Jvc-KSFX-725-R-Service-Manual(1) 电路图 维修手册.pdf

SERVICE MANUAL CASSETTE RECEIVER No.49721 Mar. 2002 COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD. KS-FX725R KS-FX725R Area Suffix EE - Russian Federation Contents Safety precaution Disassembly method Adjustment method Description of major ICs 1-2 1-3 1-18 1-22 MO TP TP RDSRDS PTYPTY DISPDISP 891011127 DAB RadioFans.CN 收音机爱 好者资料库 1-2 KS-FX725R ! Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. Safety precaution RadioFans.CN 收音机爱 好者资料库 1-3 KS-FX725R Press the eject button in the lower right part of the front panel. Remove the front panel assembly from the body. 1. Removing the front panel assembly (See Fig.1) Prior to performing the following procedure, remove the front panel assembly. Release the four joints a on both sides of the front chassis assembly and remove the front chassis assembly toward the front. 1. Removing the front chassis assembly (See Fig.2 , 3) Disassembly method Fig.1 Fig.2 Fig.3 Front panel assembly Eject button Joint a Joint a Front chassis assembly Front chassis assembly Heat sink Joint a Joint a RadioFans.CN 收音机爱 好者资料库 1-4 KS-FX725R Remove the three screws A on the left side of the body. 1. Removing the heat sink (See Fig.4) Prior to performing the following procedure, remove the front panel assembly, the front chassis assembly and the heat sink. Turn over the body and unjoint the five joints b with the bottom cover and the body using a screwdriver. 1. Removing the bottom cover (See Fig.5 , 6) When disengaging the joint c using a screwdriver, do not damage or break the board. CAUTION: Fig.4 Fig.5 Fig.6 Heat sink AA Joint b Joint b Joint c Joint b Joint b Joint c Bottom cover Bottom cover Rear panel Rear panel 1-5 KS-FX725R Prior to performing the following procedure, remove the front panel assembly, the front chassis assembly, the heat sink and the bottom cover. Remove the screw B, the three screws C and the two screws D attaching the rear bracket on the back of the body. Remove the rear panel. Remove the two screws E attaching the main board on the bottom of the body. Disconnect connector CP401 on the main board in the direction of the arrow. 1. 2. Removing the main board (See Fig.7 , 8) Prior to performing the following procedure, remove the front panel assembly, the front chassis assembly, the heat sink, the bottom cover and the main board. Remove the four screws F attaching the cassette mechanism section on the back of the top chassis. 1. Removing the cassette mechanism section (See Fig.9) Fig.7 Fig.8 Fig.9 Rear panel B D D C C Main board E E CP401 Cassette mechanism section FF FF Top chassis 1-6 KS-FX725R Prior to performing the following procedure, remove the front panel assembly. Remove the four screws G attaching the rear cover on the back of the front panel assembly. Unjoint the ten joints d with the front panel and the rear cover. Remove the control switch board on the back of the front panel. 1. 2. 3. Removing the control switch board (See Fig.10 12) Fig.10 Fig.11 Fig.12 GG GG Rear cover Joint d Joint d Joint d Joint d Front panel Rear cover Front panel Control switch board 1-7 KS-FX725R Remove the screw A attaching the reinforce bracket on the bottom of the body. To release joint a, turn and detach the reinforce bracket from the side bracket assembly as shown in Fig.2 1. 2. Removing the reinforce bracket (See Fig.1 and 2) Turn the mode gear to set to RVS play or subsequent mode. Remove the cassette guide from the main chassis while releasing each two joint tabs b in the direction of the arrow. 1. 2. Removing the cassette guide (See Fig.3) Remove the screw B on the upper side. Unsolder the wires on the under side of the head board, if necessary. 1. Removing the head board (See Fig.4) Prior to performing the following procedures, turn the mode gear on the bottom of the body until the respective part comes to the EJECT position (Refer to Fig.1). REFERENCE: When reassembling, twist the wires by turning the head board twice remarked c and pass through the notch d as shown in Fig.4. REFERENCE: Head board Fig.1 Fig.2 Fig.4Fig.3 Mode gear Reinforce bracket Reinforce bracket Joint a Cassette guide Tab b Tab b B Head board notch d c Soldering A 1-8 KS-FX725R Check the mode is set to EJECT. Push down the front part of the cassette holder and move in the direction of the arrow to release the joint f. Move the rear part of the cassette hanger assembly in the direction of the arrow to release it from the two joint bosses g. Release the holder stabilizer spring from the hooks h and i, then pull out from the cassette hanger assembly. Bring up the rear side of the cassette hanger assembly to release the joint j and k. Pull out the cassette catch from the cassette hanger assembly. 1. 2. 3. 4. 5. Removing the cassette hanger assembly / cassette holder (See Fig.6 to 9) Remove the E-washer attaching the load arm. Move the load arm in the direction of the arrow and release the joint e on the cassette catch. 1. 2. Removing the load arm (See Fig.5) Fig.5 Fig.6 Fig.7 Fig.9 Fig.8 Load arm E-washer Joint e Cassette holder assembly Cassette holder assembly Side bracket Joints f Cassette holder assembly Cassette hanger assembly Cassette hanger assembly Cassette hanger assembly Boss g Boss g Cassette hanger assembly Cassette stabilizer spring Hook i Hook k Hook h Hook j Cassette holder assemblyCassette catch 1-9 KS-FX725R Remove the screw C attaching the side bracket assembly. Detach the front side of the side bracket assembly upward and pull out forward to release the joint l and m in the rear. 1. 2. Removing the side bracket assembly (See Fig.10 to 12) When reassembling, make sure that the boss n of the main chassis is set in the notch of the load rack under the side bracket assembly. Do not reattach the load rack on the boss n. CAUTION: After reattaching the side bracket assembly, confirm operation. CAUTION: Fig.11 Fig.12 Fig.10 C Side bracket assembly Side bracket assembly Joint l Joint m Side bracket assembly Boss n Load rack Boss n Load rack Joint l Joint m 1-10 KS-FX725R Remove the polywasher and pull out the pinch arm (F) assembly. Remove the compulsion spring. 1. 2. Removing the pinch arm (F) assembly (See Fig.13 and 14) Remove the polywasher and pull out the pinch arm (R) assembly. 1. Removing the pinch arm (R) assembly (See Fig.13 and 15) Move the slide chassis assembly in the direction of the arrow to release the two joints o and remove from the main chassis. Remove the rack link. 1. 2. Removing the slide chassis assembly (See Fig.16 and 17) When reassembling, first reattach the rack link, and next fit the boss p and hook q of the slide chassis assembly to the hole of the main chassis, and engage the two joints o. CAUTION: It is not necessary to remove the head and the tape guide. REFERENCE: Fig.13 Fig.17 Fig.14 Fig.15 Fig.16 Polywasher Polywasher Pinch arm (F) assembly Pinch arm (R) assembly Polywasher Pinch arm (F) assembly Compulsion spring Pinch arm (R) assembly Polywasher Slide chassis assembly Joint o Joint o Boss p Hook q Rack link Head Tape guide 1-11 KS-FX725R Remove the band attaching the wire to the head. Remove the two screws D, the head and the head support spring. Remove the pinch arm spring from the tape guide. Remove the tape guide and the pinch spring arm. 1. 2. 3. 4. Removing the head / tape guide (See Fig.18 and 19) Remove the belt at the bottom. Remove the two polywashers on the upper side. Pull out each flywheel assembly downward. 1. 2. 3. Removing the flywheel assembly (F) oi hj KS-FX725R 1 (/ ) 2 3 DISP () 4 TP ( ) RDS ( ) 5 PTY ( ) 6 7 FM AM DAB ( ). 8 TAPE 23 9 0 () p / 4 SSM, . q SEL () w e RPT () ( ). r RND () 5 ( ) MO (). t SCM ( ) y CD-CH (- -) u ( ) i o SCM ( ) ; MO (), ST () a RND () s RPT () d LOUD () f FM FM1, FM2, FM3 g BEAT, SOFT, POP h j RDS AF, EON, REG, TP, PTY k CD-CH (- -) l RU02-04KS-FX725R_F525EEf.pm64/12/01, 2:01 PM3 4 13245 w 7 89p yuretq? 6 DISP SCAN LOUD DISP SCAN LOUD as ?f doi g ; h Multi Music Scan KS-F525 1 (/ ) 2 3 LOUD () 4 DISP () 5 SCAN 6 7 TAPE 8 FM 9 0 () p / 4 SSM, . q SEL () w e RPT () r MO () t SCM ( ) y AM u ( ) i o SCM ( ) ; MO (), ST () a RPT () s LOUD () d FM FM1, FM2, FM3 f BEAT, SOFT, POP g h RU02-04KS-FX725R_F525EEf.pm613/12/01, 3:08 PM4 5 1 . : 2 , . , . 2 . , (FM ), 6 15. , , 16 18. KS-FX725R: , - - 27 28. 29. DAB ( ) 30 33. TAPE KS-FX725RKS-F525 MO TP TP RDS PTY DISP RDS PTY DISP 891011127 DAB 1 3 22 3 . 4 , . (C 19 22). . “” , . , , . . , “SEE YOU” (“ ”). : ( 23). . KS-FX725RKS-F525 . . RU05-05KS-FX725R_F525EEf.pm64/12/01, 2:01 PM5 6 MO TP TP RDS PTY DISP RDS PTY DISP 891011127 DAB . : 1 (FM1 3, AM). : FM (FM1, FM2, FM3). , FM. FM1FM2FM3AM KS-FX725RKS-F525 AM FM1FM2FM3 2 . , , . , , , , . : FM1 FM2 : 87,5 108,0 FM3 : 65 74 , . 4 , . KS-FX725R KS-F525 ( 25) . RU06-09KS-FX725R_F525EEf.pm64/12/01, 2:02 PM6 7 MO MORND : 1 (FM1 3, AM). : FM (FM1, FM2, FM3). , FM. 2 4 , “M ()” . 3 , , “M” . , 5 . , ( 50 (87,5 108 ), 30 (65 74 ) FM 9 AM MW/LW) , . FM: MO RND ( KS-FX725R) MO ( KS-F525) , FM. MO. MO, , , , ( ST () ). , , . FM1FM2FM3AM AM FM1FM2FM3 KS-FX725R KS-F525 . FM . KS-FX725R KS-F525 4 , . , . RU06-09KS-FX725R_F525EEf.pm64/12/01, 2:02 PM7 8 FM , (FM1, FM2 FM3). 1 ( ) 6 ( ). , 1. 6 (FM1, FM2, FM3 AM) . .: , FM 88,3 1 FM1 1 (FM1 3, AM), ( FM1). : FM: SSM ( ) , FM, FM: SSM 6 FM FM (FM1, FM2 FM3). 1 FM (FM 1 3), FM. 2 2 . FM1FM2FM3AM KS-F525 KS-FX725R “SSM” , , . FM1FM2FM3AM AM FM1FM2FM3 KS-FX725R KS-F525 FM1FM2FM3 RU06-09KS-FX725R_F525EEf.pm64/12/01, 2:02 PM8 9 . , . , “ ” 8 9. 1 (FM1 3, AM). 2 (1 6) , . (t KS-F525) SCAN () , . , , 5 ( ), , . , , . 2 ( 88,3 ). 3 ( 1) 2 . 4 , . : , . , (, ). , . FM1FM2FM3AM SCANSCAN AM FM1FM2FM3 KS-FX725R KS-F525 “P 1” . 4 , . , . RU06-09KS-FX725R_F525EEf.pm64/12/01, 2:02 PM9 10 RDS RDS, , . , , 1 TP RDS ( / ). : 1 AF , REG . , “off” (). , . , . 2 AF, REG. , “on” (). , , . 3 AF, REG. . TP TP RDSRDS KS-FX725R. RDS RDS ( ) FM . , , , , , . RDS , “Enhanced Other Networks” (“ ”). EON FM . , , , , , , kacceta. RDS : (- ) TA ( ) PTY ( ) (- ) FM, RDS, . , , . ( ). - RDS PI ( ) AF ( ). REG AF 1 2 3 RU10-15KS-FX725R_F525EEf.pm66/12/01, 4:24 PM10 11 , “TRAFFIC” ( ), FM. TA ( 14), . , TP RDS. PTY PTY , FM, PTY PTY , PTY . PTY , 12, 5 . PTY, PTY . 4 , PTY. “SEARCH” (), PTY. PTY, PTY. 7 PTY , PTY , PTY . ( PTY). PTY PTY , PTY , FM. PTY . PTY, PTY . . (PTY: ) () ( FM, ). , , . TP RDS , FM, ( ), . , . 4 , . “SEARCH” (), . , . 7 , TP RDS, . ( P). PTYPTY TP TP RDSRDS 1, C 1, D 1, B 1, E 1, A RU10-15KS-FX725R_F525EEf.pm66/12/01, 4:24 PM11 12 6 , . 6 (1 6). , . , 13. 1 SEL () 2 , PSM. (PSM: 24). 2 “PTY SRCH ()” , . 3 PTY. ( 15). . , . POP M 123 ROCK MEASY M 456 CLASSICSAFFAIRSVARIED PTY PTY , . “NEWS” () , PTY . 1 SEL () 2 , PSM. (PSM: 24). 2 “PTY STBY ()” , . 3 PTY. ( 15). . 4 SEL (), . RU10-15KS-FX725R_F525EEf.pm66/12/01, 4:24 PM12 13 4 2 , PTY , . . 5 SEL (), . 1 PTY ( ) 1 , FM. 2 PTY, (1 6). PTY 5 . PTYPTY 891011127 891011127 PTY . .: “ROCK M” 2 , PTY , , . , PTY , , . : PTY . RDS , , . , RDS, . , AF , ( ). , , . - . “ (PSM)” 23 24. 1 SEL () 2 , PSM. 2 4 , “P()-SEARCH” . 3 , “ON” (). . 4 SEL (), . , “OFF” () 3, . RU10-15KS-FX725R_F525EEf.pm66/12/01, 4:24 PM13 14 FM (PS NAME), (FREQ) (CLOCK), - FM RDS. “ (PSM)” 23 24. 1 SEL () 2 , PSM. 2 4 , “DISPMODE ( ). ” 3 , (“PS NAME” ( ), “FREQ” () “CLOCK” ( ). 4 SEL (), . : DISP (), , FM RDS. : . (PS NAME) (FREQ) (PTY) (CLOCK) . , . “ (PSM)” 23 24. 1 SEL () 2 , PSM. 2 4 , “TA VOL ( )” . 3 , . “VOL 00” “VOL 50” . 4 SEL (), . , CT ( ) RDS. , . “ (PSM)” 23 24. 1 SEL () 2 , PSM. 2 4 , “AUTO ADJ ( )” . 3 , “OFF” (). . 4 SEL (), . , “ON” () 3, . : 2 , . 2 , . RU10-15KS-FX725R_F525EEf.pm66/12/01, 4:24 PM14 15 RELIGION:, , , PHONE IN:, , TRAVEL: , , LEISURE:, , , , . JAZZ: COUNTRY: NATION M: OLDIES: - FOLK M: DOCUMENT: , , PTY NEWS: AFFAIRS: , INFO:, SPORT: EDUCATE: DRAMA: CULTURE: SCIENCE: VARIED: , POP M:- ROCK M:- EASY M: LIGHT M: CLASSICS: OTHER M: WEATHER: FINANCE: , , . CHILDREN: SOCIAL: - RU10-15KS-FX725R_F525EEf.pm66/12/01, 4:24 PM15 16 1 (). 1 . , . , ( ). : , TAPE 23 , . 2 . TAPE () 23, () (). MO TP TP RDS PTY DISP RDS PTY DISP 891011127 DAB KS-F525KS-FX725R 0. , . . , ( ). , 0, . , TAPE () 23. . : , . KS-FX725R KS-F525 1 , . , , . 4 1 , . , . RU16-18KS-FX725R_F525EEf.pm66/12/01, 4:24 PM16 17 “” . TAPE () 23 0 2 . 5 “NO EJECT” ( ), “” . “” ,