Technics-SUCH7-int-sm 电路图 维修手册.pdf

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1、RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 SU-CH7 Fiatcables (2) Blue (REX9162) Black (REX9163) Back cover (4) jf.JUH for CD player zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA / for tuner for amplifler for cassette deck LW/MW loop antenna (1) and Antenna fiolder (1) and mounting screws

2、 (2) - 1 j HOW TO INSTALL THE SYSTEM Installing the components vertically Left speaker SB-CH7 DES O O O O O Right speaker Compact disc SB-CH7 player SL-CH7 Tuner ST-CH7L Amplifler SU-CH7 Cassette deck RS-CH7 Installing the components horizontally Compact disc Tuner player ST-CH7L SL-CH7 O O ca O O O

3、 O O O O Amplifler Cassette deck SU-CH7 RS-CH7 Installing the components onaline Amplifler Tuner Cassette deck SU-CH7 ST-CH7L RS-CH7 O O c=i O O OO O l _ _ O O O O O Compact disc player SL-CH7 - 3 - RadioFans.CN 收音机爱 好者资料库 SU-CH7 CONNECTIONS Flat cables After connection, please fold and press tfie c

4、ables as flat to thie back of the unit as possible. From the amplifier to the cassette deck (Blue) (Blue) From the compact disc player via the tuner to the amplifier (Black) (Black) Connecting Hold the connector with the recessed part up and press in at the center until you hear a click. The white l

5、ine should be on the rightside. Power switch is located on the rear panel. Make sure that the power switch on the back of the amplifier is switched ON. Black Blue Black Blue When installing the back cover, put this flat cable out of the back cover. SU-CH7 Speaker cables Other types of speaker cannot

6、 be connected to tfiis unit. Matcti the four wires from the left and right speaker cables with the same colored levers of the speaker terminales, then insert the wires into the respective terminals. Twist the wire. Push down on the lever, insert the bare ends of the wires, and push up the lever. (Re

7、fer to the right) Note: tVlake sure the bare ends of the wires are not unraveled. (If they are, twist them tight again.) Take care not to short the wires. (The main unit could be damaged if they are shorted.) First connect the cables to the speakers, then to the amplifier. (Blue; (Black) Speaker e e

8、 0 Amplifier Notice for speaker connections: Connect each color coded wire of the speaker cable to the corresponding color coded terminal according to the following chart. Polarity -+ High tone Blue Gray Low tone Black Red External unit connection DAT (digital audio tape deck) PHONO (turntable syste

9、m) IN ( PU 1 ( T C ) 1 )U1 PUT stereo - pin cord If R E C O U T PLAYBACK O R L J J DAT DAT Amplifier OUTPUT 9 Stereo pin cord _ PHONO Od) GND zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA Q R L Turntable Amplifier GND terminal Thls terminal Is for use with turntables which have a ground wire.

10、 - 5 - SU-CH7 LOCATION OF CONTROLS (2) SUPEI QASS VOL F iESE - I I II D n n - Bi-AMP Bi-WIRING Amplifier: control section Sound effect level control (SOUND JOG) This control is used for adjusting the level of the amblence enhancement effect and the equalization level. (2) Ambience enhancement button

11、 (SPACE) This button is used to activate ambience enhancement mode. (3) Spectrum mode-select/demonstration button (-SPECTRUM MODEDEMO) This button is used to select one of the six spectrum curves. If you press and hold this button, sIx types of sound effects (spectrum curve in combination with ambie

12、nce enhancement) will be sequentially changed (Demonstration mode). (4) Super bass indicator llluminates when the super bass mode is actlvated. (5) Super bass button (SUPER BASS) . When this button is pressed, the dynamic low frequency ranges are boosted. (6) Volume preset button (VOL. PRESET) This

13、button is used to make a volume presetting. Volume level control (VOLUME) This control is used to adjust the volume level (-82 d B - O dB). Note that - 8 2 dB is the lowest volume setting and O dB is the highest level setting. Equalization function button (ON/FLAT) This button is used to switch the

14、equalization correction function. If no equalization correction is desired, press this button again to cancel the function. Headphones jack (PHONES) Microphone jack (MIC) Equalization mode-select/recall button (-MODERECALL) This button is used to retrieve a pre-programmed equalization curve from the

15、 memory. If you press and hold this button, a curve you programmed can be retrieved. Input selectors and indicators These selectors are used to select the sound source to be heard. When the sound source is selected, the indicator above the selector will illuminate. Standby indicator (STANDBY) This i

16、ndicator llluminates when the power STANDBY/ON switch of the unit or that of the remote control is switched OFF. lts purpose is to alert the user of the constant supply voltage to the internal circuitry even with the power switch OFF. For this unit, even if this switch is switched to the STANDBY pos

17、ition, there is still a slight power consumption of about 17 watts: this is in order to retain of the most recent memory and the preset-memory functions. - 6 - SU-CH7 Ref. No. 5 Removal of the Operation P.C.B. Ref. No. 6 Removal of the Microphone/ Headphone Jack P.C.B. Procedure Procedure Holder 1.

18、Remove 3 screws (O0)- 2. Remove 4 claws. Microphone/ HeadphoneJack P.C.B. 1. Remove the screw (O)- - .-. 2. Remove the holder. 3. Remove the P.C.B in the direction of arrow. Ref. No. 7 Removal of the Rear Panel Ref. No. 8 Removal of the Input-Output terminal P.C.B. Procedure Input-Output terminal P.

19、C.B. 1. Remove 10 screws (0(D)- 2. Remove the connectorCP902). 3. Remove the rear panel in the direction of arrow. Remove the P.C.B. in the direction of arrow. Ref. No. 9 Removal of the TP. P.C.B. Ref. No. 10 Removal of the Main P.C.B. Procedure Procedure 1 2 3 78910 TP. P.C.B. O O 0 CN701 IVIain P.

20、C.B. 1. Remove the screw (O)- 2. Remove the P.C.B. in the direction of arrow. 1. Remove the flat cable(CN701) 2. Remove 5 screws (0)- - 9 - SU-CH7 Ref. No. 11 Removal of the Power IC and Regulator Transistor Ref. No. 12 Removal of the Power Transformer Procedure 1 -2 3 7-8-* 9-10 Procedure 112 0 Pow

21、er IC (Tweeter) Regulator transistor 1. Unsolder the power IC. 2. Remove 4 screws (00)- When mounting the power IC or regulator transistor. Apply silicone compound (SZZOL155) to the rear side of power IC or regulator transistor. 1. Remove the flat cable (CN701). 2. Remove the 4 screws (00)- Ref. No.

22、 13 Procedure 1 7 1 3 Removal of the Fan Motor 3. Remove the motor cover (shown in Fig. 3). 4. Remove the motor from the fan casing (shown in FIg. 4). 5. When mounting the motor fan. align the fan casings progection with the hole of the fan motor (shown in Fig. 5). 1. Release the 3 claws (shown in F

23、ig. 1). 2. Insert a screwdriver at the root of the cooling fan. Fan Motor Rear Panel Motor cover Fig. 2 Boss Fan casings Motor Fig. 5 Fig. 4 - 1 0 - SU-CH7 Ref. No. 15 1. Remove 2 screws (O. ) 2. Lift the volume/filter P.C.B. in the direction of arrow. Rear panel 3. Remove 5 screws (0). AC Inlet P.C

24、.B. Front panel VCN501 C l a w , 5. Remove 2 screws 6. Remove the front panel in the direction of arrow. ,. Note: Conect the flat cable to the connectors (CN204, CN501). 7. Remove the screw(). 8. Remove 2 claws and then remove the AC inlet P.C.B. r 9. Reinstall the front panel to the Main P.C.B. - 1

25、 1 - SU-CH7 WIRING CONNECTION DIAGRAM THERMISTOR P.C.B. MIC/HEADPHONES JACK P C B . - 2 5 - SU-CH7 FUNCTIONS OF IC TERMINALS IC601 (M5D945-083SP) Pin No. Mark 1/0 Division Function 1 VREF Connected to A/D converter reference voltage VCC 2 ) 6 SA ( SE Spectrum analyser input AE A/D input 7 KEY 1 Key

26、input 8 BUS DATA IN External control data signal input 9 BUS CLKIN External control clock signal input 10 BUS DATA OUT 0 External control data signal output 11 BUS CLK OUT 0 External control clock signal output 12 POWER 1 Input for power ON/OFF detection 13 VCR 0 Image signal switch output 14 MUT1 0

27、 Muting output H level when mute is on mode 15 MUT2 0 -10 dB muting output 16 DATA 0 Serial data output 17 CLK1 0 Clock output extracted from serial data 18 STB 0 Serial clock strobe 19 BASS O Super bass indicator motor Super bass sound control signal output 20 CLK2 0 Clock output for graphic equali

28、zer and extracted serial data 21 CLK3 0 FL display output Pin No. Mark 1/0 Division Function 22 24 CS1 CS2 Connected GND 23 PWM 1 Electric volume control PWM output 25 HOLD 1 Hold mode detection signal input 26 G Connected to GND 27 RESET Reset input 28 29 X.IN X.OUT 10 Clock input-output Connected

29、to oscillator (X601) (4.19 kHz) 30 XCIN 1 Connectd to GND 31 XCOUT 0 Mot connected 32 VSS Connected to GND 33 NC Not connected 34 35 SJO SJ1 1 Sound jog input 36 37 VRO VR1 1 Encoder VR input 38 - VP 1 Pull down voltage input for FL 39 ( 51 G13 ) G1 0 Grid output for FL 52 ( 62 SI S11 O Segment outp

30、ut for FL 63 AD VCC 1 A/D converter reference voltage 64 VCC 1 Power supply SU-CH7 REPLACEMENT PARTS LIST Not es : * I m por t ant saf et y not i ce: Coaponent s i dent i f i ed by A aar k have speci al char act er i st i cs i apor t ant f or saf et y. W hen r epl aci ng any of t hese coaponent s us

31、e onl y aanuf act ur er s speci f i ed par t s. The par ent hesi zed i ndi cat i ons i n t he Reaar ks col um ns speci f y t he ar eas. ( Ref er t o t he cover page f or ar ea. ) Par t s wi t hout t hese i ndi cat i ons can be used f or al l ar eas. Rem ot e Cont r ol Ass y: Suppl y per i od f or t

32、hr ee year s f r om t er m i nat i on of pr oduct i on. Hef . No. Par t No. Par t Nam e L0122-C ORNAM ENKSUPER BASS) Al l SSA270M FM ANTENNA ( E. EB, EG ) 23 RG U0548B- K BUn ON. SELECTO R AU SSA272M FM ANTENNA (G C, G N) 24 RFKNUCH7E- K VO LUM E O RNAM ENT ASS Y A12 SJP909 AHACI W ENT PLUG Am 25 SN

33、E2123 G ND SCREW ( E, EB, EG ) A13 SJP9215 AC PLUG ADAPTOR Am 26 RM N0120 FL HO LDER 27 RM N0144 HO LDER ( E. EB. EG . CN) PACKI NG M ATERI AL PI RPG 0925 PACKI NG CASE SYSTEM ( E) PI RPG 1044 PACKI NG CASE SYSTEM (EB) PI RPG1D45 PACKI NG CASE SYSTEM ( EG ) PI RPG1051 PACKI NG CASE SYSTEM ( G C) PI RPG 1052 PACKI NG CASE SYSTEM (G N) P2 RPG0821 PACKI NG CASE ST- CH7, SL- CH7 -3 6 -