SANSUI X701 STEREO CASSETTE DECK CAUTION SERVICE MANUAL NOTE For servicing D-X701, please refer to service manual forthe D-705 with this manual, since most ofthe parts and circuits employed in D-X701 are in common with the D-705. 1. Parts identified bythe A\symbol on the schematic diagram and the parts list are critical for safety. Use only replacement parts that have critical characteristics recommended bythe manufacturer. 2. Make leakage-current or resistance measurements todetermine that exposed parts are acceptably insulated from the supply circuit before returning the appliance to the customer. ba °SPECIFICATIONS Track format............0:6 4-track/2-channel system Tape speed............ceeee 4.8 cm/sec. Heads (3-head configuration) Play head s.scssisseacssese HIGH-Bs hard permalloy Recording head..........HIGH-Bs hard permalloy Erase head.........ccseeeeee Double-gap HIGH-Bs ferrite MOOR os ccs iovccntiseeaationesess Capstan: Electronically Controlled DC Motor : Reels: DC Motor Wow/flutter ........Drosteeacns 0.035% max (WRMS) Fast forwarding (rewinding) time Approx. 85 sec. (for C-60 tape) Frequency response (—20 VU recording/playback) Normal tape (LH) .......20 to 18,000 Hz (30 to 17,000 Hz +3 dB) Came neneseccererseresesssosseseses Chrome tape ..............20 to 20,000 Hz (30 to 18,000 Hz +3 dB) Metal tape..............ee 20 to 21,000 Hz (30 to 20,000 Hz +3 dB) Signal-to-noise ratio (recording/playback with metal tape) DOLBY NR OFF .........Better than 60 dB DOLBY-B NR ON.......Better than 68 dB DOLBY-C NR ON.......Better than 74 dB Erasure rate (metal tape) Sououbeaticstassule aurea Gans More than 70 dB at 1 kHi Recording bias frequency icine Au atao cence nnavasewasiues 105 kHz Input sensitivity/Impedance LINE: IN (REG) cc cexcua tees 70 mV/47 kohms Power requiremets..........120/220/240V 50/60 Hz For U.S.A. and Canada Aorietlesipiadeuneuctennins 120V (60 Hz) Power consumption ........30 watts Dimensions ..................68. 448 mm (17-11/16”) W 111 mm (4-3/8”) H 310 mm (12-1/4”) D Welghtica cients 6.0 kg(13.2 Ibs) net 7.3 kg (16.1 Ibs) packed * Design and specifications subject to changes without notice fo jsn- provements. * Dolby noise reduction system manufactured under license'from |p|&y Laboratories Licensing Corporation. . ‘‘Dolby”’ and the double Dsymbol are trade marks ofDolby Laboraprs es Licensing Corporation. 74
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SANSUI
X701 STEREO CASSETTE DECK
CAUTION
SERVICE MANUAL
NOTE For servicing D-X701, please refer to service manual for the D-705 with this manual, since most of the parts and circuits employed in D-X701 are in common with the D-705.
1. Parts identified by the A\ symbol on the schematic diagram and the parts list are
critical for safety. Use only replacement parts that have critical characteristics recommended by the manufacturer.
2. Make leakage-current or resistance measurements to determine that exposed parts are acceptably insulated from the supply circuit before returning the appliance to the customer.
MOOR os ccs iovccntiseeaationesess Capstan: Electronically Controlled DC Motor
: Reels: DC Motor
Wow/flutter ........ Drosteeacns 0.035% max (WRMS)
Fast forwarding (rewinding) time Approx. 85 sec. (for C-60 tape)
Frequency response (—20 VU recording/playback) Normal tape (LH) ....... 20 to 18,000 Hz
(30 to 17,000 Hz +3 dB)
Came neneseccererseresesssosseseses
Chrome tape .............. 20 to 20,000 Hz (30 to 18,000 Hz +3 dB)
Metal tape..............ee 20 to 21,000 Hz (30 to 20,000 Hz +3 dB)
Signal-to-noise ratio (recording/playback with metal tape) DOLBY NR OFF ......... Better than 60 dB DOLBY-B NR ON....... Better than 68 dB DOLBY-C NR ON....... Better than 74 dB
Erasure rate (metal tape) Sououbeaticstassule aurea Gans More than 70 dB at 1 kHi
Recording bias frequency icine Au atao cence nnavasewasiues 105 kHz
Input sensitivity/Impedance LINE: IN (REG) cc cexcua tees 70 mV/47 kohms
Power requiremets.......... 120/220/240V 50/60 Hz
For U.S.A. and Canada
Aorietlesipiadeuneuctennins 120V (60 Hz)
Power consumption ........ 30 watts Dimensions ..................68. 448 mm (17-11/16”) W
111 mm (4-3/8”) H
310 mm (12-1/4”) D Welghtica cients 6.0 kg (13.2 Ibs) net
7.3 kg (16.1 Ibs) packed
* Design and specifications subject to changes without notice fo jsn- provements.
* Dolby noise reduction system manufactured under license'from |p| &y
Laboratories Licensing Corporation. .
‘‘Dolby”’ and the double D symbol are trade marks of Dolby Laboraprs es Licensing Corporation. 74
D-X701
1. The symbols, UL, CSA, SA, BS, UK, EU, AS, SEV, SS and XX <EXPORT> on the parts list and the schematic dia-
gram mean followings respectively.
i cacassreeetenieess Manufactured for U.S.A market. (Underwriters Laboratories approved model.) |
CSA causes Manufactured for Canadian market.
SAio 2s cicwaeaceereee Manufactured for South African market.
BS. UK vate ageetase: Manufactured for United Kingdom market.
EU ccinsenesnsewetins Manufactured for European market.
AS i eeaensen Manufactured for Australian market.
SEV......cccccccccesees Manufactured for Swiss market.
SS veiciercenetecve Manufactured for Saudi Arabia market.
XX <EXPORT> .. Standard Version.
NON MARK........ Common Parts.
. Some printed circuit boards are not supplied assembled.
To separate these in this service manual, the stock num-
bers are not indicated for these boards. However, stock
numbers for individual parts are indicated.
. Since some capacitors and resistors are omitted from parts
lists in this service manual, refer to the Common Parts List for capacitors and resistors, which was issued on June
1987.
NOTE 1. For block diagram, description of ICs and operation
NOTE
4. Abbreviations in this service manual are as follows.
eAbbreviations List C.R. : Carbon Resistor
S.R. : Solid Resistor
Ce.R. : Cement Resistor
M.R. : Metal Film Resistor
F.R. : Fusing Resistor
N.I.R. : Non-inflammable Resistor
A.R. — : Array Resistor
C.C. : Ceramic Capacitor
C.T. : Ceramic Capacitor, Temperature
Compensation :
E.C. : Electrolytic Capacitor
EL. : Low Leak Electrolytic Capacitor
E.B. _: Bi-Polar Electrolytic Capacitor
E.B.L. : Low Leak Bi-Polar Electrolytic
Capacitor
Ta.C. : Tantalum Capacitor
F.C. : Film Capacitor
M.P. : Metalized Paper Capacitor
P.C. : Polystyrene Capacitor
G.C. : Gimmic Capacitor
A.C. : Array Capacitor
V.R. : Variable Resistor
S.V.R. : Semi Variable Resistor
SW. : Switch
Chip R.: Chip Resistor
Chip C. : Chip Capacitor
of mechanism, refer to the D-705 Service Manual. 2. On the parts list, the changed parts are specified
by “#" mark.
1.PACKING LIST Parts No. Stock No. Description
1 47859100 Vinyl Bag #2 27130110 Styrofoam Packing #3 27488400 Carton Case
2. ACCESSORY LIST Stock No. Description
07193400 PJP Cord or 38103300 PJP Cord
# 49033200 D-X701/X501 Operating Instruc-
tion (*E*FeS)
# ~ 49033300 D-X701/X501 Operating Instruc-
tion (*G-l-Sw)
*Note
E-FeS: EnglisheFrench and Spanish Version
GeleSw: Germaneltalian and Swedish Version
Sa m
a
——
a, °
Bie cir pic
R ww
3. ADJUSTMENTS 3-1. Tape Speed Adjustment
Note: 1. Use Sansui Test Tape, SCT-S3K (3 kHz signal is Fig. 3-1 eae
recorded on the tape). «CASSETTE DECK FREQUENCY COUNTES
=H o000 Connections are shown in Fig. 3-1. . Remove the cassette lid. _ Set the MONITOR Switch to TAPE.
Set the OUTPUT volume to MAX position.
STEP SUBJECT MEASURE OUTPUT SETTING ADJUSTMENT ADJUST FOR | REMARKS
1. | Tape Speed LINE OUT Frequency _._| Playback the TEST | Turn semi-variable resistor 3000Hz+45Hz | Use small screw driver
Note: 1. Before this adjustment, clean REC/P.B. head surface. 4. Set the MONITOR switch to TAPE.
2. For this adjustment, use Sansui Test Tape, SCT-F1OK, 5. Set the OUTPUT volume to MAX position.
and SCT-L400. 6. Connections are shown in Fig. 3-3.
3. Set the Dolby NR switch to OFF.
Fig. 3-3 Fig. 3-4 REC/P.B Head
CASSETTE DECK
Azimuth Adjusting Screw
STEP SUBJECT MEASURE OUTPUT SETTING ADJUSTMENT ADJUST FOR REMARKS
REC/P.B. LINE OUT VTVM Playback the TEST | Adjust the azimuth adjust- MAX. Output Arter this adjustment, lock the screw
Head Adj. and Scope TAPE SCT-F10K ing screw in Fig. 3-4. both channels with. paint. 1S
2. | Playback Level | Between Point @ (L-CH)/ | Playback the TEST Adjust each vVR4 (L-CH 10mV + 2dB See F-5557 Parts Location on page 3.
Pre Adj. Point @ (R-CH) and TAPE SCT-L400 and R-CH, F-5328) Aciust this step, when replacing vVR4
GND, VTVM and Scope (2x2 S.V.R.) on F-5328 board.
o: Playback Level | LINE OUT VTVM Playback the TEST | Adjust each xVR1 (L-CH 500mV + 2dB
Adj. and Scope TAPE SCT-L400 and R-ch, F-5557)
3-3. REC Level & Frequency Response Adjustment
Note: 1. Set the MONITOR switch to TAPE.
2. Set the BIAS volume to the mechanical center
position. "
. Set the Dolby NR switch to OFF. OFA B +0 ie Line °
Set the OUTPUT volume to MAX position. : pit Ua
Set the REC LEVEL volume to MAX position.
-Connections are shown in Fig. 3-5. : |
STEP| suBjJECT | INPUT SIGNAL | “AESOn IE SETTING ADJUSTMENT
Te REC Level Feed 1kHz from LINE OUT, Load the TEST TAPE SCT-SA. 1. Adjust v\R6 (L-CH and R-CH, F-5328) until
Adj. Audio S.G. into VTVM and 1. Push the PAUSE, and REC knob. output level 200mV +2dB on_ both chan-
LINE IN. Scope 2. Adjust the output level of Audio SG. for obtaining nels are obtained.
200mV on VIVM. 3. Push the PAUSE knob, then record the 1kHz sig
Fig. 3-5 OSCILLOSCOPE
CASSETTE DECK Audio OSC
Hm hb Ww
nal.
1. Adjust vWR7 (L-CH and R-CH, F-5328) until 2. | Frequency | Feed 1kHz 10mV Load the TEST TAPE SCT-SA.
Response and 10kHz 10mV, 1. Record the 1kHz and 10kHz signals. 1kHz ang 10kHz output levels will be
Adj. from Audio S.G. equal.
into LINE IN.
3. | METAL REC | Feed 1kHz from LINE OUT, | Load the TEST TAPE SCT-MA. 1. Adjust vWRS (L-CH and R-CH, F-5328) until
Level Adj. Audio S.G. into VTVM and 1. Push the PAUSE, and REC knob. output level 200mV +2dB on_ both chan-
LINE IN. Scope 2. Adjust the output level of Audio SG. for obtaining nels are obtained.
200mV on VTVM. 3. Push the PAUSE knob, then record the 1kHz sig nal.
3-4. Peak Level Indicator Adjustment
Note: 1. Set the OUTPUT volume to MAX position.
2 Connections are shown in Fig. 3-6.
3. Remove the F-5338 board Lee
Fig. 3-6 Audio OSC CASSETTE DECK
LINE ~ OUT,
aso oo ° ’ LINE , iN
ADJUSTMEN] MEASURE SUBJECT INPUT SIGNAL OUTPUT SETTING
Peak Level | Feed 1kHz, LINE OUT, | Load the TEST TAPE SCT-SA. 1. Light the UdB point on levelirs dicator to ad-
Indicator 100mV from $.G. | VTVM and 1. Push on PAUSE, and REC knob. just nVRI (F-5338).
Adjustment | into LINE IN. Scope 2. Adjust the REC LEVEL knob for obtaining 500mV on | 2. Adjust tne REC LEVEL knobio obtaining 490mV on VTVM, then corre the 0dB point on .evel‘indicator go wt -
3. If not, acust nVRI, until SET BNG 1 ~ADJLS™MENT 2 will be otcin:
VTVM.
4. PARTS LOCATION ON BOARD * For parts location on boards F-5328, F-5332, F-5334, F-5338, F-5339, F-5343, F-5344, F-5348 and F-5349, refer to D-705 Service Manual.
4-1. F-5556 Noise Reduction (Rec) Board 4-2. F-5557 Noise Reduction (Playback) Board Component Side Component Side