Sony MDS-JE770 manual

MDS-JE770 SPECIFICA TIONS SERVICE MANUAL MINIDISC DECK Model Name Using Similar Mechanism MDS-S50 MD Mechanism T ype MDM-7A Optical Pick-up T ype KMS-260B/260E AEP Model UK Model E Model F oreign patents licensed form Dolby Laboratories Licensing Corporation. — Continued on next pa g e — V er 1.0 2001. 05 9-873-890-11 2001E0200-1 © 2001.5 Sony[...]

2 MDS-JE770 SELF-DIA GNOSIS FUNCTION The self-diagnosis function consists of error codes for customers which are displayed automatically when errors occur , and error codes which show the error history in the test mode during servicing. For details on how to view error codes for the customer , refer to the following box in the instruction manual. F[...]

3 MDS-JE770 ITEMS OF ERR OR HISTOR Y MODE ITEMS AND CONTENTS Selecting the T est Mode Displa y op rec tm op play tm spdl rp tm retry err total err err history retry adrs er refresh tm change op change Histor y Displays the total recording time. When the total recording time is more than 1 minute, displays the hour and minute When less than 1 minute[...]

4 MDS-JE770 P ARTS No. 4-233-025-6 s 4-236-047-1 s 4-233-025-8 s Description T able of Error Codes Error Code 10 12 20 21 22 23 24 30 31 40 41 42 43 50 51 Could not load Loading switches combined incorrectly T imed out without reading the top of PTOC Could read top of PTOC, but detected error T imed out without accessing UTOC T imed out without rea[...]

5 MDS-JE770 SECTION 1 SER VICE NO TES This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior . Laser component in this product is capable of emitting radiation exceeding the limit for Class 1. CA UTION Use of controls or adjustments or performance of procedures other than those spe[...]

6 MDS-JE770 JIG FOR CHECKING BD BO ARD W A VEFORM The special jig (J-2501-196-A) is useful for checking the waveform of the BD board. The names of terminals and the checking items to be performed are shown as follows. GND : Ground I+3V : For measuring IOP (Check the deterioration of the optical pick-up laser) IOP : For measuring IOP (Check the dete[...]

7 MDS-JE770 Iop D A T A RECORDING AND DISPLA Y WHEN OPTICAL PICK-UP AND NON-V OLA TILE MEMOR Y (IC195 OF BD BO ARD) ARE REPLA CED The Iop value labeled on the optical pick-up can be recorded in the non-volatile memory . By recording the value, it will eliminate the need to look at the value on the label of the optical pick-up. When replacing the op[...]

8 MDS-JE770 OPTICAL PICK-UP BLOCK TYPE DISCRIMINA TION There are two types of the optical pick-up block in this model. These are compatible except for the laser power . Check the type of the optical pick-up block before replacement. Ajdust following items after replacing the optical pick-up block. • 5-6-2. Laser Power Check (See page 28) • 5-10[...]

9 MDS-JE770 CHECKS PRIOR T O PARTS REPLA CEMENT AND ADJUSTMENTS Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent. Details of the procedures are described in “5 Electrical Adjustments”. • 5-6-2. Laser power check (see page 28) • 5-6-3. Iop Compare (see page 28) • 5-6-4. Auto C[...]

10 MDS-JE770 Fig. 2 Reading the T est Mode Displa y (During playbac k) @@###**$$ Fluorescent display tube display @@ : Parts No. (name of area named on T OC) ### : Cluster ** : Sector $$ : T rack mode (T rack information such as copyright infor- mation of each part) RETR Y CA USE DISPLA Y MODE • In this test mode, the causes for retry of the unit[...]

11 MDS-JE770 Hexadecimal Bit Binar y Higher Bits Lo wer Bits 84218421 b7 b6 b5 b4 b3 b2 b1 b0 00000001 00000010 00000100 00001000 00010000 00100000 01000000 10000000 Hexa- decimal Details 01 02 04 08 10 20 40 80 Emphasis OFF Monaural This is 2-bit display . Normally 01. 01:Normal audio. Others:Invalid Audio (Normal) Original Copyright W rite prohib[...]

12 MDS-JE770 SECTION 2 GENERAL This section is e xtracted from instruction manual. Parts Identification The i tems ar e ar ranged in al phabet ical o rder . Refer to the pa ges in dicate d in pare nthese s ( ) fo r deta ils. Main unit MENU/ NO YES AMS CLEAR PUSH ENTER REC INPUT REC MODE EJECT ST ANDBY TIMER PHONES PHONE LEVEL PC LINK ON/OFF SKIP TI[...]

13 MDS-JE770 SECTION 3 DISASSEMBL Y 3-1. DISASSEMBL Y FLO W • This set can be disassembled in the order shown below . SET 3-2 UPPER CASE (408226) 3-3 FRONT P ANEL SECTION 3-4 MAIN BOARD 3-5 PT BOARD V OL-SEL BOARD (SP model) 3-6 MECHANISM DECK SECTION (MDM-7A) 3-7 O VER LIGHT HEAD (HR901) 3-11 OPTICAL PICK-UP (KMS-260B/260E) 3-7 BD BOARD 3-8 HOLD[...]

14 MDS-JE770 3-2. UPPER CASE (408226) 1 Two screws (CASE 3TP2) 1 Two screws (CASE 3TP2) 1 Screw (CASE 3TP2) 2 Case (408226) 3-3. FR ONT P ANEL SECTION 4 Three screws (+BVTP3x8) 4 Two screws (+BVTP3x8) 6 Front panel 5 Claw 5 Claw 1 Wire (flat type) (17core) (CN3 ) 2 Connector (CN390) 3 Connector (CN830)[...]

15 MDS-JE770 3-4. MAIN BO ARD 3-5. PT BO ARD , VOL-SEL BO ARD (SP model) 6 Two screws (+BVTP3x8) 4 Three screws (+BVTP3x8) 5 screw (+BVTP3x8 ) 3 Connector (CN400) 2 Wire (flat type) (23core) (CN1) 1 Wire (flat type) (27core) (CN2) 7 MAIN board 6 Two screws (+BVTP3x8) (SP model) 3 Three screws (+PTTWH M3) 2 Connector (CN990) (SP model) 1 Connector ([...]

16 MDS-JE770 3-6. MECHANISM DECK SECTION (MDM-7A) 3-7. O VER LIGHT HEAD (HR901), BD BO ARD 2 Two step screws (+BVTTWH M3) 2 Two step screws (+BVTTWH M3) 1 Harnes s 3 Mechanism deck 6 3 Head, over light (HP901) 4 Remove the solder (four portion) 4 Remove the solder (five portion) 5 Two screws (BTP2X6) 7 FLEXIBLE board (CN101) 8 BD board 1 Connector [...]

17 MDS-JE770 3-8. HOLDER ASSY 3-9. LO ADING MO T OR ASSY (M103) 5 3 6 Holder ASSY 2 Claw 4 Boss 4 Boss 1 Spring (holder), tension 2 Two screws (PWH1.7x2.5) 3 Motor ASSY, loading (M103) 1 Belt (loading)[...]

18 MDS-JE770 3 A A 1 Two screws (BTP2X6) 9 Two screws (PWH1.7X2.5) 0 Motor ASSY, sle d (M102) 7 Lever (CHG) 2 Guide (L) 6 Slider 8 Lever (head) 4 Slider (EJ) 5 Remove the claw. Shift the slider in the arrow direction. 1 FLEXIBLE board qa Optical pick-up (KMS-260B/260E) 7 Main shaft 6 Two screws (K2X6) 4 Screw (BTP2X6 ) 5 Base (BU-A) 3 Gear (SD) 2 S[...]

19 MDS-JE770 2 Spindle motor ASSY (M101) 1 Three screws (M1.7), tapping 3-12. SPINDLE MO TER ASSY (M101)[...]

20 MDS-JE770 Function name MENU/NO button YES button AMS Left or Right knob Push Function Cancel or move to top hierarchy Set Select Set submenu SECTION 4 TEST MODE 4-1. PRECA UTIONS FOR USE OF TEST MODE • As loading related operations will be performed regardless of the test mode operations being performed, be sure to check that the disc is stop[...]

21 MDS-JE770 Displa y AUTO CHECK Err Display TEMP ADJUS LDPWR ADJUS Iop Write Iop NV Save EF MO ADJUS EF CD ADJUS FBIAS ADJUS AG Set (MO) AG Set (CD) TEMP CHECK LDPWR CHECK EF MO CHECK EF CD CHECK FBIAS CHECK ScurveCHECK VERIFYMODE DETRK CHECK 0920 CHECK Iop Read Iop Compare ADJ CLEAR INFORMA TION CPLA Y1MODE CREC 1MODE Details Automatic self-diagn[...]

22 MDS-JE770 “ CPLAY1 MID ” t “ CPLAY1 OUT ” t “ CPLAY1 IN ” “ CREC1 MID ” t “ CREC1 OUT ” t “ CREC1 IN ” 4-5-1. Operating the Continuous Pla yback Mode 1. Entering the continuous playback mode 1 Set the disc in the unit. (Whichever recordable discs or discs for playback only are available.) 2 Rotate the l AMS L knob and dis[...]

23 MDS-JE770 Function G x M m REC MODE PLA Y MODE LEVEL/DISPLA Y/CHAR A REPEA T Contents Sets continuous playback when pressed in the STOP state. When pressed during continuous playback, the tracking servo turns ON/OFF . Stops continuous playback and continuous recording. The sled moves to the outer circumference only when this is pressed. The sled[...]

24 MDS-JE770 G X REC SYNC L.SYNC OVER B/1 A-/REP REC MODE DISC/LP2 SLEEP/SHUF MONO Servo OFF T racking servo ON Recording mode OFF CL V normal mode T racking offset cancel OFF Groove Low reflection CL V A CL V UNLOCK Contents When Lit When Off Display Servo ON T racking servo OFF Recording mode ON CL V low speed mode ABCD adjustment completed T rac[...]

25 MDS-JE770 SECTION 5 ELECTRICAL ADJUSTMENTS 5-1. PARTS REPLA CEMENT AND ADJUSTMENT If malfunctions caused by Optical pick-up such as sound skipping are suspected, follow the following check. Chec k before replacement Other faults are suspected. Check the threading mechanism, etc. Start NG NG NG OK OK OK Laser Power Check 5-6-2. (See page 28) 5-6-[...]

26 MDS-JE770 5-6-4. Auto Check (See page 29) Start YES NO NO NO NO NO NO NO NO YES YES YES YES YES YES YES Replace IC195 Replace OP or IO195 Replace IC101, IC195, or D101 5-11. Iop NV SA VE (See page 32) Replace OP , IC190, or IC195 Replace OP , IC102, IC190, or IC195 Replace OP , IC101, IC151, or IC195 Replace OP Replace the spindle motor End adju[...]

27 MDS-JE770 5-7. Initial setting of adjustment values 5-8. Recording of Iop information 5-9. TEMP ADJUST 5-10. Laser power adjustment 5-1 1. Iop NV Save 5-12. Traverse adjustment 5-13. Focus bias adjustment 5-16. Auto gain adjustment 5-6-4. AUTO CHECK 5-2. PRECA UTIONS FOR CHECKING LASER DIODE EMISSION T o check the emission of the laser diode dur[...]

28 MDS-JE770 5. Press the MENU/NO button and display “LDPWR CHECK” and stop the laser emission. (The MENU/NO button is effective at all times to stop the laser emission.) Note 1: After step 4, each time the YES button is pressed, the display will be switched between “LD 0.7 mW $ ”, “LD 6.2 mW $ ”, and “LD Wp $ ”. Nothing needs to be[...]

29 MDS-JE770 7. Press the YES button and display “EFB = MO-W”. 8. Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not rotate the l AMS L knob. (W rite power traverse checking) (T rav erse W av eform) 1 1. Press the YES button display “EF MO CHECK”(C14) The disc stops rotating automatically . 12.[...]

30 MDS-JE770 5-6-8. C PLA Y Check MO Error Rate Chec k Checking Procedur e : 1. Load a continuously recorded test disc (MDW -74/GA-1). (Refer to “5-5. Using the Continuously Recorded Disc”.) 2. Rotate the l AMS L knob and display “CPLA Y1 MODE”(C34). 3. Press the YES button and display “CPLA Y1 MID”. 4. The display changes to “C = AD [...]

31 MDS-JE770 5-7. INITIAL SETTING OF ADJUSTMENT VALUE Note: Mode which sets the adjustment results recorded in the non-vola- tile memory to the initial setting value. However the results of the temperature compensation offset adjustment will not change to the initial setting value. If initial setting is performed, perform all adjustments again ex- [...]

32 MDS-JE770 7. Then, rotate the l AMS L knob and display “LDPWR CHECK”(C13). 8. Press the YES button once and display “LD 0.9 mW $ ”. Check that the reading of the laser power meter become the speci- fied value. 9. Press the YES button once more and display “LD 7.0 mW $ ”. Check that the reading the laser power meter and digital volt m[...]

33 MDS-JE770 1 1. Rotate the l AMS L knob until the waveform of the oscilloscope moves closer to the specified value. In this adjustment, waveform varies at intervals of approx. 2%. Adjust the waveform so that the specified value is satisfied as much as possible. (T rav erse W av ef or m) 12. Press the YES button, and save the adjustment results in[...]

34 MDS-JE770 5-14. ERROR RA TE CHECK 5-14-1. CD Error Rate Chec k Checking Procedur e : 1. Load a check disc (MD) TDYS-1. 2. Rotate the l AMS L knob and display “CPLA Y1 MODE”(C34). 3. Press the YES button twice and display “CPLA Y1 MID”. 4. The display changes to “C = AD = ”. 5. Check that the C error rate is below 20. 6. Press the MEN[...]

35 MDS-JE770 NO TE: It is useful to use the jig. for checking the waveform. (Refer to Servicing Note on page 6.) [BD BO ARD] (SIDE B) D101 IC151 23 1 27 1 1 7 IC101 CN101 CN103 CN102 IC195 IC190 CN105 IC102 * NO TE 5-17. ADJUSTING POINTS AND CONNECTING POINTS [BD BO ARD] (SIDE A)[...]

36 MDS-JE770 SECTION 6 DIA GRAMS 6-1. CIRCUIT BO ARDS LOCA TION KEY -SW board KB board HP board DISPLA Y board BD board MAIN board PT board V OL-SEL board (SP model) • Abbreviation SP : Singapore model[...]

37 37 MDS-JE770 THIS NO TE IS COMMON FOR PRINTED WIRING BO ARDS AND SCHEMA TIC DIA GRAMS. (In addition to this, the necessary note is printed in each b lock.) For schematic diagrams. Note: • All capacitors are in µ F unless otherwise noted. pF: µµ F 50 WV or less are not indicated except f or electrolytics and tantalums. • All resistors are [...]

MDS-JE770 38 38 6-2. BLOCK DIA GRAMS – BD SECTION – F C B D A E I J J I B A C D E F DETECTOR J I A B C D E F LD PD LASER DIODE ILCC PD OPTICAL PICK-UP (KMS-260B/260E) AUTOMATIC POWER CONTROL Q121, 122 APC PD APCREF AT AMP B.P.F. WBL ADFM ADIN ADFG ABCD AMP ABCD FE TE SE F0CNT WBL 3T EQ COMMAND SWDT SCLK XLAT RFO RF AGC & EQ AGCI EQ RF RF AM[...]

MDS-JE770 39 39 – MAIN SECTION – X550 45.1584MHz – 1 – 2 LED DRIVE Q726 ROTARY ENCODER FL DRIVE Q761, 762 D726 STANDBY A/D, D/A CONVERTER IC500 SDTO ADDT DADT, BCK, LRCK SDTI A B LINE AMP IC310 MUTING Q181, 281 MUTING CONTROL SWITCH Q380 REMOTE CONTROL RECEIVER IC740 OSC J300 RV790 PHONE LEVEL D382 D381 ANALOG IN J790 PHONES J851 CONTROL A1[...]

40 40 MDS-JE770 MAIN BOARD CN1 (Page 45) MAIN BOARD CN2 (Page 45) B A BD BOARD (SIDE B) 1 2 3 4 5 Ref. No . Location D101 A-4 Q101 B-1 Q131 C-1 Q132 B-1 Q133 B-1 Q134 B-1 • Semiconductor Location Ref. No. Location D181 D-3 D183 D-3 IC101 A-3 IC102 B-3 IC141 C-1 IC151 C-2 IC153 C-3 IC171 D-2 • Semiconductor Location Ref . No. Location IC181 D-3 [...]

MDS-JE770 41 41 6-4. SCHEMA TIC DIA GRAM – BD SECTION (1/2) – • See page 37 for Wa veforms. • See page 52 for IC Pin Functions. • See page 50 for IC Block Diagrams. (KMS - 260B/260E) BD BOARD (2/2) (Page 42) BD BOARD (2/2) (Page 42) BD BOARD (2/2) (Page 42)[...]

MDS-JE770 42 42 6-5. SCHEMA TIC DIA GRAM – BD SECTION (2/2) – • See pa g e 37 for W aveforms. • See pa ge 53 for IC Pin Functions. • See page 50 fo r IC Bloc k Diagrams. MAIN BOARD(1/2) CN2 (P age 43) MAIN BOARD(1/2) CN1 (P age 43) BD BOARD (1/2) (P age 41) BD BOARD (1/2) (P age 41) BD BOARD (1/2) (P age 41)[...]

MDS-JE770 43 43 6-6. SCHEMA TIC DIA GRAM – MAIN SECTION (1/2) – • See page 37 for W aveforms. • See page 56 f or IC Pin Functions. • See page 51 for IC Block Dia grams. C 1 7 7 C 2 7 7 C 2 6 1 C 1 6 1 C 5 2 0 C 4 9 0 C58 C 4 9 1 C 4 9 2 C 5 0 1 C 5 0 5 C 5 1 5 C 5 1 6 C 5 1 7 C 5 2 2 C 5 2 4 C 5 3 1 C 5 3 2 C 5 3 6 C 6 4 1 C 6 0 1 C 6 1 3[...]

MDS-JE770 44 44 6-7. SCHEMA TIC DIA GRAM – MAIN SECTION (2/2) – • See page 51 for IC Bloc k Diagrams. R434 R407 C402 C412 C424 C442 R425 R424 C405 C401 C411 C406 C416 C423 C425 C431 C432 L831 Q821 R21 R22 R821 R822 R823 R825 R826 R828 R420 R431 R912 R824 R827 R911 R421 C441 R441 R443 R442 C461 C466 R406 JW451 JW452 C404 FB410 R423 Q822 D421 Q[...]

MDS-JE770 45 45 BD BOARD CN103 (Page 40) B BD BOARD CN102 (Page 40) A DISPLAY BOARD CN700 (Page 46) C HP BOARD CN790 (Page 46) D 11 (11) 1-681-740- MAIN BOARD KB BOARD CN2780 (Page 46) E PT BOARD CN921 (Page 48) F (CHASSIS) SP AEP,UK SP 2 3 4 5 6 7 8 9 10 11 12 A 1 B C D E F G H IC1 IC550 IC500 R51 R4 R40 JW 121 L451 R41 C58 C62 R9 JW 120 JW151 C42[...]

MDS-JE770 46 46 Ref . No. Location D726 F-1 D733 E-4 D775 C-7 IC740 F-3 IC760 A-4 Q726 E-6 Q733 E-5 Q761 A-7 Q762 A-7 Q775 B-2 6-9. PRINTED WIRING BO ARD – DISPLA Y SECTION – • See page 36 for Cir cuit Board Location. There are a fe w cases that the par t isn’t mounted in model is printed on diagram. MAIN BOARD CN390 (Page 45) D 11 (11) 1-6[...]

MDS-JE770 47 47 6-10. SCHEMA TIC DIA GRAM – DISPLA Y SECTION – R 7 1 4 R 7 1 3 R 7 1 2 R 7 3 2 R 7 0 5 R 7 0 4 R 7 0 3 R 7 0 2 R 7 4 7 R 7 0 6 C 7 9 1 R 7 2 4 R 7 2 3 R 7 2 2 C 7 6 8 C 7 7 0 C 7 6 6 R 7 7 0 R 7 6 4 R 7 6 3 R 7 6 1 R 7 6 2 C 7 6 0 R 7 33 C 7 4 3 R 7 4 1 R 7 1 5 R 7 1 6 R 7 9 1 D 7 7 5 R 1 7 2 6 R 1 7 3 3 C 7 5 1 C 7 5 3 C N 7 9 [...]

MDS-JE770 48 48 6-11. PRINTED WIRING BO ARD – PO WER SECTION – • See page 36 f or Circuit Boar d Location. There are a f ew cases that the part isn’t mounted in model is printed on diagram. MAIN BOARD CN400 (Page 45) F AC IN 11 (11) 1-681-739- PT BOARD * * NOT REPLACEABLE: BUILT IN TRANSFORMER 2 3 4 5 6 7 8 A 1 B C VOL – SEL BOARD 11 (11)[...]

MDS-JE770 49 49 6-12. SCHEMA TIC DIA GRAM – PO WER SECTION – (Page 44) MAIN BOARD (2/2) CN400[...]

MDS-JE770 50 50 6-13. IC BLOCK DIA GRAMS IC101 CXA2523AR (BD BO ARD) IC151 CXD2662R (BD BO ARD) IC141 BH6519FS-E2 (BD BO ARD) 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 123456789 10 11 12 13 14 15 16 GND VG IN4R IN4F VM4 OUT4F PGND4 OUT4R VM34 OUT3R PGND3 OUT3F VM3 IN3F IN3R PSB CAPA – CAPA+ IN2R IN2F VM2 OUT2F PGND2 OUT2R VM12 OUT1R PGND1 O[...]

51 MDS-JE770 IC500 AK4524 (MAIN BO ARD) IC440 M54641L (MAIN BO ARD) VCOM AINR AINL 2 1 3 VREF 4 TEST 7 XTI 9 XT ALE 10 XTO 8 SDTI 14 LRCK 11 BICK 12 SDTO 13 AGND 5 VA 6 A/D CONVERTER BLOCK D/A CONVERTER BLOCK CLOCK GENERA TOR & DIVIDER AUDIO INTERFACE CONTROLLER CDTI 15 CIF 18 CLKO 21 AOUTL+ 26 AOUTL– 25 DGND 24 VD 23 VT 22 AOUTR+ 28 AOUTR–[...]

52 MDS-JE770 6-14. IC PIN FUNCTION DESCRIPTION • IC101 CXA2523AR RF Amplifier (BD BO ARD) Pin No . Pin Name I/O Description I J VC A to F PD APC APCREF GND TEMPI TEMPR SWDT SCLK XLA T XSTBY F0CNT VREF EQADJ 3T ADJ Vcc WBLADJ TE CSLED SE ADFM ADIN ADAGC ADFG AUX FE ABCD BOTM PEAK RF RF AGC AGCI COMPO COMPP ADDC OPO OPN RFO MORFI MORFO I I O I I O [...]

53 MDS-JE770 MNT0 (FOK) MNT1 (SHCK) MNT2 (XBUSY) MNT3 (SLOC) SWDT SCLK XLA T SRDT SENS XRST SQSY DQSY RECP XINT TX OSCI OSCO XTSL DIN0 DIN1 DOUT DADTI LRCKI XBCKI ADDT DADT LRCK XBCK FS256 DVDD A03 to A00 A10 A04 to A08 A1 1 DVSS XOE XCAS A09 XRAS XWE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 - 34 35 36 - 4[...]

54 MDS-JE770 Description Pin No . Pin Name I/O 48 49 50, 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 D1 D0 D2, D3 MVCI ASYO ASYI A VDD BIAS RFI A VSS PCO FILI FILO CL TV PEAK BOTM ABCD FE AUX1 VC ADIO A VDD ADR T ADRB A VSS SE TE DCHG TEST4 ADFG F0CNT XLRF CKRF DTRF APCREF TEST0 TRDR Data[...]

55 MDS-JE770 Description Pin No . Pin Name I/O 86 87 88 89 90 91 92 93 94 95 96 - 98 99 100 TFDR DVDD FFDR FRDR FS4 SRDR SFDR SPRD SPFD FGIN TEST1 to TEST3 DVSS EFMO O I O O O O O O O I (S) I — O T racking servo drive PWM output (+) +3V power supply (Digital) Focus servo drive PWM output (+) Focus servo drive PWM output (–) 176.4 kHz clock sign[...]

56 MDS-JE770 1 FLDT O Serial data signal output to the display driver . 2 FLCK O Serial clock signal output to the display driver . L: Active 3 A1-IN I A1 Control input. 4 SIRCS I Remote control input. 5 - 7 NC — Not used. 8 BYTE I Data bus changed input. (Connected to ground.) 9 CNVSS — Ground. 10 XIN-T I Not used . (open) 1 1 XOUT -T O Not us[...]

57 MDS-JE770 40 ADA. LA TCH O Chip select signal output to the AK4524. L: Active 41 EPN I Not used. (Fixed at L) 42 L : DINT1/H : CLIP — Not used. (open) 43 NC — Not used. 44 PROTECT I Recording-protection claw detection input from the protection detection switch. H: Protect 45 SCL O Clock signal output to the EEP-ROM. 46 CE I Not used. (Fixed [...]

58 MDS-JE770 81 STB O Strobe signal output to the power supply circuit. H: Power supply ON: L: standby 82 BEEP SW — Not used. 83 REC — Not used. 84 FLCS O Chip select signal output to the MSM9202 (IC760) 85, 86 D.VOL0,1 — Not used. 87, 88 JOG0, JOG1 I Jog dial pulse input from the rotary encoder . 89 IOP I Optical Pick-up voltage (current) de[...]

59 MDS-JE770 Description Pin Name Pin No. I/O 1, 2 AD3, AD4 O Fluorescent display tube (FL760) anode electrode drive 3-37 SEG1-35 O Fluorescent display tube (FL760) segment electrode drive 38 VDISP1 I Power supply for fluorescent display tube (FL760) drive 39-62 COM1-24 O Fluorescent display tube (FL760) grid electrode drive 63 VFL1 I Power supply [...]

60 MDS-JE770 7-1. CHASSIS SECTION Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks SECTION 7 EXPLODED VIEWS NO TE: • -XX, -X mean standardized parts, so they may have some differences from the original one. • Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be [...]

61 MDS-JE770 7-2. FR ONT P ANEL SECTION Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks supplied with RV790 59 54 54 54 54 63 54 54 60 62 61 64 51 52 54 57 56 54 54 53 55 58 65 supplied with J790 not supplied not supplied FL750 51 X-4953-713-1 P ANEL ASSY , FRONT ...(BLACK) 51 X-4953-714-1 P ANEL ASSY , FRONT ...(SIL VER[...]

62 MDS-JE770 7-3. MECHANISM SECTION-1 (MDM-7A) Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks #2 304 305 306 302 301 307 305 320 302 311 319 312 310 309 314 313 315 316 318 303 317 308 * 301 4-996-267-01 BASE (BU-D) 302 4-231-319-01 SCREW (2X6) CZN, +B (P) TRI 303 4-227-007-01 GEAR (SB) 304 4-227-025-01 BEL T (LOADING) [...]

63 MDS-JE770 7-4. MECHANISM SECTION-2 (MDM-7A) The components identified by mark 0 or dotted line with mark 0 are critical for saf ety . Replace only with par t number specified. Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 359 358 357 355 354 356 360 359 362 352 353 353 351 363 352 353 362 HR901 S102 M101 M103 not su[...]

64 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks MDS-JE770 SECTION 8 ELECTRICAL P ARTS LIST Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks NO TE: • Due to standardization, replacements in the parts list may be different from the parts specified in the diagrams or the components used on th[...]

65 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks MDS-JE770 BD IC190 8-759-460-72 IC BA033FP-E2 IC195 8-759-640-41 IC BR24C08F-E2 <JUMPER RESISTOR> JW201 1-216-295-91 SHORT 0 JW202 1-216-295-91 SHORT 0 JW203 1-216-295-91 SHORT 0 JW903 1-216-295-91 SHORT 0 JW904 1-216-295-91 SHORT 0 <COIL> L101 1-500-245-11 F[...]

66 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks MDS-JE770 DISPLA Y HP KEY-SW A-2007-926-A DISPLA Y BOARD, COMPLETE (AEP ,UK) A-2007-932-A DISPLA Y BOARD, COMPLETE (SP) *********************** * 4-955-901-01 CUSHION (FL) * 4-996-686-01 HOLDER (FL) <CAP ACITOR> C700 1-126-153-11 ELECT 22uF 20% 6.3V C720 1-164-159-[...]

67 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks MDS-JE770 MAIN <CONNECTOR> CN720 1-766-739-11 CONNECTOR, BOARD TO BOARD 8P <DIODE> D726 8-719-046-44 LED SEL5221S-TP15 (ST ANDBY) D733 8-719-046-39 LED SEL5821A-TP15 (GROUP) <IC> IC740 8-759-826-34 IC NJL74H400A <TRANSISTOR> Q726 8-729-900-80 TRAN[...]

68 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks MDS-JE770 MAIN C550 1-164-159-11 CERAMIC 0.1uF 50V C551 1-104-665-11 ELECT 100uF 20% 10V C552 1-164-159-11 CERAMIC 0.1uF 50V C553 1-162-195-31 CERAMIC 4.7PF 10% 50V C554 1-162-294-31 CERAMIC 0.001uF 10% 50V C555 1-162-203-31 CERAMIC 15PF 5% 50V C556 1-162-215-31 CERAMIC [...]

69 MDS-JE770 MAIN Q490 8-729-194-57 TRANSISTOR 2SC945TP-QP Q821 8-729-620-05 TRANSISTOR 2SC2603TP-EF Q822 8-729-620-05 TRANSISTOR 2SC2603TP-EF Q851 8-729-620-05 TRANSISTOR 2SC2603TP-EF Q911 8-729-922-37 TRANSISTOR 2SD2144S-TP-UVW <RESISTOR> R3 1-247-807-31 CARBON 100 5% 1/4W R9 1-249-425-11 CARBON 4.7K 5% 1/4W F R17 1-249-429-11 CARBON 10K 5%[...]

70 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks MDS-JE770 R912 1-249-437-11 CARBON 47K 5% 1/4W R1090 1-249-429-11 CARBON 10K 5% 1/4W (SP) <VIBRA TOR> X15 1-795-004-21 VIBRA TOR, CERAMIC (10MHz) X550 1-781-998-11 VIBRATOR, CR YST AL (45.1584MHz) ****************************************************** 1-681-739-11 [...]

71 MDS-JE770 MEMO[...]

MDS-JE770 REVISION HIST OR Y Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. V er . Date Description of Revision 1.0 2001.05 New[...]