Casio_AP-25,_28_Service_Manual电路图.pdf

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1、AP-25/28 ELECTRONIC KEYBOARD AP-25/28 APR. 2001 RadioFans.CN 收音机爱 好者资料库 INDEX 1 CONTENTS Safety Notice. 1 Specifications . 2 Block Diagram . 3 Replacement of the Keyboard. 4 Circuit Description . 6 Exploded View . 7 Parts List . 9 Schematic Diagrams . 13 SAFETY NOTICE CAUTION! Danger of explosion if

2、 battery is incorrectly replaced. Replace only with the same of equivalent type recommended by the appliance manufacturer.Discard used batteries according to manufacturers instructions. RadioFans.CN 收音机爱 好者资料库 2 SPECIFICATIONS GENERAL Models:AP-25/AP-25V/AP-28/AP-28V Keyboard:88 piano keys (with tou

3、ch response) Polyphony:64 notes, maximum Tones:8 Digital Effects:Reverb (4 types), Chorus Demo Tunes: Number of Tunes: 8 Playback: Repeat (all tunes, one tune) Memory: Operations: Real-time recording, playback Capacity: Approximately 2,500 notes (one song) Memory Backup: Built-in lithium battery (Ba

4、ttery Life: 5 years) Pedals:AP-25/AP-25V: Damper, Soft/Sostenuto (Selectable) AP-28/AP-28V: Damper, Soft, Sostenuto Other Functions: Metronome: Beat (6 types), Tempo ( = 30 to 255) Touch Select: 3 types, off Transpose: 1 octave (F# to C to F) Tuning: A4 = 440Hz 50 cents (adjustable) MIDI:16 multi-ti

5、mbre receive Input/Output: Headphones: Stereo standard jacks 2 Output Impedance: 470 Output Voltage: 18V (RMS) MAX MIDI (OUT) (IN) Speakers: 12cm 2 (Output: 20 W + 20 W) Power Supply:AP-25/AP-28: 120V AP-25V/AP-28V: 220-240V Power Consumption:AP-25/AP-28: 60W AP-25V/AP-28V: 60W Dimensions: CELVIANO

6、(without stand): 137.0 42.5 19.0 cm (53 15/16 16 3/4 7 1/2 inch) CELVIANO: 139.0 47.0 81.0 cm (54 3/4 18 1/2 31 7/8 inch) Weight: CELVIANO (without stand): approximately 34 kg (74.8 lbs) CELVIANO:approximately 44 kg (96.8 lbs) (AP-25/AP-25V) approximately 44 kg (96.8 lbs) (AP-28/AP-28V) Design and s

7、pecifications are subject to change without notice. AP-25 and AP-28 have hardwired power cords. AP-25V and AP-28V have detachable power cords. RadioFans.CN 收音机爱 好者资料库 3 BLOCK DIAGRAM FI0 10 SI0 10 CPU uPD703107AGJ103UEN LSI 6 PEDAL MIDI INOUT ROM (4MB) MR27V3202E-81MA LSI 2 Keyboard Controller TC190

8、C020AF LSI 1 EA0 15 MA0 20 MD0 15 ED4 19 Keyboard KC0 7 M-INM-OUTANI0 2 DSP uPD914AGM-3ED LSI 3 RAM (128KB) CY62126BVLL-55ZI LSI 4 RAM (128KB) CY62126BVLL-55ZI LSI 5 CA1 16 CA1 5 CA1 4 3VD0 15 3VD0 15 3VD0 15 Power Switch Power Transformer T101 Voltage Selector AVCC VDD +15V +5V Power Supply IC401:

9、NJM78M05FA IC402: NJM78M15FA Reset IC RN5VD2BAA IC 13 D/A Converter PCM69BU/2K IC 2 SYCK BCK WCK Mute Power Amp. LM4765T IC403 Main Volume Filter IC1, IC405, IC406 HEADPHONE SPSP 4 REPLACEMENT OF THE KEYBOARD 1) Replacement of the white key / black key 2) Replacement of the hammer 3) Replacement of

10、the contact rubber 4) Other precauions When the the keyboard needs to be replaced, make sure to check the key touch before replacing it. 1) Replacement of the White key / Black key 1. Expand the rear end of the white key/black key by a pair of tweesers and slide it forward horizontally. 2. Apply pro

11、per amount of grease to the inside of the Guide and the front end of the key as well as the rear end of the key. * Take extra care of the quantity of the grease, which can easily change the key touch. * It is recommended to refer to the quantity of the grease which is applied to the neighboring keys

12、. 3. After replacing the key, put the front end of the key back into the Guide and slide it backward horizontally. * Take extra care not to make any scratches in the inside of the front end of the key and the Guide. 2) Replacement of the Hammer 1. If no jig is available when disassembling, use a dri

13、ver and a big clip. Then, lift the hammer up and remove it like a lever. 2. Apply the grease (G501) thinly to the top and bottom of the front end as well as the fulcrum of the hammer. * It is recommended to refer to the quantity of the grease which is applied to the other hammers when disassembling.

14、 Guide White key Grease Clip Driver Grease 5 Jig (lumber) 10 mm 10 mm Guide White key Screw Contact rubber PCB 100 g 105 g 3) Replacement of the contact rubber. (A Jig is necessary) Since the contact rubber is replaced with the keyboard (both white keys and black keys) turned upside down, a jig is n

15、ecessary to prevent from various troubles caused by the fact that the keys are pushed down. Precautions when replacing the contact rubber 1. Make sure that the keys are NOT pushed down. 2. Make sure that the contact rubber is attached to the frame in the right position. 3. When assembling, take extr

16、a care that the contact rubber can often be slipped or twisted at the ends of the rubber itself and the PCB. 4. Make sure that the screw is fixed vertically to the PCB since the key PCB is fixed at an angle (see the right figure). 5. The key touch may change if the above precauions are not followed.

17、 4) Other precautions Initial load inspection of the keyboard 1. Check if the keys go down with the load put on them (100g for the white key and 105g for the black key). Maintenance of the keyboard unit 1. Never keep the keyboard unit upside down, since the contact rubber may be stuck to the PCB. 6

18、CIRCUIT DESCRIPTION KEY MATRIX KC0KC1KC2KC3KC4KC5KC6KC7 FI0A0 1A0 # 1B0 1C1 1C1 # 1D1 1D1 # 1E1 1 SI0A0 2A0 # 2B0 2C1 2C1 # 2D1 2D1 # 2E1 2 EI1F1 1F1 # 1G1 1G1 # 1A1 1A1 # 1B1 1C2 1 SI1F1 2F1 # 2G1 2G1 # 2A1 2A1 # 2B1 2C2 2 FI2C2 # 1D2 1D2 # 1E2 1F2 1F2 # 1G2 1G2 # 1 SI2C2 # 2D2 2D2 # 2E2 2F2 2F2 #

19、2G2 2G2 # 2 FI3A2 1A2 # 1B2 1C3 1C3 # 1D3 1D3 # 1E3 1 SI3A2 2A2 # 2B2 2C3 2C3 # 2D3 2D3 # 2E3 2 FI4F3 1F3 # 1G3 1G3 # 1A3 1A3 # 1B3 1C4 1 SI4F3 2F3 # 2G3 2G3 # 2A3 2A3 # 2B3 2C4 2 FI5C4 # 1D4 1D4 # 1E4 1F4 1F4 # 1G4 1G4 # 1 SI5C4 # 2D4 2D4 # 2E4 2F4 2F4 # 2G4 2G4 # 2 FI6A4 1A4 # 1B4 1C5 1C5 # 1D5 1D

20、5 # 1E5 1 SI6A4 2A4 # 2B4 2C5 2C5 # 2D5 2D5 # 2E5 2 FI7F5 1F5 # 1G5 1G5 # 1A5 1A5 # 1B5 1C6 1 SI7F5 2F5 # 2G5 2G5 # 2A5 2A5 # 2B5 2C6 2 FI8C6 # 1D6 1D6 # 1E6 1F6 1F6 # 1G6 1G6 # 1 SI8C6 # 2D6 2D6 # 2E6 2F6 2F6 # 2G6 2G6 # 2 FI9A6 1A6 # 1B6 1C7 1C7 # 1D7 1D7 # 1E7 1 SI9A6 2A6 # 2B6 2C7 2C7 # 2D7 2D7

21、# 2E7 2 FI10F7 1F7 # 1G7 1G7 # 1A7 1A7 # 1B7 1C8 1 SI10F7 2F7 # 2G7 2G7 # 2A7 2A7 # 2B7 2C8 2 FI KC SI LSI HG52E35P Second contactFirst contact 12 7 EXPLODED VIEW CABINET 1 14 26 27 2 3 8 9 9 16 28 10 24 11 17 23 4 13 12 7 6 5 40 41 42 15 18 19 20 21 22 25 37 39 39 43 46 44 36 47 45 38 8 STAND x2 x2

22、 x4 x2 x1 x14 x2 x2 34 323335 293031 Notes:This parts list does not include the cosmetic parts, which parts are marked with item No. R-X in the exploded view. Contact our spare parts department if you need these parts for refurbish. 1.Prices and specifications are subject to change with- out prior n

23、otice. 2.As for spare parts order and supply, refer to the GUIDEBOOK for Spare parts Supply, published seperately. 3.The numbers in item column correspond to the same numbers in drawing. PARTS LIST AP-25/28 AP-25, AP-28 PARTS PRICE LIST ItemCode No.Part NameSpecificationQPrice CodeRRemarks Main PCB

24、11005 2246PCB ASSY/M427-MA1MTK-M241553*1(M427)1EFA BT13815 0679BATTERY/LITHIUMCR2032/1HF11AGB IC12114 1218IC/MONOLITHICNJM2068MD(T1)1ADB IC102105 5824IC/L-MOSTC7SH32FU(TE85L)1ABB IC112105 3773IC/L-MOSTC7SH08FU(TE85L)1ABB IC122105 3696IC/L-MOSTC7SH04FU(TE85L)1ABB IC131004 7449IC/MOSRN5VD28AA-TR1ACB I

25、C142105 5712IC/L-MOSTC7S04FU(TE85L)1ABB IC21000 8350LSIPCM69BU/2K1BAA IC31002 1416IC/MOSRN5RF35BA-TR1AEB IC4,IC92105 6389IC/L-MOSTC7SET04FU(TE85L)2ADB IC52105 6083IC/L-MOSTC7WU04FU(TE12L)1ADB IC62105 6394IC/L-MOSTC7SET08FU(TE85L)1ABB IC7,IC82105 6576IC/C-MOSTC74LCX245FT(EL)2AFB LSI12012 5987LSITC190

26、C020AF-0011BCA LSI21004 9737LSIMR27V3202E-81MA-N1BTA LSI31005 4502LSIUPD914AGM-3ED1CKA LSI41004 3417LSICY62126BVLL-55ZIT2BRA LSI61004 9738LSIUPD703107GJ014-UEN1CEA Q12259 2702TRANSISTOR2SB1188T100Q1ABB Q22253 0715TRANSISTOR2SD1664T100R1AAB Q32250 1162TRANSISTOR2SA1576AT106R1AAB Q42250 1605TRANSISTOR

27、2SC4081T106S1AAB Q52250 1162TRANSISTOR2SA1576AT106R1AAB X11004 7439OSCILLATOR/CERAMICCSTCV16.00MXJ0C4-T1ACB X21002 1357OSCILLATOR/CRYSTALDSX151GA-22.5792M1ASB X31004 7438OSCILLATOR/CERAMICCSTCR5M00G35-R01ACB Power supply PCB 21005 2244PCB ASSY/M427-PS2MTK-M241554*1(M427)1CEA 120V area 21005 4065PCB

28、ASSY/M427-PS2MTK-M241554*2(M427)1CEA 230V area D401-D4041003 6785DIODE2A02B4AAB D405-D4082390 3022DIODE3BZ41(LC6-15)4ADB D409-D412, D414-D415 2315 3132DIODE1SS133T-776AAB D4131003 8115DIODE/ZENERMTZJT-775.6B1AAB D4162390 2828DIODERB441Q-40T-771AAB F4011005 2231FUSE51MS010L1ACA 120V area F4011005 402

29、9FUSE50T010H1ACA 230V area F402,F4031005 2230FUSE51MS040L2ACA 120V area F402,F4031005 4030FUSE50T040H2ACA 230V area IC4012114 5796IC/MONOTITHICNJM78M05FA1AEB IC4022114 5794IC/MONOTITHICNJM78M15FA1AEB IC4031004 3418IC/MONOTITHICLM4765T1BCB IC4042114 1421IC/PHOTO COUPLERPC900V1AKB IC405-IC4062121 0072

30、IC/MONOTITHICNJM2068DD2ADB J4013501 4816JACK/DINYKF51-50511AHB Q401-Q403Q4052250 1627TRANSISTOR2SC1740STPS4AAB Notes: Q - Quantity per unit R - Rank - 10 - ItemCode No.Part NameSpecificationQPrice CodeRREMARKS PS12,PS3,PS4M PCBs 31005 4068PCB ASSY/M437-PS1TK-M341450*2(M427)1CLB 120V area 31005 4069P

31、CB ASSY/M437-PS1TK-M341450*3(M427)1CLB 230V area 41005 2252SWITCH ASSY/POWERTK-M341447*1(M427)1AYC 51005 2253PCB ASSY/M427-PS3MTK-M341444*1(M427)1CEB 61005 2251PCB ASSY/M427-PS4MTK-M341445*1(M427)1CEB 71005 2248PCB ASSY/M427-PS5MTK-M341446*1(M427)1CEB F4001004 7508FUSE50T025H1ACA 230V area F4001004

32、7399FUSE51MS032L1ACA 120V area J402,J4031004 7514JACK/PHONEYKB22-50782AGA 1005 2243PCB ASSY/FRONT BOARDTK-M241577*1(M427)1CEB Other electrical parts 81005 4031TRANSFORMERTE-427-1M11CWB 120V area 81005 4032TRANSFORMERTE-427-2M11CWB 230V area 91005 2227SPEAKERS12J99A2CDC 1004 75932P-CONNECTOR-M437NWEH

33、-2P-45-M4372ABC 1005 2225CORE/FERRITETFCK-16-8-132AQC 1005 2224CORE/FERRITETFCK-23-11-141ARC Keyboard unit 101004 6083KEY ASSYM141175*1 TK(MLMP2)1EMB 116927 4030BLACK KEYM140784-136AGA 121005 2300HAMMER ASSY/BLACK KEY (R)M341438*1 TK(MLMP)9BHB 121005 2301HAMMER ASSY/BLACK KEY (G)M341439*1 TK(MLMP)9B

34、HB 121005 2309HAMMER ASSY/BLACK KEY (BK) M341440*1 TK(MLMP)9BHB 121005 2310HAMMER ASSY/BLACK KEY (BL) M341441*1 TK(MLMP)9BHB 131005 2296HAMMER ASSY/WHITE KEY (R)M341434*1 TK(MLMP)13BHB 131005 2297HAMMER ASSY/WHITE KEY (G)M341435*1 TK(MLMP)13BHB 131005 2298HAMMER ASSY/WHITE KEY (BK) M341436*1 TK(MLMP

35、)13BHB 131005 2299HAMMER ASSY/WHITE KEY (BL) M341437*1 TK(MLMP)13BHB 146928 4470RUBBER/CONTACTM240957-21AEA 156928 4480RUBBER/CONTACTM240958-26AHA 166928 4490RUBBER/CONTACTM240959-21AHA 176927 4090WHITE KEY/AM140789-17AHA 186927 4100WHITE KEY/BM140790-18AIA 196927 4040WHITE KEY/CM140783-17AHA 206927

36、 4050WHITE KEY/DM140785-17AIA 216927 4060WHITE KEY/EM140786-17AHA 226927 4070WHITE KEY/FM140787-17AIA 236927 4080WHITE KEY/GM140788-17AHA 246927 4110WHITE KEY/SAM140792-11AMA 256927 4120WHITE KEY/SCM140791-11ANA 266928 5460PCB ASSY M887T-KY1MM240951A*11BOC 276928 5470PCB ASSY M887T-KY2MM240952A*11BT

37、C 286928 5480PCB ASSY M887T-KY3MM241019A*11BMC 6927 4011CAP/GUIDE/WHITE KEYM340958A-113AEC 6927 4020CAP/GUIDE/BLACK KEYM340959-136AAC 1005 4481CHASSIS SUB ASSYM140831E*11CVC Notes: Q - Quantity per unit R - Rank - 11 - ItemCode No.Part NameSpecificationQPrice CodeRREMARKS Stand 291005 2239FOOT SUB A

38、SSYM341409A*1(M427)1CTC Left 301005 2238FOOT SUB ASSYM341409A*2(M427)1CTC Right 311005 2237PEDAL-SUB ASSYM241584A*1(M427)1CPC AP-28/3 Pedal 311005 4064PEDAL-SUB ASSYM241584A*2(M427)1CPC AP-25/2 Pedal 321005 2236ST-SIDE SUB ASSYM341472*1(M427)1CVC Left 331005 2235ST-SIDE SUB ASSYM341472*2(M427)1CVC R

39、ight 341005 2221SCREW SETM241589-11BNX 351005 2220BT-BACK-427M2411392-11CEX AC cord 361005 4071AC-CORD-ASSYTK-M341449*21AWC 120V area 361005 4067INLET ASSY/2P-ACTK-M341448*1(M437)1ATC 230V area 1004 5709CORD SETUC2NC-M001A1AKC USA, Canada 1004 5706CORD-SETEC2NC-M001A1AMC Europe 1004 5707CORD-SETBC2N

40、C-M001A1BDC UK Other parts 371005 2240COVER ASSY/KEYTK-M241573*1(M427)1COX 381004 5692SHAFTM441204-11BIC 396924 5140GEAR42470021002ACC 401005 2232KNOB/VOLUMEM341402-11AEC 411004 7851BUTTON/RUBBERM241515-11ACC 426924 5260BUTTON/POWERM340318-11AAC 431005 2241BOARD ASSY/TOPTK-M241574*1(M427)1DEX 441001

41、 4480STOPPERM440862A-11AAC 451005 2234STAND ASSY/MUSICTK-M241576*1(M427)1CHX 451005 4066STAND ASSY/MUSICTK-M241576*2(M427)1CVX AP-25 USA, Canada 461005 2242PANEL ASSY/CNTK-M341456*1(M427)1ARX AP-25 461005 4070PANEL ASSY/CNTK-M341456*2(M427)1AIX AP-28 471005 2243PCB ASSY/FRONT BOARDTK-M241577*1(M427)

42、1CEB Notes: Q - Quantity per unit R - Rank - 12 - 13 SCHEMATIC DIAGRAMS MAIN PCB JCM427-MA1M 14 I/O and POWER SUPPLY(120 V) PCB JCM427-PS1/PS2M/PS3M/PS4M/PS5M 15 I/O and POWER SUPPLY(230 V) PCB JCM427-PS1/PS2M/PS3M/PS4M/PS5M 16 KEYBOARD PCB JCM887T-KT1M 17 KEYBOARD PCB JCM887T-KT2M 18 KEYBOARD PCB JCM887T-KT3M CASIO TECHNO CO.,LTD. Overseas Service Division Nishi-Shinjuku Kimuraya Bldg. 1F 5-25, Nishi-Shinjuku 7-Chome Shinjuku-ku, Tokyo 160-0023, Japan