplied. o The A marh found on some component pafts indicatos the importance of the safety factor of the part. Therefore, tthen replocing, be sure to use parts of ide.nticat designation. o For your Parts Stoch Control, the fost mouing items are indicated with the marhs ** and. *. ** GENERALLY MovEs FASTERTHAN *. This classification shall be adjusted by eoch distributor becauseit depends on model number, temperature, humidity, e tc.
Part List
Mark No. Part No. Description B o nn e t Eject spring Eject knob Front panel assembly Door assembly Knob cap A Knob cap B Knob cap C Function panel Volume knob assembly Volume panel Cassette plate M e c h a n i s ma s s e m b l y S e n s i n ga s s e m b l y Photo interruptor Counter holder Counter belt Counter P . C . B .h o l d e r Volume assembly Variable resistor(20k) Meter panel Indicator assembly LED holder LED LED Pushswitch LED DOLBY NR assembty Connector socket 14P Connector socket 10P C o n n e c t o r a s s e m b l y2 P C o n n e c t o r a s s e m b l y6 P Main assembly D.C. power lack Terminal(LINE) Connector 2P Connector 3P (Bl Connector 3P (C) Connector 3P (A) Mark No. Part No. Description Connector 10P P u s hs w i t c h a s s e m b l y Connector4P Connector 6P MIC jack Push knob T r a n s i s t o ra s s e m b l y ( F ) T r a n s is t o r T r a n s i s t o ra s s e m b l y ( E ) Power switch assembly D.C. power switch Power knob Earth spring Rivet Main chassis
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 2 1. 22. 23. 24. 25.
RNA-595 RBH-956 RAC-292 RX8-725 RXB-724 RAC-287 RAC_288 RAC-289 RAH439 RAA-372 RAH437 RAH-436
**
4'1 . 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 57. 58. 59. 60.
RKP24 RSG-139 RKP-625 RKP_626 RKN{80 RAC-290 25D1276
**
*
RSAO62 RAC-291 RBH-955 RBM-O01
GP-4118 R NL - 5 3 6 REB468 RAW-I90
**
REC-355 Slidingstopper REC-369 Foot assembly BBZ30P080FZKScrew PMA3OPO6OFMC Screw
Plate
RCV-I04 RAH438 RWX-639 LN317GP LN217Rp Rsc-143 LN101it1p RWX-638 RKP-606
*
). 26. ** 21. * 2a. 29. 30. 3 1. 32. 33. 34. 35. 36. 37. 38. 39. 40.
RKP-663 RWX-637 RKNO82 RKB-O18 RKP-629 RKP630 RKP628
17
/frN
75
lr
I'u
-A--65
S-ss
./l \
I W'
28
18
K r
77
T
@-so
32
48
tt@
N<
q6
)'N}&)1,*6ef
6e< xo
TA* "p9-Ui-so
Bt4,
f_65
il35
b\
K
"f,77
T \
I
--at'
19
Part List
Mark No. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. Part No. Description Eject lever Eiect leverspring Eject spring Cylinder O ring Piston Pocketspring Pocket Lock lever L o c k l e v e rs p r i n g Detecterlever Slide switch SideplateLassembly Half spring Half recectacle Mark No. 51. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61. 62. 63. U. 65. 66. 67. 68. 69. 70. 71 . 72. 73. 74. 75. 76. 77. 78. 79. 80. 81. Part No. RXB-715 RNLOsg RXB-723 RBH42 RXB-374 RBH-724 RNK-999 RXMO76 Description T U r e e l b a s ea s s e m b l y Cam gear Lever assembly Leverspring ldler arm assembly ldler pressurespring TU idler Motor assembly Flywheel holder Thrust receptacle Flywheel assembly C a p s t a nb e l t Cordclamper Side plate R Washer
RBH-949 RBH-951 RNL-261 REB447 RNL-534 RBK-175 RNL-525 RBH-948 RNL-529 RSH{58 RNH-219 RNL-524
**
**
RXB-717 REB483 R N E - 5 13 YS3OFUC
16. 17. 18. 19. 20.
21 . 22. 23. 2q. 25. 26. 27. 2A. 29. 30. 31. 32. 33. 34. 35. A * 36. 37. 38. 39. 40. 41 . 42. 43. 44. 45. 46. 47. 48. 49. 50.
RBH-778 RBH65 REB416 RN L-527
R X B - 7 16 RBH-794 RPB-G)G (RPBO8S) RPB-089 RBH-723 RNL-523 RKP63 RKP-127 ( R K P - l 3 1I RNLO47
Returnspring
Head base
HB return pring s Shaftstopper pin Reference
Metal holder assembly HB drive spring Connector assembly 2P E r a s eh e a d REC/PB head Head adlust spring Sub head base Connector assembly 6P PlungersolenoidR Solenoid arm Solenoid bracket R PlungersolenoidF Solenoid bracket F Gear leverreturn spring Gear lever P l u n g e rs o l e n o i d P Chassisassembly Counter belt PMS plate Pinch arm assemblv Pinch pressure pring s Drive belt Drive arm full assembly FR spring Reel base assemblv Brake spring Brake plate Brakeshoe ldler gear S u p p l y r e e l b a s ea s s e m b l y
YS3OFBT Washer VCZ26PO9OF MC Screw PMZ26P1OOFMC Screw VCZ26P06OFMC Screw YE4OFUC Washer R BFO5O PMZ2OP1 0FMC 5 |MZ20Y1 50FMC RNF-989 PMZ26P060FMC PMZ26P030FMC YE2OFUC YS2OFBT WA21D040D025 WA17D032D025 Oil stop washer Screw Screw Spacer(0.1) Screw Screw Screw Screw Washer washer
* **
A
*
PMA26P040FMC Screw
A
*
RXP-126 (RXP-130) RBH-722 RNL-OSl RXP-125 ( R X P - 12 9 ) REB468 RXB-720 RBH-89O REB446 RXB-376 RBH-725 RXB-721 RBH-727 REB-187 RNK-998 RXB-714
** **
**
*
8 . E L E C T R I C A LP A R T S L I S T
NO?ES: o When otdering resdsfors, first conuert resistance values into code form as shown in the following examples. Ex. I when there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47h ohm (tolerance is shown by J = |Vo, and K = lOVo). 56On 56xIOt 561 .. .. RD%PSE6Ul.l 47ke 47x10. 473... RD%pS@AA7
0.5a ro
oR, . . 010..
RN2H OBE/( BSIPO0Ok
Ex' 2 When there are 3 effectiue digits (such as in highjr-ec-ision metal film resistors). 5.62h{, 562 x 100 5621. . . . RNV:SR trGltrmr c The $. mark 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. c 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.
Miscellaneous List Parts
P.C.BOARD ASSEMBLIES
Mark Part No. Symbol & Description Main assembly DOLBY NR assembly Indicator assembly Volume assembly Sensing assembly Power switch assembly Transistor assembly ( E) Transistor assembly (F) Mark Part No. Symbol & Description
RWX-637 RWX-638 RWX.639
coMA coMA coMA coMA coMA
102K 50 182K 50 103J50 153J50 223J 50
c 3 1 7 ,C 3 1 8 c319 cl13,C213 cl17, C217 c316 c124, C125,C224, C225 c126, C226 c310 c31 5 c105, cl 12, c205, C212 cl03, cl 11, c203, c211 c332. C333 c123,C223 C314 c323,C324
MainAssembly (RWX-637)
CAPACITORS
Mark Part No. Symbol & Description
coMA 273J 50 coMA 393J 50 coMA 473J 50 coPA 332J 100 ccPSL 220J 50 c c P s L 1 0 1 J5 0 ccDsl 151K 500 CKPYB471K 50 C K D Y F 1 0 3 25 0 CKDYF 473250 RCC-007 cosH 471J 50 RESISTORS Note:
C K P Y B1 O 2 K5 0 C E A N L1 O O M 6 1 CEA R47M 50 c E A 0 1 0 M5 0 CEAR1OM 0 5 C E A 4 R 7 M5 0 c E A 1 0 0 M1 6
cl01. c201 c102. c109, C202, C209 c l 1 9 ,C 2 1 9 c118, C120, C121, C127, C218, c220, c221, C227, C31'l c321. C322 c304
c331 cl08, c208
c E A 3 3 0 M1 6 cEA 470M 16 c E A 4 7 0 M1 0 c E A 1 0 1 M1 6 c E A 2 2 1 M6 . 3 c E A 3 3 1 M1 6 c E A 3 3 1 M2 5 cEA 102M35
c l 0 4 , c l 0 6 , C l 1 4 ,c 1 1 5 , C 1 2 2 , c204, c206, C214,c215, C222, c 3 1 2 , 3 1 3C 3 3 0 C , c107,C207, C327 c307,c308 c116, C21 C309 6. c303, c325, C326,c328, C329 c320 c305 c302 c301.c306
When ordering resistors, conuert the resistance value into code form, and then rewrite the part no. as before.
Part No. Symbol & Description
Mark
RCP-150 (RCP-195) RCP-149 (RCP-193) RCP-155 (RCP-200)
VR101, VR201 Semi-fixedl22k-Bl (1Ok-Bl VR102,VR2O2 Semi-fixed (150k-B) VR3O1 VR3O2 Semi-fixed ,
Mark
Part No.
Symbol & Description
OTHERS
Mark Part No. Symbol & Description
A a
RM5-104J8 RstLF trtrtrJ D RD%PMF otrJ RD1/4PMtrtrDJ
R304 R340,R34r, R347, R34B R 3 3 9 ,R 3 4 3 Otherresistors
RSR-035 RKP-624 RKP25 RKP-626 RKP-628 RKP-629 RKP-630
Reedrelay RY3OI Connector10P Connector4P Connector6P Connector3P (A) Connector3P (B) Connector3P (Cl
SEMICONDUCTORS
Mark Part No. Symbol & Description
** r* **
BA328 PM9002B TC4066BP (HD14066B) (M884066BM)
rc101
tC102 tC103
(RWX-638) DOLBY NR Assembly
CAPACITORS
**
**
2sc1815 (2sc174oLN)
(2SC2634NC) 2SC1740 (2SCl740LN) 25C2240 2SA1015 (2SA933LN) (2SA1 27NC) 1 2sc2o6o (25C2673) (25C1383NC)
0 1 0 1 . o 1 o 4 - o 1 o 8 ,0 2 0 1 , o2o4-o2o8, o3o7
0311-0313
Mark
PartNo'
cEA O10M50 c E A R 1 0 M5 0 cEA R33M 50 c E A 1 0 0 M1 6 cEA470M 16
Symbol & Description
** **
0102, 0103, 0202, 0203 0303, O308-R310 c E A 4 7 1 M1 6 coMA 332K 50 coMA472J 50 coMA 153J 50 ccPsL 101J50
C401,C501 C 4 1 0 , C 4 1 3C 5 1 0 , 5 1 3 , C C408,C414, C508,C514 C 4 0 3 ,C 4 0 5 , C 4 1 1 ,C 4 1 2 ,U 1 5 , e c503, c505, c51 1, c512, Cs15 C417 C418 C404,C504 C407,C507 C406, C409, C506, C509 C402,C502
A
**
0304-0306
A
* *
1sB3s-1oo 1s2473 (us1 040)
D301.D302, D304, D3o8-D310, D318, RESISTORS
D319 D303, D3O5-D3O7,D311-D317 2D301 2D302 2D303 2D304 Note: When ordering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before
A A A A
wz-13s Bz-13s Bz-oso wz-o44
Mark
Part No.
Symbol & Description VR401 Semi-fixed (10k-B)
*
BCP-149 (RCP-193) RDY,PMF47IJ otrtrJ RD74PM
swtTcHEs
A
Mark Part No. Symbol & Description
R417 Otherresistors
** ** ** **
R KN-080 RSG-139 RKB-Ol8 RKN-082
5101. 5201 5301 5302 5303
Mic jack Pushswitchassembly SEMICONDUCTORS T e r m i n a( L I N E ) l DC power jack part No. Mark ** ** HA11226 TC4066BP (HD140668) (M8840668M) 2sc1815
symbol & Description 1c401 1C402
COILS AND TRANSFORMERS
Mark Part No. Symbol & Description
RTF-123 RTF-084 RTF-057 RTD-026
L101 L2Ol , L1O2,L2O2 L301 T301
C o i t( 3 . 9 m H ) Trap coil Line coil Osccoil
**
0 4 0 1 ,o 5 o 1
(2SC1740LN) (25C2634NC) * * 1s2473 (usl 040) 1M6o
D401.D501 D402, D502
e2
OTHERS
Mark Part No. Symbol & Description L4Ol , L501 MPX filter Connector socket (14P1
PowerSwitch Assembly
CAPACITOR
Mark Part No. CKDYF 473250 Symbol & Description C901 Capacitor
RTF-138 RKP.6O6
lndicatorAssembly( RWX-639)
CAPACITORS
Mark Part No. Symbol & Description
SWITCH
Mark Part No. symbol & Description S901 Switch
c E A 1 0 0 M1 6 cEA 470M 16
c601-c604 c605
A
**
RsA-o62
Transistor Assembly(E)
RESISTORS Note: When ordering resisfors, conuert the resistance ualue into code fonn, and then rewrite the part no. as before.
Part No. Symbol & Description Mark Part No. Symbol & Description
A
**
2sD1276
O1O01 Transistor
116, Mark
Transistor Assembly(F)
Mark Part No. SVmbol & Doscription
A
t R D % P Mr D t r J RD%pMFogoJ
R601-R606, R609 R607. R608
A
SEMICONDUCTORS Mark ** * * * Part No. 8A6124 LN101111P LN317GP LN217RP
Symbol & Description
**
2sD1276
Ql 101 Transistor
tc601, rc602 L E D 6 O 1L E D 6 O 2 , LED6O3, LED6O5 LED6O4
9. PACKING
SWITCHES Mark ** Part No. RSG-143
Symbol & Description
5601-5606 Pushswitch
VolumeAssembly
Mark Part No. Symbol & Description
*
RCV-104
VR8O1 Volume(20k-AI
Sensing Assembly
RESISTORS
PartsList
Mark No. Part No. Doscription Pad Instruction note Connection cord DC power cord Packing case SheetC Sheet
Note: When ordering resistors,convert the resistanceualue into code form, and then rewrite the part no. as before.
Mark Part No. R D z 4 P Mt r O t r J Symbol & Description
R701, R702
1. 2, 3. 4. 5. 6. 7.
RHA-250 PRHOO1 RDEO10 RDG-045 RHG-539 RHX-031
SEMICONDUCTOR
Mark Part No. Symbol & Description RTR701 Photo interrupter
**
cP-411B
3
1 O . P . C .B O A R D SC O N N E C T I O N I A G R A M D
DOLBY Ass'y RWX-638
A
B
INDICATOR RWX-639
r
f
4
MA|NAss,y RWX 632
Qto4 Q2O4 tc'or lP vR2Ot vFtoi oroSQro6 a2o6 ato3qzoo qlo7e|o6 oao!(io7 e2o5 Qro2 q2oz q2o tcro3
l-
etot eiot qro q! vRa(tz
I
I
E R A S EH E A O
QlOt Q:tOt QltO QaOT
7
8
I
q30. !cro2 curo50!06
A
B
st20l RASE PREVENT DETECTOR
POWER SWITCH As3'y
c
TRANSISTOR TRANSISTOR as3,y ( E) Ass'y ( F)
D
SENSOR Ass'y
7
8
I
j
MAIN Ass'y l l n . -
l
R W X- 6 3 7
LINE
z
: sror.20r M c /
3
1 1 .S C H E M A T I C D I A G R A M
r, Stot NE SELECTOR
A
LINE I N P U T( L )
l''"*:
1....
lo.o47 m + )to7 3/t6
t
R338 560
s 3 0 r- 9
ON
c toz to/t6
r'*
l+ n
t-
w
lo.el RroB 2ok
zc32e tool t6
c|05 2
I I R3ritg; VOLUME Ass'y! | u / 2 , l l ,l/f,,L- o",
A!L,
! r-'
a5
l
I ar
;;;l
I
I | |
?TY
4
_
OFF
2ok-a +---------H-r
REcLEVEL!
RcV-r04_J
t--;;; I-^*Iwx1lil ll--;;
I
R4t7
I
*
ci6\uzwt
DOL
|
| .""r r":'
LAT
Afi cl ik
l-E
lTr7
, Rtog iS.tf -rl-^^
l=l;;
i r l\5 lo.6fl
H F lctrt | toop c t o SI 47Op :
lorrs
+Ctls Rtl EL ADJ
Lch R E C / P .B H E A D I R ) B- O 8 9 P
w2
w
w3
l
I
q
nroz ! rok I Inv
ffi
,
Rll3 47o
l 1
Qros l
.l
F, l
crr3 o.ot
I lIClOI rc io3 MIC AMP swrrcHrNG ("H"-ON )
cQ74 33/t6
: c5t 2 7 / 0
-1
RilO 390k RU4 rsok e11r ;;il'
l
i''o
!.. [-i::r'li I.:i lE* )
)l to
lil1
t t t r I I 7_4 l o . sI
I
,i:ri"
,u
I oI I I
? + l '--t-L
T r
Y{u'Yl
ser* trtrtF
I
F
' -
IC401
-
F
t -
:--l IJ
Ft
' fl + l J 2o.33
TA
/50 t :R4 t3 '471
tg/t6 |
R4OE 5.6t
'l ,l
Lcqoi
D
L-
I t
Q101,201 SWITCHING (REc- oN) QlO2,lO3,2O2,2O3 E Q U A L T Z E RA M P
+
Q1O4,2O4 SWITCHING ( N O R M* O F F
)
R333 tok
L
R33 too
t( -5
t,, I
| , t-4:_tsI
I
R4o2 4.3k
H F le]) c402
lOOp I R4O5 'r50
t\:
?2k
6---d-r
l l ' l r lc404- i I t
F*'l lR407 I M
16418. L--A:47o/t6
+ !c+ro c.r/so
;4ll o/t6
F-.il
.C4t --A---J 7|
L
l
t t
I
t4 t4 t?k c4l
R4t2 '3.sk
czlo9 .oor5
*E
ICrO:
Il-----'l s4r-.i
ICrO3 ( r,/4 )
|
|
47/t6 IIC401 1c402 HA11226
B
w4
L
AC
tl
) - 2
-I
I l.i
I
I i
I I : I I I
Tc40668P or HDl4066B or MB84066BM
BACK
H : PLAY
RE
R3 335 rO
fc330 o/ t6 R336 22k c325 too/r5 -8. a t
l R : 34
R304 lOOlr
j i i
l :
,I
.-
"El'
sl
IC402 tzt+l
TC402 SWITCHIN
T
rr[-T-ltc 1c402 t4/41 r3 IC402 . (t/41
-t-
-
Q401,50t 2SC18t5 or ZSCl74OLN or 2SC2634 NC D4Ot, 501 152473 or USIO4O D402,502 1M50
7
I
['
t_
+
*trF
IC rO: B/4
l = - l I qTCtOsQ/4| | -t__
r
15,;
(2/41
l
Rch REC/P, B H EAD RP -O89 I
L
_l
o3
I
R2t3
R2t4
R2r5
, ,*,,,"
c2t8tJ
R 2 r O R 2| |
@
vR2
)l
D3r6 +
:;J i i",".+ l*..o, i. I l:
I I
t-------l
l\>
|
| csoo
R50
I
il 12 *---Q-r
:r
L l t + T i i
I T l l t f 't t
---
Tisos --T--t
R5t2
*
J-a. c5 r 2
R5t4
)
c22
R209 R208
1
7
-os|5
--l-
, - - - l1 uorr,%?fi.'r
- * r o - , I o I iIl r &4'I
P.L
C
LINE INPUT(
r)
H L-
I -l ail
;N
L I N E
I :{_-_-_tj
+
I
il I
t___
t i
!
l
t I
J'uo.
c503
?3l
+^ l t; ^ l _ ^
| is
l L50 |
I _l
C5O5 R5OB
I I 'n s r r I
f nsrr
I I l t + 0
lc5o7l
_l
9 t 2
r
I c5061
| f-
l +4 lc5o8
ro
c5il'
R504
t l L---d---J
r5
I
rc 4ot ( z/?l
r3
#
t l
It-
r3
L
2\oso
R34l 560 (rw)
ON
oFF
s3or-ro
: DoLBy
x t
l
)-r
I l@t ,---twv----{
VR30I t50k-B
' s it/5oo l -l
| I
.2
32
r_____,.-l
Y ' a i laS ) I E
-t-
:329 too
0 304
A
--r---"ww__--l I VR3O2 tso
r5Ok - B /SO
a@l
c3
I
ERASE
or x
\ E-J I HEAD I
P8 - O85
RPBo96
trl
- J
i-t Il L
.d-trr3Ollm
=ar,"l
o.o22l =cal;
R332 47k
lo-
| I I |
I
4312'313 osc qsrl swtrcHtNG (REC*oN)
Jcra {nsrr
t
D
L
I
I
I
03rI 20304
A /l\ ia
i
!-@
t
1
t
t
l o s rIz
$J9-' J"'*
la.3r3 | o.oot8 Q 3 rr R328 680 3?O
+
c32t o.t/50 c322 o.t/50
R 3 3 0; lo
- ---| -J c3r9
I R32 2?
+
i 'l ' *
D?
ll
I !-ti::'a ! l | i
l l
r' '- ---,-l
l ; -
c30| tooo/ 35
I
! L
- Il
r
Lq5 -
Tenot | 2SOt276 i REGULATORI
I
| r I
I
R303 47k
D317
TRANSISTOR Ass'yl | (F)
S9Ol: POWER I
t- cgor ? o.o47 I |
1"'i
I
R3 0 l c302 330 330/25
)-A
: zD3O I
--J .0o.1
too,/t6
R30 rol
4.7 lSO
I
POWER
_-r ! I
ITCH Ass'y I
t"=4
l34i 470 ltw
i
L-
f1
[02
__j
la\4 t E-'5f
f l
E6 E6
?so1?76 REGULAToR
__
tr Ii
! I
_l
t I I
R348 75 (t w)
A
C 3 0 67 tooo/' 35
L
c 307 47/t6
TRANSISTOR Ass'y I
(E)
Ig
,fi
c309 47/to
i
30
zD30 3
METAL
f_
|
|
s3o3
, ZD3 A r
s3or-r-30r-8: TAPE ELECTOR S
Cr02
S3Of-5
i,A!
gr(r/Zwl
l
<
DC POWERIN
S3Ot-l
S3Ot-2
1
2
3
4
5
6
-|
NOTE: The indicated semiconductors ar( only. Other alternatiue semiconduc are listed in the parfs llsf.
stot,2ol s30l T 30 l lto?r2o2 L30l RY30I I L r Ot , 2 O ICIOr lc10? rc 10 5 8A328 PM9002B Tc4066 BP or HD14O66B Qlo2,1O3, 2O2 ,2O3 ?sc2 240 Q3O3,3O8, 3O9, 3tO 2SAtOt5 or 2SA933LN or 2SAl 127 NC Q3O4, 3O5,306 ?sc2060 or 25C2673 or ?SCl383NC Q 3 . f1 , 3 1 ? , 3 1 3 25C17 4 0 or 2SC'l74OLN
or MB84O66BM QlOl,lO4 -lOB O2Ol, 2O4 -2O8,3OT 25Cr815 or 2SCl74OLN or 25C2634NC
D301,3o 2,304, D 3 O 8 , 3 O 9 , 3 1, 3 t g O I s R 3 5 - tO OA D303, 305, 306, 307 D 3 lI - 3 1 7 15247 3 or UStO4O o3t9 .rsR35-{OO 2D301 WZ-t35 2D302 gz-135 2D303 BZ-O5o 20304 wz-o44
I. RESISTORS: Ind,cated M : Ma, in Q,'AW,
(F) : t1%, I
2. CAPACITORS: Indcated Indlcation in capacitl without
3. VOLTAGE, \_] f,mA:
CURRE
, DC voltage
I
DC current i
4. OTHERS: { @ Trre Signal route. Adlusting mark point. foun
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This is the basic sch
D I C A T O RA s s ' y ( 1 / 2 ,
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IC60l ,602 L ED6OI , 6O LED603,60 LE D604
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fied semiconductors are representatiue ones r alternative semiconductors may be used and n the parts trsf.
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External Appearanceof Transistorsand lCs
2SA933LN 2SC1740LN HAl 1226
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c0A )6,307 r US lO4O r00 'r35 -r 3 5 .050 '044
2SA1015 2SC1815 Z5,CZ14O
2s,C2673
rype No
Lot No
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Type No
-
2SA1127NC 2SC2634NC rYPeNo 2sc1 74o
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8A328
Lot No
2SC1383NC
zSD1276
Type No
2SC2060
Lot No
TC4066BP HDl40668 MB84O66BM
SWITCHES: MAlN Ass'y
I fNDICATOR ss'y (2/2) A
SlO1,2Ol : MlC,/LINESELECTOR MIC LINE S3O1-1-4 : TAPE SELECTOR HIGH S3OI.5-8 : TAPE SELECTOR M E T A Ls301-9,10: DOLEY ON CrOz OFF NORM
8A6124
PM9OO2B
;;--l
REC PAUSE PLAY s606 s605 s604 STOP REW s603 5602 FF 560l
IN DICATOR Ass'y S 6 0 1 : F F S602 : REW 5603 : STOP S604: pLAy 5605 : PAUSE 5695 : REC
ON ON ON ON ON ON OFF OFF OFF OFF OFF OFF
R e c o r d i n g s i g n a lr' o u t e
D
POWER SWITCH Ass'y S9O1 : POWER
ON
-
OFF
S1201 : ERASE PREVENT DETECTOR HOLE - NOHOLE the The underlinedindicates switch position
j
7
B
I
12. ADJUSTMENTS
12.1 MECHANICAL ADJUSTMENTS Prior to starting mechanical adjustments, clean the capstan, pinch roller, idler and belt with an alcohol moistened swab. Adjustment 12.1.1 Pinch Roller Pressure playback mode without 1. Put the tape deck into 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. 72-7). 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 . G G K - 0 4 7 )
12.1,3 Tape Speed Adjustment 1. Connect a frequency counter to the LINE OUTPUT terminals. 2. Playback the SkHz portion of the STD-301 test tape. At the beginning of the tape, the frequency should Iie between 2995Hz-3O7O 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 decreasesthe speed.
Capstanmotor Tape speedincreased Tape speeddecreased
/
L
\
e
Capstan
screwdr:iver
Fig. 12-2 Pinchroller Pinchroller arm
Tape speedadjustment
spring Pinchpressure ( P a r tN o . R B H - 8 9 0 )
Fig. 12-1
adjustment Pinch roller pressure
12.1.4 FF Solenoid Adjustment 1. Put the deck into fast forward mode. adjust the mounting 2. Loosen screw O *d 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. 12-3) Adjustment 12.1.5 REW Sole.noid 1. Put the deck into rewind mode. 2. Loosen screw ) and 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 tull assembly.(See Fig. 12-3).
12.1.2 Reel BaseTorque Adiustment 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 measured values lie outside these ranges, replace the supply reel assembly (parb no. RXB-714), take-up reel assembly (part no. RXB-715) or the drive arm full assembly (part no. RXB-376). Table1
TU reel base ass'y Playback mode Farst forward mode Rewind mode 36 - 6Og.cm 85 - 125g.cm * 2 - Sg.cm Supply reel base ass'y 2 - Sg.cm 2 - Sg.cm
85 - 125s.cm
NOTE: * denotes bach tension torque.
30
Boss(Drivingarm full assemblyl REW position FF position
Contacting
=L Contacting
l d l e rgear
TU reel base assembly l d l e rg e a r I
FF Mode
HiKq
Supply reelbase assembly ( r F F F s o l e n o i d p l u n g es o l e n o i d )
D#
Drivegear assembly Supplyreelbase ( 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 l
adjustment Fig. 12-3 FF and REWsolenoid
12.2 ELECTRICAL ADJUSTMENT o Check the following points before starting any electrical adjustments. 1. All mechanical adjustments must be completed. 2. Clean the heads and demagnetize the erase head. 3. Level measurements are based on OdBv : 1V. Connect a 50kQ dummy resistor (47k- 52kO) 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 Adjustment 1. DOLBY NR level. 2. Head azimuth 3. Playback level 4. Playback equalization check 5. Level meter check 6. Record/playback frequency response 7. Recording level
LEVEL(dB)
STD-341A STD-608A STD-603 STD604
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
so.ec
1 OOsec
Fis.12-4
STD-341Atest tape
VR201-{: ( P BL E V E LR )
vnrol
\
@ ( P B E V E L@ L} L
vR102-------@ ( R E cL E V E L L @ J L vR202'
( R E CL E V E LR )
Fig. 12-5 Adlustment.points
32
12.2.1 DOLBY NR LevelAdjustment
Settings AC mV meter
Input signal Tape selector . . Mode
.. Connect to DOL L (L ch) and DOL R (R ch) - 10dBv (316mV) to 2kHz, LINE INPUT NORM Record
_pr
Erase head Head azimuth adjustment screw REC/PB head
Fig.12-8 Head azimuth adjustment 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 Adjustment Since this adjustment determines the DOLBY NR level during playback, it should be performed precisely. Settings AC mV meter Test tape Tapeselector.. Mode . . Connect to DOL L (Lch) and DOL R (R ch) STD-341A (333H2, OdB) NORM . .. Playback
?NAZ -l &8v (3rtuv )
DOL L (Lch) DOL R (R ch)
-3ftav (31 6nv)
I
Fig.12-6 DOLBY level NR adjustment
Procedure 1. A
3. Adjust VR401 so that the meter reads- 17.9 dBv (127mV). 12.2.2 HeadAzimuth Adjustment
. . Connect to OUTPUT terminals Test tape STD-341A (10kHz, - 20dB) Tapeselector.. NORM Mode . .. Playback VR101 and VR201 . . .Turn clo.ckwise to maximum posrlron Settings AC mV meter
oN.
-l
J3
Procedure
D( D(
I
^
1.2dBv(0.87V)
@
Fig. 12-9 Playback leveladjustment
Adjust VR10L (L ch) and VR201 (R ch) so that the meter reads - 1.2dBv (0.87V).
Fig. 12-7
Headazimuthadjustment
Check Equalization 12.2.4 Playback
Settings AC mV meter Test tape Tape selector . . Mode Connect to OUTPUT terminals STD-341A (333H2, - 20dB) (6.4kH2, - 20dB) NORM Playback
12.2.5 LevelMeterCheck
Settings AC mV meter Inputsignal Mode . . Connect to DOL L (L ch) and DOL R (R ch) ... 333H2, -10dBv (316mV) to INPUT terminals ... Record
f ""*^
JJ
-l tsrm rr. -zme O@l I
oolT;-,ml
DOL L (L ch) DOL R (R chl
@ @ 6effi
o0
6M
meter check Fig.12-11 Level Procedure Adjust the INPUT level control so that the meter reads - 5.2dBv (0.54V), and check that the level meter segments light up in a OdBt 1 segment range.
equalization check Fig.12-10Playback 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, -20dB portion again, and check that the meter reading lies within -2.5t1dB of the reading obtained in step 3.
12.2.6 Record/Playback Frequency 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,
Playback Frequency Response Test tape STD-341A T a p e s e l e c t o.r. . . . . . NORM DolbyNR switch . . . . .OFF
NOTE: Due to "edge effect", compensate the right channel by -O.idB at 125H2 and - ldB at 63H2.
sTD-604)
NORM (CrO2, METAL) ... Record
td8
-T
5da
3d8 _-_.lL 6.lkHr lOtH.
Overall Frequency Response Testtape Tapeselector ... DOLBYNRswitch
.. STD-608A . NORM ..... OFF
o
333H2 3ftBv {3l.6mV 6 3kHz 3ftav (3l.6mV) 63H! 333H! 6.3kH! 12kHr
o
Testtape Tapeselector .. DOLBYNRswitch
.. STD-608A .. NORM ..... ON
\/
5d8 B 3kBz revel 333H2 rever +0 5dB
|0" ?da
4dl
v
r 2 5H t 3 3 3H r
4lHr
Fig. 12-12 Record/playback frequencyresponse adjustment Procedure 1. Adjust the INPUT level control meter reads 27dBv (44.6mV). so that the
Testtape Tapeselector.. DOLBYNRswitch
.. STD-603 .. CrO2 ..... OFF
- 30dBv signals, and adjust VR301 (L ch) and VR302 (R ch) so that the difference in the playback output signal level with the 333H2 level as the reference level is +0.5dB. 3 . Change the tape selector and DOLBY NR switch positions (See Fig. L2-L3,14), and check that the frequency response is satisfactory.
2 . Record the 333H2, - 30dBv and 6.3kHz,
3 3 3H z
F i g .1 2 - 1 3 F r e q u e n cr e s p o n s e y
35
Equalization 12.2.4 Playback Check
Settings
12.2.5 LevelMeterCheck
Settings
AC mV meter Test tape Tape selector . . Mode
Connect to OUTPUT terminals STD-341A(333H2, -20dB) (6.4kH2, -20dB) NORM Playback
AC mV meter Input signal Mode
Connect to DOL L (L ch) and DOL R (R ch) 333H2, - 10dBv (316mV) to INPUT terminals Record
J3
--l t-sro-ts r*, -roeI O@l
33&z ltuBv (3l5mVl
o@F*-ml
DOL L lLch) DOL R (R ch)
@ @ 6 3kHz lever
333H2 evel 333H2 level
+1 5, 2.5rld
oo
6 3kH2 reve
FiS.12-11 Level meter check Procedure Adjust the INPUT level control so that the meter reads - 5.2dBv (0.54V), and check that the level meter segments light up in a 0dB11 segment range.
Fig.12-1O Playback equalization check Procedure 1. Play the 333H2, -20d8 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, - 20dB portion again, and record the meter reading. 4. Then play the 6.3kHz, -20dB portion again, and check that the meter reading lies within -2.5t1dB of the reading obtained in step 3.
TL
34
