Notes: Specifications are subject to change without notice. Mass and dimensions are approximate.Total harmonic distortion is measured by the digital spectrum analyzer.
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ORDER NO. MD0411547C1 Service Manual SC-TM23 MODEL UNIT SC-TM23 SA-TM23 STEREO SB-TM23 FRONT SPEAKER SB-TM23 SA-TM23 SB-TM23 Specifications Potencia de salida SC-TM 23 Frontal 90W RCM por canal (5Ω) 1kHz, 10% DAT Amplificador SA-TM23 Bafles SB-TM23 FRONTAL Potencia de salida 2000 W (P.M.P.O)
WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potencial dangers in attemping to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians.
1 Safety Precaution (This “Safety Precaution” is applied only in U.S.A.)Before servicing, unplug the power cord to prevent an electric shock. When replacing parts, use only manufacturer’s recommended components for safety. Check the condition of the power cord. Replace if wear or damage is evident. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.
2 Before Repair and Adjustment Disconnect AC power, discharge Power Supply Capacitors C5820 and C5840 through a 10Ω, 5W resistor to ground. DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices. After repairs are completed, restore power gradually using a variac, to avoid overcurrent. Current consumption at AC 120V, 60 Hz in NO SIGNAL mode (volume min at CD mode) should be ~600mA.
5 Handling the Lead-free Solder 5.1 About lead free solder (PbF) Distinction of PbF P.C.B.: P.C.B.s (manufactured) using lead free solder will have a PbF stamp on the P.C.B. Caution: · Pb free solder has a higher melting point than standard solder;...
Grounding for electrostatic breakdown prevention 1. Human body grounding Use the anti-static wrist strap to discharge the static electricity from your body. 2. Work table grounding Put a conductive material (sheet) or steel sheet on the area where the traverse deck (optical pickup) is place, and ground the sheet.
10 Disassembly and Assembly of Main Component “ATTENTION SERVICER” Some chassis components may have sharp edges. Be careful when disassembling and servicing. 1.-This section describes procedures for checking the operation of the major printed circuit boards and replacing the main components. 2.-For reassembly after operation checks or replacement, reverse the respective procedures.
Insert the hexagonal screwdriver (2mm) into the gear, and 10.4 Disassembly of CD Lid then project the tip of screwdriver for 1~ 2 mm in length. (The CD changer unit can be removed after the CD Lid is removed) · Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet ·...
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Step 1 Insert the gear tool into the hole on the underside of CD chassis and then rotate in the direction of arrow. The disc Step 4 Release the 2 claws, and then remove the CD Lid. tray will be opened. Step 5 Press the OPEN/CLOSE button, the disc tray will close.
10.5 Disassembly of Rear Panel 10.6 Disassembly of CD Mechanism Unit · Follow the (Step 1) - (Step 2) of Item 10.3 - · Follow the (Step 1) - (Step 2) of Item 10.2 - Disassembly Disassembly of Top Cabinet of Top Cabinet Step 1 Remove one screw at rear panel.
Step 1 Remove the 2 screws fixed at heat sink and 1 screw 10.7 Disassembly of Main P.C.B. fixed at Power P.C.B.. · Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 6) of Item 10.4 - Disassembly of CD Lid ·...
Step 2 Break the joint with a metal cutter as shown below. 10.9 Disassembly of Transformer P.C.B. · Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 6) of Item 10.4 - Disassembly of CD Lid ·...
10.11 Disassembly of Deck Mechanism Unit · Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 6) of Item 10.4 - Disassembly of CD Lid · Follow the (Step 1) of Item 10.5 - Disassembly of the Rear Panel ·...
Step 4 Push the lever upward, and then open the cassette lid 10.12.1 Replacement of the Traverse Deck ass’y (For DECK1 and DECK2). Step 5 Tilt the cassette mechanism unit in the direction of arrow (1), and then remove it in the direction of arrow (2). ·...
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Step 4 With pressing the claw (A), rotate the hexagonal wrench clockwise. (The slide plate R moves for a little amount.) Step 5 Pressing the claw (B) in the direction of arrow (1), the connection lever moves in the direction of arrow (2). Step 8 Remove 3 screws.
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Installation for traverse deck ass’y Step 12 Release the claw, and then remove the traverse deck ass’y. Note: Be careful not to lose the 3 floating spring because those will also be removed on removal of the traverse deck ass’y. ·...
Step 3 Force the claw of timing lever. Step 5 With pressing the claw (B) in the direction of arrow (1), force the connection lever in the direction of arrow (2). 10.12.2 Replacement for the Disc Tray Step 1 Remove 4 screws. Step 2 Remove the upper plate.
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Step 4 With lifting the claw in the direction of (1), draw the Step 7 Rotate the hexagonal wrench in the direction of arrow, CD Detect P.C.B. in the direction of arrow (2). and then open the disc tray fully. Step 5 Remove the mechanism cover.
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Step 9 With forcing the left guide bar manually because the Step 2 Holding the drive rack not to move, install the disc left guide bar interfers with claw, draw the disc tray. tray. [Installation of the disc tray after replacement] Step 3 Align the drive rack with the drive gear.
Step 4 Remove the pulley gear, change gear and UP/DOWN 10.12.3 Disassembly and reassembly for gear. mechanism base drive unit Step 1 Remove 3 screws. Step 5 Release the 2 claws, and then remove the bottom SW P.C.B.. Step 2 Release the claw, and then remove the gear holder. Step 3 Remove the belt and change gear spring.
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Step 6 Install the tray lock spring to hook temporary. Step 9 Pressing the claw (B) in the direction of arrow (1), force the connection lever in the direction of arrow (2). Step 7 Release the claw, and then remove the tray lock. Step 8 Release the claw, and then remove the rear lock.
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Step 11 Lift up the left end of spindle base unit in the Step 12 Remove slide plate 1 and slide plate 2. direction of arrow (1), and then remove the unit in the direction of arrow (2). Step 13 Remove the traverse relay gear, traverse cam gear and drive gear.
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Step 2 Pushing the claw, slide the support plate in the direction of arrow, and then remove it. Step 3 Rotate the disc lever in the direction of arrow (1), draw the disc lever. Step 4 Release the 2 claws, and then draw the relay gear B. Step 5 Release the 2 claws as shown below.
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Step 8 Release the 2 claws, and then remove the relay gear Step 9 Release the 2 claws, and then remove the spindle shaft. Step 6 Remove the cushion spring. Step 7 Remove the loading stopper ass’y in the direction of Step 10 Remove the lower spindle spring with tweezers.
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Step 2 Lower the loading stopper ass’y, and then align the lower spindle with the trapezoid tooth of relay gear A. Step 13 Rotate the lower spindle in the direction of arrow until the lower spindle interferes with stopper. Step 14 Insert the thin tip of minus screwdriver between the lower spindle and UP/DOWN base, and then slacken the lower spindle to release the stopper.
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Step 1 Install the traverse cam gear. *When installing the traverse relay gear, align the Step 2 Rotate the traverse cam gear to the direction of arrow. trapezoid tooth of gear with tooth of traverse cam gear. Step 3 Install the drive gear and traverse relay gear. Step 4 Install the slide plate 2 to the mechanism base, and then match to the connection lever.
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Step 11 Remove the tray lock spring from hook,and then latch to the tray lock. Step 12 Install the UP/DOWN gear, change gear, change gear spring, pulley gear and belt in the order of (1) - (5). Step 7 Move the slide plate 1 to forward fully. Step 8 Install the rear lock.
Step 13 Install the gear holder, and then tighten the screw 10.12.4 Replacement for the motor ass’y (a). Step 1 Install the belt temporarily. NOTE: Take care not apply the grease to the belt. Step 2 Upset the CD loading unit. Step 3 Remove 3 screws Step 14 Install the tray base, traverse ass’y, mechanism cover and upper plate.
10.13 Replacement for the pinch roller ass’y and head block · Follow the (Step 1) - (Step 2) of Item 10.2 - Disassembly of Top Cabinet · Follow the (Step 1) - (Step 6) of Item 10.3 - Disassembly of CD Lid ·...
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Step 4 Remove 3 screws. Step 3 Remove 2 screws. 10.14 Replacement for the pinch roller ass’y , capstan belt A, capstan belt B and winding belt · Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet ·...
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[Installation of the belt] Step 4 Put the winding belt on the flywheel F. Step 1 The boss and marking should be positioned Step 5 Install the winding lever and spring while pressing the horizontally. winding arm in the direction of arrow. Step 6 Install the flywheel R.
Step 8 Put the capstan belt B on the motor ass’y pulley. 10.15 Replacement for the cassette lid ass’y Step 9 Install the sub chassis to the mechanism, and then tighten screws. · Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet Step 1 Force the lever upward, open the cassette lid ass’y.
Step 2 Force the lever upward and open the cassette lid 10.16 Rectification for tape jam problem ass’y. Take the cassette tape off. · Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet Step 1 If a cassette tape cannot be removed from the deck since the tape is caught by the capstan or pinch roller during playback or recording, rotate the flywheel F in the direction of the arrow to remove the tape.
11 Checking for major P.C.B. Note: Checking of all major P.C.Bs (Main P.C.B., Panel P.C.B., Deck P.C.B., Deck Mechanism P.C.B., Transformer P.C.B., Power P.C.B.) can be carried out using below procedures. For the disassembling procedure, see Section 10. 11.1 Checking for Main P.C.B. 11.2 Checking for Transformer P.C.B.
11.3 Checking of Panel, Deck& Deck 11.4 Checking the Power P.C.B. Mechanism P.C.B. 1. Remove Top Cabinet and Rear Panel. 2. Remove CD Lid. 1. Remove Top Cabinet. 3. Remove CD Mechanism Unit. 2. Remove CD Lid. 4. Remove 3 screws at Transformer P.C.B.. 3.
12 Self-Diagnostic Function 12.1 Self-diagnostic display 12.3 Cassette Mechanism Test (For error code H01, H02, H03, F01) This unit is equipped with a self-diagnostic display function 1. Press “TAPE, DECK 1/2” to select Deck 2. which, if a problem occurs, will display an error code corresponding to the problem.
12.5 To clear all Error code 1. Press “STOP/TUNE MODE” button for 5 seconds. 2. FL indicator shows “CLEAR” for 1 second and change to “T”. 12.6 How to get out from Self-Diagnostic function 12.7 Power Amplifier Failure (F61) 1. When power amplifier fail, F61 will indicate 1.
12.8.3 Power supply related error detection Abnormal Items Error Method of Detection Display POWER AMP During normal operation, if DCDET 1/2 becomes ‘L’, normal POWER OFF process shallnot be output abnormal executed, PCNT shall be switched to ‘L’ immediately. GOODBYE shall not be displayedand the error display F61 will be displaye instead.2 seconds after the F61display, ECONO shall be set to ‘L’...
13 CD Test Mode Function This CD test mode is provided to check CD unit without connecting to changer loading mechanism. This mode shall operate CD PLAY with CD unit being connected only and CD Automatic Alignment result is shown on FL display. 13.1 How to set CD test mode 13.3 CD Mecha Aging Test Mode (CR20) 1.
Fig.5 14.3 Alignment Points 14.3.1 Cassette Deck Section Fig.6 14.2.2 AM RF Adjustment 14.3.2 Tuner Section Connect the instrument as shown in Fig. 7. Set the unit to AM mode. Set AM-SG to 520kHz. Receive 520kHz in the unit. Adjust Z2602 (OSC) so that the EVM-AC is maximized. Set AM-SG to 600Hz.
17 Schematic Diagram (All schematic diagrams may be modified at any time with · The voltage value and waveforms are the the development of the new technology) reference voltage of this unit measured by DC electronic voltmeter (high impedance) and oscilloscope on the basis Note: of chassis.
21 Terminal Function of IC’s 21.1 IC7002 (MN6627953HB) Servo processor/ Digital signal processor/ Digital filter/ D/A converter Pin No. Mark Function Pin No. Mark Function Tracking input signal 3 EXT0 Extend input/output port 0 Focus input signal 1 EXT1 Extend input/output port 1 DCDET Detection HPF capacitance EXT2...
21.3 IC2801 (CC2CBJG000564) System Pin No. Mark Function Microprocessor BLKCK Subcode block clock NRST LSI reset input (L: RESET) Pin No. Mark Function DVSS3 Digital circuit GND 3 LM_1 Level Meter Left N.C. No Connection Crystal oscillator circuit PLL_CE PLL Chip Select output RDS_DAT RDS Data...
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Pin No. Mark Function L when record circuit is operating DECK1_H H when DECK 1 P/B head is selected N.C. No Connection Power Supply (+5V) N.C. No Connection Ground (0V) 65-66 N.C. No Connection V_JOG_A Volume Jog A V_JOG_B Volume Jog B EX1_CLK *1 I/O Expander Clock EX1_DAT...
23 Parts Location and Replacement Parts List Notes: · Important safety notice: Components identified by mark have special characteristics important for safety. Furthermore, special parts which have purposes of fire-retardent (resistors), high-quality sound (capacitors), low noise (resistors), etc are used. When replacing any of these components, be sure to use only manufacturer’s specified parts shown in the parts list.
23.4 Electrical Parts List Ref. No. Part No. Part Name & Description REPM05230A CONJUNTO MANUAL TRANSFORMADOR SC-TM23 RENM05230A CONJUNTO RADIAL TRANSFORMADOR SC-TM23 RENM05230AZ CONJUNTO AXIAL TRANSFORMADOR SC-TM23 RENM05230AJ CONJUNTO JUMPER TRANSFORMADOR SC-TM23 REPM05231A CONJUNTO MANUAL PODER SC-TM23 RENM05231A CONJUNTO RADIAL PODER SC-TM23...
DN83K DIABOND T8E538AD FLUX RZBM0003-1 ADHESIVO 444-2 TB-2217-H ADHESIVO CHIP BONDER 20ML T8EC026AD SOLVENTE T2KA01810 SOLDADURA EN ROLLO T2KD00500 SOLDADURA EN BARRA RSC0027-3 BLINDAJE 23.5 Packing Materials& Accessories Parts List Ref. No. Part No. Part Name & Description Remarks PACKING MATERIALS RPGM0189 PACKING CASE [M]P-S...
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SB-TM23 Service Manual Connection 1 Connection of the Speaker Cables · Be sure to connect speaker cables before connecting the AC power supply cord. · The load impedance of any speaker used with this unit must be 5Ω. · Be sure to connect the cable from the right speaker to the right terminal and the cable from the left speaker to the left terminal.
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2 Connection of the Speaker Wiring 3 Cabinet Parts Location...
4 Replacement Parts List Notes : · Important safety notice : When replacing any of these components, be sure to use only manufacturer’s specified parts shown in the parts list. · [M] markings in the Remarks columns indicates parts supplied by PAVCSG . Ref.