Panasonic-SAAK177-cs-sm 电路图 维修手册.pdf

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1、ORDER NO. MD0105111C3 CD Stereo System SA-AK177 Colour (S). Silver Type Area (GC).Asia, Latin America, Africa and Middle Near East TAPE SECTION : AR2 MECHANISM SERIES CD SECTION : RAE0152Z-3 TRAVERSE DECK SERIES 12005-05-13 RadioFans.CN 收音机爱 好者资料库 SPECIFICATIONS Specifications AMPLIFIER SECTION PMPO

2、3000 W RMS power output THD 10%, both channels driven Front 80 Hz (Low channel)75 W per channel (8 ) Front 1 kHz (High channel) 40 W per channel (8 ) Center 1 kHz100 W (8 ) Surround 1 kHz35 W per channel (8 ) Total power output in Dolby Pro Logic mode 400 W RMS power output THD 10%, both channels dr

3、iven 80 Hz (Low channel)75 W per channel (8 ) 1 kHz (High channel)40 W per channel (8 ) Total power output in stereo mode 115 W Input sensitivity AUX250 mV MIC0.7 mV Input Impedance AUX13 k MIC680 FM TUNER SECTION Frequency range87.50 - 108.00 MHz (50 kHz steps) Sensitivity 2.5 V (IHF) S/N 26 dB 2.2

4、 V Antenna terminal(s)75 (unbalanced) AM TUNER SECTION Frequency range522 - 1629 kHz (9 kHz steps) 520 - 1630 kHz (10 kHz steps) Sensitivity S/N 20 dB (at 999 kHz) 560 V/m CASSETTE DECK SECTION 22005-05-13 RadioFans.CN 收音机爱 好者资料库 Track system4 track, 2 channel Heads Record/playbackSolid permalloy he

5、ad ErasureDouble gap ferrite head MotorDC servo motor Recording systemAC bias 100 kHz Erasing systemAC erase 100 kHz Tape speed4.8 cm/s Frequency response (+3 dB, -6 dB at DECK OUT) NORMAL (TYPE I)35 Hz - 14 kHz HIGH (TYPE II)35 Hz - 14 kHz S/N50 dB (A weighted) Wow and flutter0.18% (WRMS) Fast forw

6、ard and rewind time Approx. 120 seconds with C-60 cassette tape CD SECTION Sampling frequency44.1 kHz Decoding16 bit linear Beam source/wave length Semiconductor laser/780 nm Number of channelsStereo Frequency response20 Hz - 20 kHz (+1, -2 dB) Wow and flutterBelow measurable limit Digital filter8 f

7、s D/A converterMASH (1 bit DAC) Video CD Video dataBased on MPEG 1 Audio dataBased on MPEG 1 Layer 2 Video output Video formatNTSC/PAL Output voltage1 Vp-p, 75 k Physical formatBased on CD-ROM format GENERAL Power supplyAC 110 V/127 V/220-230 V /240V, 50/60 Hz Power consumption150 W Power consumptio

8、n in standby mode 0.9 W Dimensions (W x H x D)250 x 332 x 319 mm Mass9.0 kg SYSTEM SC-AK177 (GC)Music Center: SA-AK177 (GC) Speaker: SB-AK77 (GC) 32005-05-13 RadioFans.CN 收音机爱 好者资料库 Speaker: SB AK77 (GC) Center speaker: SB- PC70A (GC) Surround speaker: SB- PS70A (GC) Notes: 1. Specifications are sub

9、ject to change without notice. Weight and dimensions are approximate. 2. Total harmonic distortion is measured by the digital spectrum analyzer. 3. HIGH stands for High Frequency. LOW stands for Low Frequency. 1 1. Before Use Be sure to disconnect the mains cord before adjusting the voltage selector

10、. Use a minus(-) screwdriver to set the voltage selector (on the rear panel) to the voltage setting for the area in which the unit will be used. (If the power supply in your area is 117V or 120V, set to the “127V” position.) Note that this unit will be seriously damaged if this setting is not made c

11、orrectly. (There is no voltage selector for some countries, the correct voltage is already set.) 2. Before Repair and Adjustment Disconnect AC power, discharge Power Supply Capacitors C572, C584-C587 through a 10 , 5W resistor to ground. DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for i

12、nstance), as this may destroy solid state devices. After repairs are completed, restore power gradually using a variac, to avoid overcurrent. Current consumption at AC 110V, 50Hz and AC 240V, 50Hz in NO SIGNAL mode should be 600 mA. 42005-05-13 3. Protection Circuitry The protection circuitry may ha

13、ve operated if either of the following conditions are noticed: - No sound is heard when the power is turned on. - Sound stops during a performance. The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are “shorted”, or if s

14、peaker systems with an impedance less than the indicated rated impedance of the amplifier are used. If this occurs, follow the procedure outlines below: 1. Turn off the power. 2. Determine the cause of the problem and correct it. 3. Turn on the power once again after one minute. Note: When the prote

15、ction circuitry functions, the unit will not operate unless the power is first turned off and then on again. 4. Accessories Remote Control Transmitter FM indoor antenna AC mains lead 52005-05-13 AM Loop antenna Power plug adapter 62005-05-13 Video connection cable 5. Handling Precautions For Travers

16、e Deck The laser diode in the traverse deck (optical pickup) may break down due to potential difference caused by static electricity of clothes or human body. So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup). - Handling of traverse deck (optical pickup) 1

17、. Do not subject the traverse deck (optical pickup) to static electricity as it is extremely sensitive to electrical shock. 2. The short land between the No.4(LD) and No.5(GND) pins on the flexible board (FFC) is shorted with a solder build-up to prevent damage to the laser diode.To connect to the P

18、C board, be sure to open by removing the solder build-up, and finish the work quickly. 3. Take care not to apply excessive stress to the flexible board (FFC). 4. Do not turn the variable resistor (laser power adjustment). It has already been adjusted. 72005-05-13 - Grounding for electrostatic breakd

19、own 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 placed, and ground the sheet. Caution : The stat

20、ic electricity of your clothes will not be grounded through the wrist strap. So, take care not to let your clothes touch the traverse deck (optical pickup). Caution when Replacing the Traverse Deck : The traverse deck has a short point shorted with solder to protect the laser diode against electrost

21、atics breakdown. Be sure to remove the solder from the 82005-05-13 short point before making connections. 6. Precaution of Laser Diode Caution : This product utilizes a laser diode with the unit turned ON, invisible laser radiation is emitted from the pick up lens. Wavelength : 780 nm Maximum output

22、 radiation power from pick up : 100 W/VDE Laser radiation from pick up unit is safety level, but be sure the followings: 1. Do not disassemble the optical pick up unit, since radiation from exposed laser diode is dangerous. 2. Do not adjust the variable resistor on the pick up unit. It was already a

23、djusted. 3. Do not look at the focus lens using optical instruments. 4. Recommend not to look at pick up lens for a long time. ACHTUNG : Dieses Produkt enthlt eine Laserdiode. Im eingeschalteten Zustand wird unsichtbare Laserstrahlung von der Lasereinheit abgestrahlt. Wellenlnge : 780nm Maximale Str

24、ahlungsleistung der Lasereinheit :100 W/VDE Die Strahlung an der Lasereinheit ist ungefhrlich, wenn folgende Punkte beachtet werden: 1. Die Lasereinheit nicht zerlegen, da die Strahlung an der freigelegten Laserdiode gefhrlich ist. 2. Den werkseitig justierten Einstellregler der Lasereinhit nicht ve

25、rstellen. 92005-05-13 3. Nicht mit optischen Instrumenten in die Fokussierlinse blicken. 4. Nicht ber lngere Zeit in die Fokussierlinse blicken. ADVARSEL: I dette a apparat anvendes laser. CAUTION! THIS PRODUCT UTILIZES A LASER. USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN

26、THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. Use of Caution Labels 102005-05-13 7. Operation Procedures 112005-05-13 122005-05-13 8. Disassembly and Main Component Replacement Procedures 132005-05-13 “ATTENTION SERVICER” Some chassis components may have sharp edges. Be careful

27、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. Special reassembly procedures are descr

28、ibed only when required. 3. Select items from the following index when checks or replacement are required. Contents - Disassembly and assembly main unit 1. Checking of the Main, VCD, Panel, Deck and Power P.C.B. - Main Component Replacement Procedures 1. Replacement of the Traverse Deck. 2. Replacem

29、ent of the Power Amplifier IC. - Disassembly and assembly of the Traverse Unit - Disassembly and assembly of the Disc Tray Warning: This product uses a laser diode. Refer to caution statement Precaution of Laser 142005-05-13 Diode. ACHTUNG: Die Lasereinheit nicht zerlegen. Die Lasereinheit darf nur

30、gegen eine vom Hertsteller spezifizierte Einheit ausgetauscht werden. 8.1. Disassembly Procedure For Each Major P.C.B. Checking 8.1.1. Checking of the Main, VCD, Transformer, Panel and Deck P.C.B. Step 2 Remove the top cabinet. Step 3 Remove the T-bracket. 152005-05-13 162005-05-13 Step 5 Turn locat

31、ing pin on both sides 90. (Locating pin need not to be bent back.) 172005-05-13 Step 6 Release the Main P.C.B. connectors CN305,CP402, CP403, CN204, CN205, CP400,and VCD P.C.B. connectors CN802, CN 803. Remove rear panel by pulling it backward and lift the rear panel assembly. 182005-05-13 Step 7 Us

32、e a hexagonal wrench and turn clockwise to release the tray. 192005-05-13 Step 8 Pull the CD tray in the direction shown above. 202005-05-13 Step 9 Remove the CD lid in the direction of the arrow. 212005-05-13 Step 11 Release the two catches shown above to remove the front cabinet from the CD traver

33、se unit. 222005-05-13 Step 12 Connect back the wire to CN302, CN303 and CN304. Use the extension wire (REXX0261) to connect to CN502. Use a FFC wire (REEX0137) to connect CN1 to CN309. 8.1.2. Checking for Panel, Main and Deck P.C.B. 232005-05-13 242005-05-13 Step 1 Remove 2 screws each side. 8.1.3.

34、Checking for Power P.C.B. 252005-05-13 8.2. Main Component Replacement Procedures 1. Replacement of the Traverse Deck Step 1 Follow the procedures in Disassembly of the Traverse Unit ( Step 1 - Step 4 ) 262005-05-13 Step 3 Desolder the 4 legs of the 2 motors and pull out the Servo P.C.B. Step 4 Wide

35、n the 3 bosses with a flat screwdriver and pull out the 3 pins. Then remove the Traverse Deck. 272005-05-13 Step 5 Remove the flexible cable CN 701. - Removal of the flexible cable. Push the top of the connector in the direction of the arrow 1, and then pull out the flexible cable in the direction o

36、f the arrow 2. Note: Insert a short pin into the flexible cable for traverse unit. - Installation of the CD servo P.C.B. after replacement Step 1 Connect the FFC board. Step 2 Install the CD servo P.C.B. in the traverse deck assembly. 282005-05-13 Note: Before installing the CD servo P.C.B., move th

37、e optical pickup towards the outer edge from the marking (black triangle). Otherwise, the reset detect switch (S701) mounted on the CD servo P.C.B. may be damaged. 292005-05-13 2. Replacement of the Power Amplifier IC Step 1 Follow the procedures in Checking Procedure for each major P.C.B. ( Step 1

38、- Step 4 ). Step 2 Remove the wires at CP400 and CP401 and pull out the Main P.C.B. Step 3 Remove 4 screws fixed to the Power Amplifier IC. 302005-05-13 Step 4 Unsolder the terminals of Power Amp IC and replace the respective component. 312005-05-13 8.3. Disassembly and assembly of the Traverse Unit

39、 Step 1 Push the lever from position A to B. Step 2 Pull the stopper (black) in the direction of arrow 1 and push the lever in the direction of arrow 2. Step 3 Push the stpeer (black) down until the white lever eject out. 322005-05-13 Step 4 Lift up the traverse unit and slide out the unit as shown.

40、 - Replacement of Traverse Unit 332005-05-13 Step 1 Place the traverse unit as shown. Step 2 Press in the lever shaft in the direction of arrow 1 as shown and push the traverse unit into the position in the direction of arrow 2. Step 3 Pull the stopper in the direction of arrow 1 and release the lev

41、er in the direction of arrow 2 as shown. 342005-05-13 Step 4 Pull out the tray half way and push it back fully. Step 5 Push the lever to the initial position indicated I-I. 8.4. Disassembly and assembly of the Disc Tray 352005-05-13 Step 2 With lifting the claw in the direction of arrow 1, draw the

42、clamp SW P.C.B. in the direction of arrow 2. Step 3 Remove the mechanism cover. 362005-05-13 Step 4 Insert the gear with hexagonal wrench into the hole. 372005-05-13 Step 5 Rotate the hexagonal wrench in the direction of arrow (clockwise), and then open the disc tray fully. 382005-05-13 Step 6 Upset

43、 the CD changer unit again. Step 7 Release both the claws, and then draw the disc tray. 392005-05-13 Step 8 With forcing the left guide bar manually because the left guide bar interfers with claw, draw the disc tray. - Installation of the disc tray after replacement 402005-05-13 Step 1 Slide the dri

44、ve rack fully in the direction of arrow. 412005-05-13 422005-05-13 Step 2 Holding the drive rack not to move, install the disc tray. Step 3 Align the drive rack with the driver gear. 432005-05-13 Step 4 Holding the disc tray manually, rotate the pulley gear in the direction of arrow. Step 5 Rotate t

45、he gear 5 or 6 times manually, and then push the disc tray. 9. Self-Diagnostic Function 9.1. Self-diagnostic display This unit is equipped with a self-diagnostic display function which, if a problem occurs, will display an error code corresponding to the problem. Use this function when performing ma

46、intenance on the unit. 9.2. How to enter the Self-Diagnostic Function 442005-05-13 9.3. Cassette Mechanism Test (For error code H01, H02, H03, F01, F02) 1. Press “TAPE, DECK 1/2” to select Deck 2. 2. Load a cassette tape with the erasure prevention tab, remove from left side only and close the casse

47、tte holder. 3. Press “FAST FORWARD MEMORY” (Tape will be stop after 2 seconds) 4. Load a cassette tape with the erasure prevention tab, remove from right side only and close the cassette holder. 5. Press “REVERSE FM MODE/BP” (Tape will be stop after 2 seconds) 6. Load a pre-recorded tape with both s

48、ide record tabs intact and close the cassette holder. 7. Press “PLAY/TUNE/TIME ADJ UP” (After TPS function, tape will stop 452005-05-13 automatically) 8. Press “REC/STOP” (Tape will not move) 9. Press “STOP/TUNE MODE” to indicate Error code. - If several problem exist, error code will change each ti

49、me when “ / TUNE MODE” is pressed. (e.g. H01 H03 F01 .etc.) 10. Press “TAPE, DECK 1/2” to select Deck 1. 11. Repeat step 2 to 9 to test Deck 1. (Tape Deck 1 will not check H02 because of no recording function) 9.4. CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29, H15) 1. Press “CD”. 2. Press “OPEN/CLOSE (1)” and place a CD. 3. Press “OPEN/CLOSE (1)” to close the tray. 4. Press “OPEN/CLOSE (5)” and wait until the tray is open. 5. Press “OPEN/CLOSE (1)” and remove the CD. 6. Press “OPEN/CLOSE (1)” t