KENWOOD - WM-32 - AM-FM Stereo Portable Radio - Service Manual 电路图 维修手册.pdf

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1、RadioFans.CN 收音机爱 好者资料库 NOTES 1. Removal method (Method 1) Grip the chip at the center with tweezers. Ap- ply force to rotate it to the right or left while heating the soldered connections of both ends alternately. Note: Since the components are not to be used once they have been removed, method 2 i

2、s more convenient. However, some flat package ICs can be reused if they are carefully removed without breaking the pins. 2. Installation (I) Clean all the adhesive and solder from the surface. (11) When it is difficult to solder a chip because it moves, use the procedure described in (IE) or hold th

3、e chip with tweezers. Otherwise, omit the procedure in (IJI). (IE) Apply adhesive (contact cement or the like) to the board surface at the point corresponding to the center of the chip. The thickness of the adhesive coat should be about 0.1 to 0.2 mm so that it is not squeezed out when the chip is m

4、ounted. Put the new chip on the pattern and wait until the cement sets. (IV) Quickly solder the chip as shown in the figure below. Do not apply the soldering iron directly to the elec- trodes of the chip. Place resin core solder between the chip terminal and the tip of the iron. Printed circuit boar

5、d (Method 2) Cut the chip in two at the center with cutting pliers, then melt the soldered connections with a soldering iron and remove the fragments. Foil Board / Adhesive carcult board / Adhesive ) Foil ) Adhesive SIDE VIEW I I Soldering solder Chip component I / iron (20W) / Adhesive NOTESIDIAL C

6、ORD STRINGING (V) Confirm the following points. (1 ) Ensure that the electrodes of the chip are in con- tact with the foil. (2) Ensure that there are no solder projections. Projections may come in contact with the almunum case, etc., resulting in a short. Projection Out of Chip place component / lnp

7、roper nstallation DIAL CORD STRINGING 1. Tie the end of the dial cord to the spring and fix it with adhesive. J ? ! ! J -Adhesive 2. Dress the dial cord in the direction through . 3. Wind the dial cord to the turning knob three turns around the dial pulley counterclockwise. 0 163mm +0.5 - 4. Dress t

8、he dial cord through . 5. Turn the tuning knob counterclockwise until it stops. 6. Aline the top of the pointer to the center of the mark, then fix it with adhesive. Dial pointer DISASSEMBLY FOR REPAIR REMOVING THE BACK CABINET 1. Remove the battery cover. 2. Remove a screw securing the back cabinet

9、. (Fig. 1) 3. Back cabinet is fixed to front cabinet with hooks at six points. Detach it in following order. (Fig. 2) a. Remove hooks a and by opening the portion in the arrow direction. b. Remove the back cabinet to detach the P.C. board. Note: When assembling, make certain the contact spring wire

10、contacts the front cabinet. (Fig. 3) HOW TO OPEN THE CHASSIS FRAME 1. Take off the dial cord. 2. Unsolder the portion 0 to remove the P.C. board. (Fig. 3) 3. Remove the nut 0 . (Fig. 4) 4. Remove the hook . (Fig. 4) 5. Remove the hooks 0 and to open the chassis frame. Note: When mounting chassis fra

11、me on P.C. board, make sure the dowels a and a get into the opening of the P.C. board. Battery cover - Back cabinet - Screw 2X9rnm Hook Hook Hook - /- I Hook a - - / (Fig.)-/ Contact spring wire LED P:C. board ( i . 3 ) 0 REGLAGES No REGLAGE DE LENTREE ITEM SECTION MF Sauf en cas dlndlcatlons specal

12、es, regler chaque commutateur comme suit: MODE : STEREO REGLAGE DE LA SORTIE 1 REGLAGE DU TUNER Generateur de balayage 10,7 MHz Connecter Iantenne boucle ($10 cm) A la borne de RF OUT et placer lantenne boucle pres de L003. (A1 87.5 MHz 1 kHz + 75 kHz dev 60 dB (Entree ANTI (A1 108.0 MHz 1 kHz 75 kH

13、z dev F.I. - - ALIGNEMENT (1) ALIGNEMENT (2) - 60 dB (Entree ANTI Repeter lB) les 1 points 2 et 3 plusieurs fois COO4 Ampltude maximale POINTS DE LALIGNEMENT ALIGNEMENT (3) ALIGNEMENT 14) Connecter T P la borne V de Ioscil- loscope. Connecter la borne H OUT au generateur de balayage et la borne. H d

14、e loscilloscope. ALIGNER POUR T104 TlOi TI 04 LO02 Aupres de la frequence minimale ou tout bruitage est absent (Al 90.0 MHz 1 kHz + 75 kHz dev 60 dB (Entree ANTI (A) 106.0 MHz 1 kHz * 75 kHz dbv 60 dB (Entree ANT) FIG. 87.5 MHz (Frequence mlnlmalel (Bl 108.0 MHz (Frequence maximale) Repeter les poln

15、t 4 et 5 plusieurs fos Tourner TI03 dans le sens inverse des aiguilles dune montre et derkgler. Ampltude maximale Symetrie maxmale de laffichage de Iosclloscope - Amplitude maximale (Bl 6 la) (Bl 1 106,OMHz I COO3 1 Amplitude maximale 90.0 MHz OSClLLATEUR CONTROLE PAR L A TENSION SECTION MA LOO 1 (A

16、) 98.0 MHz 0 dev 60 d (6 ANT) Ampltude maxmale (c) (1) (3) Connecter un comp- teur de frequence a TP3 par Iintermediaire du filtre (150 kR et 1000 pF1 et dun voltmhtre CA. F.I. ALIGNEMENT H.T. (1) ALIGNEMENT H.T. (21 RBpeter les points (2) et (31 plusieurs fois. 98.0 MHz (Dl GBnerateur de balayage.

17、455 kHz Connecter Iantenne boucle (010 cml B la borne de RF OUT et placer Iantenne boucle pres de L101. (A1 520 kHz 400Hz. 30% mod (A) 1650 kHz 400 Hz. 30% mod (41 (5) R 204 Rhpbter les points 14) et 15) plusieurs fois. LlOl C103 Amplitude maximale Amplitude maxlmale 76.00 kHz borne V de Ioscil- Aup

18、res de la frequence Connecter la maximale ou tout borne H OUT au bruitage est absent. generateur de balayage eta la borne H de loscilloscope. 600 kHz 1400 kHz ALIGNEMENT H.T. (3) - ALIGNEMENT H.T. (4) (bl TI03 TI05 L102 C104 (El (B) 600 kHz 1 : : I 400 Hz. 30% mod 1400 kHz 400 Hz. 30% mod Amplitude

19、maximale Amplitude maximale Amplitude maximale 520 kHz (Frequence minimale) 1650 kHz (Frequence maximalel ABG LEICH I UKW-EMPFANGSABTEILUNG AuRer wenn anders angegeben, die verschiedenen Schalter wle folgt enstellen: MODE :STEREO I INR. 1 GEGENSTAND I EINGANGS- EINSTELLUNG I Abstimmungen 2 und 3 neh

20、rere Male wederholen. I AUSGANGS- EINSTELLUNG 1 TUNER 1 ABGLEICH- EINSTELLUNG PUNKTE ZF EMPFANGSBEREICH (1) EMPFANGSBEREICH (2) EMPFANGSBEREICH (3) EMPFANGSBEREICH (4) ABGLEICHEN FJR P ? 1 ABB. 1 Abstimmungen 4 und 5 nehrere Male wederholen Ablenkgenerator: 10.7 MHz Die Rahmenantenne ($10 cm) zur RF

21、-OUT- Klemme anschlieRen und stellen sie nahe L103 gelegen. IA) 87.5 MHz 1 kHz +75 kHz Hub 60 dB (ANT-Eingang) (A) 108.0 MHz 1 kHz + 75 kHz Hub 60 dB (ANT-Engang) 1 3 kHz +75 kHz Hub 1 90.0 MHz 60 dB IANT-Eingangl 106.0 MHz 1 kHz +75 kHz Hub 106.0 MHz 60 dB (ANT-Eingang) - Eine Frequenzmesser zu TP3

22、 iiber Filter SPANNUNGS- (150 kS1 und 98.0 MHz O Hub 1000 pF) und einen OSZILLATOR 60 dB (ANT-Eingangl Wechselspan- nungsmesser anschliel3en. - (1) (31 Das TP2 und V-Kbmme des Ouilloskopes anschliel3en. Das H-OUT-Klemme des Ablenkgeneratores und H-Klemme des Oszilloskopes anxhliebn. (Bl (31 LOO 1 CO

23、O3 MW-EMPFANGSABTEILUNG 76.00 MHz Maxmale ampltude 1 1 Maxmale ampltude (bi (D) Ablenkgenerator.: 455 kHz Die Rahmenantenne ($10 cm) zur RF-OUT- Klemrne anschliebn und stellen sie nahe LlOl gelegen. Abstimmungen (2) und (3) mehrere Male wiederholen. Nahe Hijchst Frequenz wo kein Rauschen nach abwese

24、nd. Das TP2 und V-Klemme des Oszilloskopes anschliebn. Das H.OUT.Klemme des Ablenkgeneratores und H*Klemme des Oszilloskopes Nahe Mnmalster Frequenz wo ken Rauschen nach abwesend T I 03 entgegen dem Uhrzeigersinn drehen und verstlmmer Maxmale ampltude Symmetric des Oszlloskopbildes Maximale amplitud

25、e Maximale ampltude 87.5 MHz (Unterst Frequenzl 108.0 MHz (Hochst Frequenz) TI03 TI05 HF-ABGLEICH (1) HF-ABGLEICH (2) Abstimmungen (4) und (5) mehrere Male wiederholen. G O O kHz 1400 kHz -M awlitude (a) TI04 LO02 COO4 L102 C104 (8) (01 (41 C103 Maximale amplitude Maximale amplitude Maximale amplitu

26、de (A) 520 kHz 400Hz. 30% mod (A) 1650 kHz 400 Hz, 30% mod Maximale amplitude (c) anschliel3en 520 kHz (Unterst Frequenzl 1650 kHz (8) (Hochst Frequenz) HF-ABGLEICH (3) HF-ABGLEICH (4) (A) 600 kHz 400 Hz. 30% mod (A) 1400 kHz 400 Hz, 30% mod PACKING PROCEDURE E-type for Europe I I I I I I Headphone

27、assy I r 921 521 52 case I I I 1. Combine the cases of the WM-32 and the headphone back to back. 2. Wrap the primary cover around the products Instruction manual 92903723 Cushion 9293341 9 for USA Warranty card r, FTZ sheet Instruction manual EXPLODED VIEW KENV;/OOD STEREO FM-AM RECEIVER - TA7342F 9

28、 2SA1048 2SK161 PR2202S + Switches TA7687F 1. S101: Band Switch (FM position) - Flexible PC Board No signal current TA7688 F 2. S401: Mode Switch (ST position) - DC Board - DC Board Direct Contact TC9 160 F 3. S402:.Power Switch Note: - Wiring 19mA I Green oarts are chio comoonent. SPEC1 FlCATlONS F

29、requency range: FM 88 - 1 8 MHz AM 525 - 1605 kHz Power requirements: DC 3V, AAA (JIS UM-4) Cell x 2 pa. Power output: 30 mW + 30 mW (max.) Jack: Mini jack for stereo headphones (32 ohms)/earphone (8 ohms) Dimensions (WxHxD): 56 x 91 x 12.8 mm Weight: 85 g (Including batteries) Accessories: Stereo h

30、eadphones Kenwood follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. Kenwood poursuit une politique de progres constants en ce qui doncerne le developpement. Pour cette raison, les specifications sont sujettes a modifications san

31、s preavis. Kenwood strebt standige, Verbesserungen in der Ent wicklung an. Daher bleiben Anderungen der technischi Daten jederzeit vorbehalten. DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between individual instruments orland units. Les ten

32、sions C.C. doivent Btre mesurees avec un volt- metre a haute impbdance. Les valeurs peuvent differer legerement du fait des variations inherentes aux appareils et aux instruments de mesure individuels. Die angegebenen Gleichspannungswerte wurden mit einem hochohmigen. Voltmeter gemessen. Dabei schwa

33、nken die Mel3werte aufgrund von Unterschieden zwischen einzelnen instrumenten oder Geraten u.U. geringfugig. (minimum volume) PACKING PROCEDURE EXPLODED VIEW E-type for Europe f I I I I 1 Headphone assy I 92152152 case I I 1. Combine the cases of the WM-32 and the headphone back to back. 2. Wrap the

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