TEAC MCDX-33 Service manual

MC-DX33

Micro Hi-Fi system

NOTES CONTENTS

PC board shown are viewed from parts side.

The parts with no reference number or no parts number

in the exploded views are not supplied.

As regards the resistors and capacitors, refer to the

circuit diagrams contained in this manual.

!

Parts marked with this sign are safety critical

components. they must be replaced with identical

components - refer to the appropriate parts list and

ensure exact replacement.

1 SAFETY INFORMATION ... .... ... ... .... ... ... .... ... ... .... ... ... .... ... ... ... 2

2 SPECIFICATIONS ... ... .... ... ... .... ... ... .... ... ... .... ... ... .... ... ... .... ... ... .... .. 3

3 ADJUSTMENT AND CHECK ... ... ... .... ... ... .... ... ... .... ... ... .... ... 4

4 EXPLODED VIEW AND PARTS LIST ... .... ... ... .... ... ... .... 6

5 PC BOARDS AND PARTS LIST .. ... ... .... ... ... .... ... ... .... ... .. 11

6 WIRING DIAGRAM ... ... ... .... ... ... .... ... ... .... ... ... .... ... ... .... ... ... .... ... . 24

7 INCLUDED ACCESSORIES .... ... ... .... ... ... .... ... ... .... ... ... .... ... 27

MC-DX33

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NO T REMOVE COV E R (O R B A C K ) . NO US E R ­SE RVIC EABLE PARTS I NSID E. REF ER SERVIC ING TO
QUALIFIED SERVICE PERSONNEL.

The lightning flash with arrowhead symbol, within
an equilateral triangle, is intended to alert the user
to the presence of uninsulated “dangerous voltage”
within the product’s enclosure that may be of sufficient
magnitude to constitute a risk of electric shock to
persons.

The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in
the literature accompanying the appliance.

1 SAFETY INFORMATION

Optical pickup :

Type : DA23Z1

Manufacturer : SANYO ELECTRIC CO.,LTD.

2

Laser output : Less than 0.5mW on the objective lens

Wavelength : 760-800nm

2 SPECIFICATIONS

MC-DX33

Amplifier Section

Output Power (L+R) 5 W + 5 W
Output Power (Subwoofer) 15 W
Input Sensitivity 300 mV
Frequency Response 50 to 20,000 Hz
TUNER Section (FM)
Frequency Range 87.50 to 108.00 MHz
Sensitivity (S/N30dB) 20 dBμV/m
TUNER Section (AM)
Frequency Range 522 to 1,620 kHz
Sensitivity (S/N20dB) 54 dBμV/m

CD PLAYER Section

Frequency Response 20 to 20,000 Hz (±1 dB)
Signal-to-Noise Ratio 55 dB
Wow and Flutter Unmeasurable

SPEAKER

Type Full range flat type
Impedance 4 ohms

SUBWOOFER

Impedance 8 ohms

GENERAL

Power Requirements 230 V AC, 50 Hz
Power Consumption 60 W
Standby Power Consumption: 2.5 W
Dimension (W x H x D)
Main Unit 255 x 169.5 x 84 mm
L & R Speakers 210 x 169.5 x 81 mm
Subwoofer 160 x 245 x 335 mm
Weight (Net)
Main Unit 1.3 kg
L & R Speakers 0.7 kg each
Subwoofer 5.3 kg

Standard Accessories

Remote control unit (RC-1174) x 1
Battery for remote control unit x 1
Subwoofer cable x 1
Speaker cable x 2
FM antenna x 1
AM antenna x 1
Stereo mini plug cable x 1
Wall mount brackets x 4
Screw (short) x 8
Screw (long) x 4
Tapered plastic wall anchor x 4
Guide sheet for wall mounting x 2
Owner’s manual x 1
Quick guide for connection x 1
Warranty card x 1

Design and specifications are subject to change without notice.
Weight and dimensions are approximate.
Illustrations may differ slightly from production models.

3

MC-DX33

3 ADJUSTMENTS AND CHECKS

ALIGNMENT PROCEDURES

AM I.F. ALIGNMENT

1. Set the POWER BUTTON to POWER "ON".

2. Set the Radio and band button to Radio and AM BAND.

3. Connect a SWEEPSCOPE OUTPUT to AM antenna terminal.

4. Connect a SWEEPSCOPE INPUT to pin17 of IC2 through a 1uf capacitor and ground.

STEP SET SIGNAL SET DIAL ADJUST ADJUST FOR

1 450KHz GANG OPEN T203(AM IF)

AM R.F. ALIGNMENT

1. Connect an RF generator to a standard radiating loop.

2. Connect a SCOPE and VTVM across the speaker output.

STEP SET SIGNAL SET DIAL ADJUST ADJUST FOR
1 522KHz GANG CLOSED T206 (AM OSC COIL)
2 600KHz 600KHz T204 (AM SENS COIL)
3 1400KHz 1400KHz SVC202 (AM SENS TRIM.)
4 REPEAT STEPS 3 AND 4 TO OBTAIN BEST TRACKING.

CENTER
&MAXIMUM OUTPUT

MAXIMUM
OUTPUT

FM I.F. ALIGNMENT

1. Set the POWER BUTTON to POWER "ON".

2. Set the TUNER/BAND Switch to FM position.

3. Connect a SWEEPSCOPE OUTPUT to pin 7 of IC1 through a 20pF capacitor and ground.

4. Connect a SWEEPSCOPE INPUT to pin18 of IC2 through a 1uf capacitor and ground.

STEP SET SIGNAL SET DIAL ADJUST ADJUST FOR

1 10.7MHz GAND OPEN IFT

WITH 10.7MHz AT
ZERO CROSSOVER

FM R.F. ALIGNMENT

1. Connect an RF generator to the FM antenna terminal and ground.

2. Connect a SCOPE & VTVM across the speaker output.

STEP SET SIGNAL SET DIAL ADJUST ADJUST FOR
1 87.5MHz GANG CLOSED L2
2 90MHz 90MHz L5
3 106MHz 106MHz L3

MAXIMUM
OUTPUT

4

CD ALIGNMENT

Auto alignment.

MC-DX33

5

MC-DX33

4 EXPLODED VIEWS AND PARTS LIST

6

MC-DX33

EXPLODED VIEW

PARTS LIST

REF.NO PARTS NO. DESCRIPTION REMARK

1-1 56-04DX2200B070 FRONT CABINET (BLK)

56-04DX2200A0 40 FRONT CABINET (SILVER)

1-2 56-05DX2200B010 REAR CABINET (BLK)

56-05DX2200A0 10 REAR CABINET (SILVER)

1-3 56-07DX3300B010 VOLUME BOTTOM HOLDER (BLK)

56-07DX3300A0 00 VOLUME B OTTOM HOLDE R (SILVER)

1-4 56-07DX3302B010 VOLUME COVER -R (BLK)

56-07DX3300A0 10 VOLUME C OVER -R (SILVER)

1-5 56-07DX22039000 CD D ESK BKT

1-6 56-07DX2214B000 REMOTE BKT (BLK)

56-07DX221080 00 REMOTE BKT (SILVER)

1-7 56-07DX2215B000 SHOCK ABSORBER BRACKET (BLK)

56-07DX22118000 SHOCK ABSORBER B RACKET (SILVER )

1-8 56-14DX2200B010 CD DOOR (BLK)

56-14DX2200A0 10 CD DOOR (SILVER)

1-9 61-68CD10100020 CD ALUM COVER

1-10 56-22DX2211B000 LED LEW CO VER (BLK)

56-22DX221080 00 LED LEW COVER (SILVER)

1-11 56-22DX2212B000 PROTECT COVER (BLK)

56-22DX2210A0 00 PROTECT COVER (SILVER)

1-12 56-24DX01500000 CD DOOR GEAR

1-13 56-24DX01510000 STRAP GEAR

1-14 56-54DX2210B000 FUNCTION KNOB G ROUP-1 (BLK)

56-54DX2210A0 00 FUNCTION KNOB GROUP-1 (SILVER)

1-15 56-54DX2211B010 FUNCTION K NOB GROUP-2 (BLK)

56-54DX2211A010 FUNCTION KNOB GROUP-2 (SILVER)

1-16 56-54DX2211B000 PLAY KNOB GRUP (BLK)

56-54DX2212A0 00 PLAY KNOB GRUP (SILVER)

1-17 56-07DX3301B000 VOLUME BOTTOM HOLDER PLATE (BLK)

56-07DX3301A0 00 VOLUME BOTTOM HOLDER PLATE (SILVER)

1-18 56-57DX22100000 CD DOOR LENS

1-19 56-57DX22010000 BLACKLIGHT LENS

1-20 56-57DX22022000 REMOTE LENS

1-21 56-57DX22030010 DISPLAY LENS

1-22 56-07DX3303B010 VOLUME COVER-L (BLK)

56-07DX3301A0 10 VOLUME COVER- L (SILVER)

1-23 56-67DX22009000 PCB BRACKET

1-24 56-78DX22009000 SHINE RING

1-25 56-78DX2200G000 CD DOOR RING

1-26 45-114200500062 AC CORD UDE APP 2M (M.T) (BLK)

1-27 56-78CDX092G000 CHROME RING -SUBW OOFER BOX

1-28 61-30DX22100020 KNOB COVER

1-29 05-DX33S0100000 PCBA-MAIN

1-30 05-DX33S0200000 PCBA-TUNER

1-31 05-DX33S0400000 PCBA-DISPLAY

1-32 56-07DX22029000 BACKLIGHT BKT

1-33 57-26DX22000020 FILTER SHEET 76X37.5X0.3MM

1-34 66-140326180321 SELF-TAPPING SCREW TA/PH 2.6X8MM

1-35 05-DX33S1900000 PCBA-VOLUME

1-36 05-DX33S0900000 PCBA-HP

7

MC-DX33

EXPLODED VIEW

PARTS LIST

REF.NO PARTS NO. DESCRIPTION REMARK

1-37 05-DX33S2700000 PCBA-SENSOR

1-38 05-DX33S3000000 PCBA-CD

1-39 20-70DA23Z10000 CD MECHANISM (SANYO) DA23Z1

1-40 56-760000000020 DOOR MOTOR PULLY

1-41 66-141430216121 SCREW TA/BWH 3X16MM(HEAD 10MM) (BLK)

1-42 58-26DX22000020 RUBBER FOOT39X9X3MM

1-43 58-26DX22010020 RUBBER RING DIA 5. 4X3X0.8MM

1-44 58-43DX01500020 DRIVE BELT DIA31X1MM

1-45 58-44CD10100020 DC MOTOR 5V

1-46 58-61EX0M108120 SHOCK ABSORBER (GREY)

1-47 58-61MC23500020 SHOCK ABSORBER (GREY)

1-48 58-61MC23500120 SHOCK ABSORBER (BLACK)

1-49 19-50DX22010220 SPEAKER BOX UNIT-L

1-50 19-50DX22010320 SPEAKER BOX UNIT-R

1-51 56-58EXM5M0A000 LOGO BADGE

1-52 61-11CDX0900020 DS MTEA L PLATE

1-53 18-205DX0150120 H/TRANS FORMER EI66 230V/50Hz TG0000700

1-54 05-DX33S0700000 PCBA-SSUB. POWE R

1-55 61-48DX01500020 HEATSINK A

1-56 05-DX33S0800000 PCBA-RCA/D-S JA CK

1-57 19-021153300120 SPEAKER 5.25'' 8OHM 30W

1-58 41-172111000310 SWITCH, POWER

1-59 43-500000002020 AC CORD BUSHING

1-60 56-22CDX0908000 PCB COVER

1-61 56-57CDX0936000 LIGHT LENS -SUBWOOFER BOX

1-62 56-78CD1010B000 SAFEGUARD RING/SUB

1-63 56-85CDX090B010 SUBWOOF ER PANEL (BLK)

56-85CDX090A0 20 SUBWOOFER PANEL (SILVER)

1-64 56-87CDX0908000 PLASTIC TUBE

1-65 58-263253150020 RUBBER FOOT

1-66 58-73DX01500121 SUBWOOFER BOX

1-67 61-11V600000020 PCB BRACKET

1-68 61-11V820010020 PCB FIX BRACKET

1-69 61-11DX01500321 MOTOR BRACKET

1-70 61-33DX33S00021 SUB.REAR PANEL

1-71 61-11DX22000122 WEIGHT STEEL 1 159X67.5X4MM

1-72 61-11DX22000222 WEIGHT STEEL 1 159X67.5X2MM

1-73 61-80DX01500020 FERRUM SHAFT 155X3MM

1-74 05-DX33S1300000 PCBA-RC "MCDX33 S"

1-75 51-021301000080 LITHIUM BATTERY

1-76 56-43DX0150A010 REMOTE FRONT CABINET (SILVER)

1-77 56-43DX0151B010 REMOTE REAR CABIN ET (BLK)

1-78 56-44DX0150B010 REMOTE BATTERY DOOR (BLK)

1-79 57-33DX33S00020 REMOTE PLATE RC-1174 (SILVER)

1-80 61-11DX01500220 REMOTE AGGRAVATE FERR UM

1-81 61-25DX01500021 BATTERY PL ATE (+)

1-82 61-25DX01500120 BATTERY PL ATE (-)

1-83 66-140520170121 SELF-TAPPING SCREW TA/KH 2X7MM(BLK)

1-84 58-58DX01500320 CUSHION (EVA) 106x40x1MM

1-85 67-021400000020 NUT M4MM

1-86 68-112403101000 METAL WASHER 4X10X1MM

8

MC-DX33

EXPLODED VIEW

PARTS LIST

REF.NO PARTS NO. DESCRIPTION REMARK

1-87 66-120230160121 MACHINE SCREW MS/BH 3X6MM ( BLK)

1-88 66-120240212121 MACHINE SCREW MS/BH 4x12MM (BLK)

1-89 66-140230210321 SELF-TAPPING SCREW TA/BH 3X10MM

1-90 66-140230212121 SELF-TAPPING SCREW TA/BH 3X12MM (BLK)

1-91 66-140230214121 SELF-TAPPING SCREW TA/BH 3X14MM (BLK)

1-92 66-120330160121 MACHINE SCREW MS/BH 3X6mm ( BLK)

66-1203301603 21 MACHINE SCREW MS/BH 3X6mm (SLV)

1-93 66-141430214121 SCREW TA/BWH 4X14MM(HEAD 10MM) (BLK)

1-94 66-150230180123 HARDEN SCREW BTTB 3X8MM AB (BLK)

1-95 66-120526210321 MACHINE SCREW MS/KH 2.6X10m m (H:5mm)

1-96 66-140220150121 SELF-TAPPING SCREW TA/BH 2X5MM (BLK)

1-97 66-140226212311 SELF-TAPPING SCREW TA/BH 2.6X12M M (BLK)

66-1402262123 21 SELF-TAPPING SCREW TA/BH 2.6x12mm (SLV)

1-98 66-140230180321 SELF-TAPPING SCREW TA/BH 3X8MM

1-99 66-140330180321 SELF-TAPPING SCREW TA/PH 3X8MM

1-100 66-140330210321 SELF-TAPPING SCREW TA/PH 3X10MM

1-101 66-140330212321 SELF-TAPPING SCREW TA/PH 3X12MM

1-102 66-140330212121 SELF-TAPPING SCR EW TA/PH 3X12MM (BLK)

66-1403302143 21 SELF-TAPPING SCREW TA/PH 3X13MM ( SLV)

1-103 66-140526180311 SE LF-TAPPING SCREW TA/KH 2.6X8MM

1-104 66-140526180321 SELF-TAPPING SCREW TA/KH 2.6X8MM (4KA BLK)

66-1402261803 21 SELF-TAPPING SCREW TA/BH 2.6x8mm (4KA SLV)

1-105 66-140523212121 SELF-TAPPING SCREW TA/KH 3X12MM (BLK)

66-1405302123 21 SELF-TAPPING SCREW TA/KH 3X12MM (SLV)

1-106 66-150530210121 SELF-TAPPING SCREW TB/KH 3X10MM (BLK)

66-1505302103 21 SELF-TAPPING SCREW TB/KH 3X10MM (SLV)

1-107 57-08DX01500020 CD DOOR PVC PLATE

1-108 66-140230210121 SELF-TAPPING SCREW TA/BH 3X10MM(BLK)

1-109 SWITCH PCB 2 ASSY CLOSE............................... ..... Included in REF. NO. 1-38 PCBA -CD,

Refer to page 12/14/15

1-110 SWITCH PCB 1 ASSY OPEN................................ ...... In cluded in REF. NO. 1-38 P CBA-CD,

Refer to page 12/14/15

1-111 LED PCB ASSY............................... ............................ Refer to page 20/21

1-112 05-DX33S03 00000 PCBA-STANDBY

9

MC-DX33

MAIN PCB

10

MC-DX33

5 PC BOARDS AND PARTS LIST

MAIN PCB ASSY

REF.NO PARTS NO. DESCRIPTION REMARKS

05-DX33S0100000 MAIN PCBA
48-01DX33B00220 MAIN PCB 94HB 137x92x1.6mm
CN1,2 43-0222 00130120 WAFER 2mm 3P 90C
CN203 43-02225 0120221 WAFER 2.5mm 2P 90C (BLACK)
CN204 44-53531 6052520 2P RAINBOW WI RE 160mm HSG+TML(2) AA

CN207 44-55526 0052621 2P COAXIAL CABLE L=60mm HSG+TM L(2) AA
CN501,502 43-02220 0130120 WAFER 2mm 3P 90C
CN504 43-02220 0140120 WAFER 2mm 4P 90C
CN508 43-02220 0170120 WAFER 2mm 7P 90C
CN511 43-022150212120 WAFER 12P 1.5mm 9 0C

CN-DC 43-46210 3003321 D-S TERMINAL #DSW-31 R1
D701,702,703,70 4 12-RL2020000021 RECTIFIER DIODE RL-202 2A 100V
D708 12-1N40010000P1 RECTIFIER DIODE 1N4001 (T=52mm)
D400,705 12-1N4148000125 DIODE 1N4148 (T=52mm)

D603 12-SS1400000025 SMD DIODE SS14 SMA/DO-214AC
D601 12-1N5819000021 RECTIFI ER DIODE 1N5819
IC101 16-GY6550000021 MCU GY655 GENNY (80PIN QFP80)
IC501 16-LC7534200021 IC (SANYO) LC75342-E DIP30SD
IC703 16-SC1308000021 IC (LIBERAL) SC1308-01

L401,402,405 38-013100050120 AXIAL INDUCTOR 10UH +-10% 350mA EC-24
L403 32-031351600025 FERRITE BEAD 3.5x6x0.8TB (TAPING)
L404,406 38-013100050120 AXIAL IN DUCTOR 10UH +-10% 350mA EC-24
JK201 43-4210 00003210 COAXIAL JACK IF-01 A
Q401,Q716 11-8050C000 0025 TRANSISTORS 2W 8050C (TAPING)

Q405,406 11-MMBT39040221 SMD TRANSISTORS MMBT3904 SOT23
Q501 11-MMBT39040221 SMD TRANSIS TORS MMBT39 04 SOT23
Q502 11-MMBT39040221 SMD TRANSIS TORS MMBT39 04 SOT23
Q701,707 11-9015C0000021 PNP TRANSISTORS 9015C
Q703 16-KA7808000221 IC (SAMSUNG) KA7808E ( TO-220)

Q704 11-KSB772YS0021 TRANSISTORS KS B772YS (SAMSUNG)
Q705 11-MMBT39040221 SMD TRANSIS TORS MMBT39 04 SOT23
Q706,715 11-9014C0000025 NPN TRANSIS TORS 9014C (TAPING)
Q712,713 11-ST8550C00026 TRANSISTOR ST8550C (TSK) TAPING TO-92
ZD401 12-01147032012 5 ZENER DIODE +-5 % 4.7V 1/2W (T=52mm)

ZD501 12-011680 320125 ZENER DIODE +-5 % 6.8V 1/2W (T=52mm)
ZD701 12-012 110320125 ZENER DIODE +-5 % 11V 1/2W (T=52mm)

11