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Yamaha VL1-m Service Manual
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Yamaha VL1-m Service Manual

Yamaha VL1-m Service Manual

Virtual acoustic tone generator
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19941001-300000
VIRTUAL
ACOUSTIC
CONTENTS
SPECIFICATIONS
PANEL LAYOUT
CIRCUIT BOARD WIRING
CIRCUIT BOARD LAYOUT
BLOCK DIAGRAM
DISASSEMBLY
LSI PIN DESCRIPTION
IC BLOCK DIAGRAM
CIRCUIT BOARDS
TEST
PROGRAM
ERROR
MESSAGES
MIDl
DATA
MIDl
IMPLEMENTATION
PARTS
LIST
TONE
SERVICE
YAMAHA
—VI-I-m
Moby
(ä;2)
.
b)
(ZEfåfAA)
(z=v
OJ5 54753k)
PROCEDURE
(LSI*+æfiEä)
(IC3a
v5
2)
(Y—
FORMAT
...................................................
CHART
..... ..... ..... .......
YAMAHA
GENERATOR
MANUAL
.......2/3
......10
..15
..22
..34/43
.
.............51/52
..53
......60
CORR
HAMAMATSU.
JAPAN
2.55K-494@Printedin Japan'94.10

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  • Page 1 VIRTUAL ACOUSTIC TONE GENERATOR SERVICE MANUAL YAMAHA —VI-I-m Moby CONTENTS (ä;2) SPECIFICATIONS ..2/3 PANEL LAYOUT CIRCUIT BOARD WIRING (ZEfåfAA) CIRCUIT BOARD LAYOUT (z=v BLOCK DIAGRAM OJ5 54753k) DISASSEMBLY PROCEDURE ..10 LSI PIN DESCRIPTION (LSI*+æfiEä) ..15 IC BLOCK DIAGRAM (IC3a CIRCUIT BOARDS (Y—...
  • Page 2 Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury, destruction of expensive components and failure of the product to perform as specified. For these reasons, we advise all Yamaha product owners that all service required should be performed by an authorized Yamaha Retailer or the appointed service representative.
  • Page 3 VLI-m SPECIFICATIONS TONE GENERATOR SNA (Self-oscillating Virtual Acoustic Synthesis). Type Modifiers Harmonic Enhancer. Dynamic Filter (LPF, HPF, BPF, BEF, with resonance). Equalizer (5 band with frequency, resonance, and boost/cut control). Impulse Expander. Resonator. 32-bit digital signal processor, stereo in/stereo out. Effects Modulation effects (flanger, pitch change, distortion).
  • Page 4 VLI-m (Self oscillation type/ VA Synthesissystem) x 715 32bit DSP Y -7-7 = 2 -a-Z.-y y >zælJ— 1287M 3.5117 n -Y (2HD*tzli2DD) LCD= Play Edit LEDff LEDfrf Utility Copy Store Data Entry Cursor Function Exit Enter/Sound å+4LED (MIDI? eat?) Switches y2LCD MIDl IN, OUT,...
  • Page 5 VLI-m • PANEL LAYOUT • Front Panel (7 JL.) Rear Panel (IJ 77JX*JV) 0 00 Front Panel POWER switch POWER (107—) @ MODE buttons MODE (æ— F) MID13*y-j indicator COPY button STORE button @ VOLUME control VOLUME (7tO) a—IA) LCD display & CONT control through F8 function buttons...
  • Page 6 VLI-m CIRCUIT BOARD WIRING...
  • Page 7 VLI-m VLI-m CIRCUIT BOARD LAYOUT Destination Destination PS-CN304 PNB-CN415 DM-CN9 PS-CN301 DM-CN7 AN-CN601 DM-CN8 PS-CN302 CN-CN404 HP-CN411 DM-CN4 Rota switch DM-CN6 PS-CN303 AN-CN602 AN-CN604 JK-CN407 DM-CNII DM-CN3 CN-CN401 DM-CNIO JK-CN408 CN-CN405 DM-CN12 PNA-CN406 CN-CN402 AN-CN605 HP-CN410 PNB-CN414 CN-CN403 AN-CN603 MV-CN409 Front panel (7 vs25000(26P FFC)
  • Page 8 VLI-m VLI-m BLOCK DIAGRAM (jn Y 5 547753 CONTRAST THRU Panel +12V PowerSu -12V AC-m 161vn--1z Rotary MainCPU I'NB 3B01 LCD 240x64 IC27 3S"2HD 68301 IC28 BREATH IC29 CONTROLLER IC26, IC67 IC30 Battery SRAM 16b"1-1z 500KHz IC16 1M x 4 IC39 IClo PHONES...
  • Page 9 VLI-m DISASSEMBLY PROCEDURE Top Cover Remove the seventeen (17) screws marked [150A], then the top cover can be removed. (Fig. 1) Top cover ( [150A1 [150A1 [150A1 (150A] [150A1: B indHead Tapping Screw-B(+1<4 FB5d F) 3.0X8MFZN2BL (EP600190) (Fig. 1) DM Circuit Board Remove the top cover.
  • Page 10 VLI-m Floppy Disk Drive e—FdÄ5 F 34 Remove the top cover. (See procedure I) Remove the four (4) screws marked [80], then the y Y—fid F 7d floppy disk drive assembly can be taken out of the unit. (Fig. 2) b 7 n Y F 74 Remove the four (4) screws marked [70c], then...
  • Page 11 VI-I-m AC INLET [60C] (ACK [60A1 [60A] [120] Power supply unit Power switch ('V7—Äd [P30] Floppy disk drive assembly •y e—F4 5 Ass•y) [65A] [80] [65B] [60A]: Bind Head Tapping Screw-C (+1M FC54 MFZN2BL (EP630240) Bind Head Tapping screw-B (+1<4 FB5d MFZN2BL (EP600190) [65B]: Bind Head Tapping Screw-C (+1M...
  • Page 12 VLI-m HP Circuit Board 10-1 Remove the top cover. (See procedure I) 10-1 Remove the four (4) screws marked [65D], then 10-2 10-2 remove the front panel assembly. (Fig. 2) (1*12) HPY— 10-3 Remove the Wvo (2) screws marked [60D], then 10-3 the HP circuit board can be removed.
  • Page 13 VLI-m Rotary Encoder Switch Remove the top cover. (See procedure 1) 13-1 13-1 Pull off the rotary encoder knob from the front 13-2 13-2 panel. Remove the four (4) screws marked [65D], then 13-3 13-3 remove the front panel assembly. (Fig. 2) iqg-)-y Remove the hexagonal nut marked [B], then the 13-4...
  • Page 14 VLI-m DESCRIPTION • TMP68301AF-16 (XN047AOO) CPU FUNCTION NAME NAME FUNCTION Port A 18 A 19 A 20 Address IACKI Interrupt acknowledge IACKO INT2 Interrupt request INTI INTO Data Address strobe Power supply Data strobe Power supply V cc Data G round Data strobe Ground...
  • Page 15 VLI-m HD63B01YORCEOF (XM234AOO) CPU (PKS) FUNCTION FUNCTION NAME NAME MI/S8 Make contact of key receive/ INMI Non-maskable interrupt MO/S7 Key scan drive Key scan drive PULL PULL connected to ground LC.AE/FS Auto repeat(Eon, H:ofO REPEAT Key off request /KOF-REQ Switch 1 (L: on, H: off) LC//AE connected to +5V...
  • Page 16 VLI-m YSS217-B-F (XM662AOO) DSP-V (Digital Signal Processor) FUNCTION NAME FUNCTION NAME Format select A 16 NSYS Read/write control Address Data strobe Read A 19 Write Ground Chip select Ground Host address CA 1 Data Ground CD 15 CD14 CD13 CD12 CDII CDIO D 15...
  • Page 17 VLI-m TC14L040AF-1884 (XM272AOO) Gate Array-VSCD FUNCTION NAME FUNCTION NAME roun VOPIM12 Buffer output of MELIN 'SHALT Slave [HALT signal /SRES Slave [RESET signal VOP2M11 VOPI SRX2 Buffer output of MTX Input for MELO STX2 Input for MRX VOP2M01 VOP2M02 [SERR Input for /BSERR ESERR Buffer output of /SERR...
  • Page 18 VLI-m • PCM1702P (XN136AOO) DAC (Digital to Analog Converter) p IN NAME FUNCTION NAME FUNCTION Serial data input Analog power supply (+5V) +Vcc DATA BPO DC CLOCK Bit clock BPO decouple +Vdd Digital power supply (+5V9 I OUT Current output DGND Digital ground AGND...
  • Page 19 VLI-m VLI-m • HD74HCT125FPTR (XM908AOO) • SN74AS138NSR (XK544AOO) • SN74HC245NSR (XD838AOO) Quad 3-State Bus Buffer 3 to 8 Demultiplexer SN74HCT245NS-R (XM909AOO) Octal 3-State Bus Transceiver Selæt G 2A Output • TC74HCT273ANS-R (XP007AOO) MC74HC4053FR A (XK836AOO) NJM4560ED (IG040000) • SN74HCT273ANS-R (XM910AOO) Triple 2-Ch.
  • Page 20 VI-I-m VI-I-m CIRCUIT BOARDS (Y — DM Circuit Board (Componentside-*GIJ) 90000 00000009000000 0990000000000 ooooaaaa / {oi Q q OOO 0 0 0 0 0 QQ o O C102 1c2e'cÅ . Nitti!' i tiftiiii'ffiiii iihSv- -'iRM03_ -RAIOS Components side (8±1) SN74AS04NSR (X1313AOO) INVERTER Monolithic Ceramic Cap.
  • Page 21 VLI-m VI-I-m • DM Circuit Board (Pattem side-J# —> fiJ) 0000 oopo 0000 000000000009 0 0 0000000 00999 • • ODDPOOOO tC41 ooooooeppp Lå28 0•22 XR'Å27 iiii' RXS4 Y. RSO_ RA52 RA92 R.i32 ORB7!• RAä2 'ORASO o 'l•nto ERA22• -+10 171M RA17 cgso...
  • Page 22 VLI-m VLI-m • HP Circuit Board • PNA Circuit Board PHONES BREATH CNI.06u YAMAHA CN't3 XP538 LENO' LED403 YAMAHA LED401 LED402 XP538 CMK-P3X CN4 t2 SW403 SW404 SW402 sw.01 ozo- xeq•mo CMK—P3X CN411 CN4tO Components side (Eß±fÅll) Components side (E6RfNll) •...
  • Page 23 0.0100 50VZ (FG644100) CN 409: PH- 6P TE (VB390200) Electrolytic Cap. MV-CN409 to AN-CN603 100.00 16.OV (U1538100) CN 410: PH- 3P TE (VB389900) c 401: YAMAHA 10.00 25.OV (U1547100) HP-CN410 to AN-CN605 c 409: CN407 XP538 CN408 411: 4p-500 (VS46990) Semiconductive Cera.
  • Page 24 VLI-m VLI-m • AN Circuit Board Notes) AN (VS200400) XM475BO Circuit Board: CN603 YAMAHA XM475 Carbon Resistor 601: NJM78L05A (XJ596AOO) REGULATOR 602: 2.7K 1/4 J (HF456270) (XE436AOO) REGULATOR -5V 603, : C651 603,604: PCM1702P (XN136AOO) DAC 603,609: 6.2K 1/4 J (HF456620)
  • Page 25 VLI-m • PS Circuit Board (Power Supply Unit) e Japanese, U.S. & Canadian models ATTENTION AFINDERÉDUIRE L E RISQUE DE FEIJ REMPLACER UNIQUEMENT PAR UN FUSIBLE OE MEME TYPE ET UNE .03.4 S wao• EM 305 PROTECTEURA53 0302 DE MEME TYPE R30s 0316 250V...
  • Page 26 VLI-m Power Supply Unit: (VS219600) (VS219700) Metal Oxide Film Resistor IC301 : uPC1093J REGULATOR R302,R303: 3W (HX806860) H,D,B,A IC302: I-FC78N12H(F) REGUATCR +12,' R304,R305: 68K 3W (HX806800) IC303: IPC7SN12Hf) R304,R305: 33K 3W (HX806750) Photo Coupler R306,R307: 3W (HX806820) PC301 : PC817B R306,R307: aw (HX806810) PC301 :...
  • Page 27 VLI-m TEST PROGRAM TO ENTER THE TEST PROGRAM Turn on the power switch of the VLI-m and wait for a VLI-m TEST MODE:LANUAL few seconds. While pressing the [PLAY] switch, press and hold the [STORE] switch then press the [F8] switch. RA>I Read/Write/ The VLI-m will indicate that you have entered the test...
  • Page 28 VLI-m Slave2 In each test. if an NG (No Good) error is detected, the IC 62 High byte following operations of the test will cause the VLI-m IC61 Low byte error processing. You can then retry the test or perform another test.
  • Page 29 VLI-m will appear and the VLI-m will wait for you to enter a TEST test number. MANUAL MODE Press [EXIT] to end the test. The display shown below Normal will appear and the VLI-m will wait for you to enter a AUTO MODE test...
  • Page 30 VLI-m If the switch is 0K, a beep will sound and you should proceed to test the next switch. If the wrong switch is R—Encoder Left pressed an unexpected code is sent, and the error (Where xx = current value) message NG will be displayed and no sound will be...
  • Page 31 VLI-m TEST 10. DISK CHANGE TEST DISPLAY OF TEST RESULTS According to the order indicated by the LCD, first, insert a 2DD blank disk with the write protect on, then eject it, Disk Read/ Write nnnn and then insert a 2HD blank disk with the write protect (Where nnnn: condition at time of error) off.
  • Page 32 VLI-m TEST 13. EFFECT DSP-V & RAM TEST DISPLAY TEST RESULTS Checks if LSIs of effect circuit work correctly. Slave DISPLAY OF TEST RESULTS Error codes are displayed on the 2nd and 3rd line of the LCD. Effect Slavel Slave2 Effect From the left end figure of the slave I display to right (error number:error code)
  • Page 33 VI-I-m If the test checks 0K, "O' will appear on each figure, if not, Listed below are the specifications and conditions each output during this test. 1 will Listed below are IC numbers. OUTPUT ± 1 Hz, sine wave, distortion Slave 1 CPU: IC 48...
  • Page 34 VLI-m Listed below are the specifications and conditions OUTPUT Output each output during this test. OUTPUT less than -78 dBm Listed below are the specifications and conditions OUTPUT R: 1 kHz ± 1 Hz, sine wave, distortion each output during this test. 0.35 0/0,2.5 ±...
  • Page 35 VI-I-m DISPLAY OF TEST RESULTS If facto settin s are restored. Factor TEST The LCD displays the results and the test will then end. TEST 19. EXIT TEST PROGRAM Exit When this is executed, the following display will appear. Exit To exit the test program mode, press the [INC] switch.
  • Page 36 VLI-m VLI-m TEST MODE:LANUAL [PLAY] b [STORE] [F8] Read/ Battery VLI-m TEST Please select 03 : LCD 04 : LCD [DECI [ENTERI [EXITI [CURSOR UP], [CURSORDOWN] [DEC] : AUTO [INC] FIANUAL [ENTER] : SPECIAL [EXIT] Exit [COPY] Fact. [DEC], [COPY] [DEC] AflDix [DEC]...
  • Page 37 VLI-m FZtdV<NG SPECIAL 2. Battery Batter 2.9V 3.3V [EXIT] "7. D [EXIT] Batter 3.2V [EXIT] & Batter High Batter Read/ Write Master CPU RAM IC29 High 3. LCD Fy IC30 Low Byte IC27 High Byte IC28 Low Byte Slavel CPU RAM IC50 High Byte IC51...
  • Page 38 VLI-m 4. LCD Panel [PLAY] [ENTER] [EXIT] ON/OFF Panel Switch Push PLAY (PLAY] [INCI UPI —i [NC] -9 [CURSOR LEFT] [CURSOR RIGHT] -+ Normal Reverse *75-07 [Exrr] Normal Panel [INC] Panel Push PLAY y5-[ENTER1 0K B -Y-x OUTPUTL,R SPECIAL MODETlt 20 kHm -q z •7 JL.•-E-—...
  • Page 39 VLI-m [EXIT] i 7, [NC] R—Encoder Ri ght 10.5 d R—Encoder Left Disk Change Insert 2DD/2HD e ON ICbt2DD F &OFFZ * 10: Disk Change Ej ect PRT 2DD Disk Change Insert NOPRT Insert PRT 2DD. Eject PRT 2DD, Insert NOPRT &...
  • Page 40 VLI-m 11.5 d R 5 V —F/ "B. 7-7 BCDi±bfr" Disk Read/ Write Y—Fs 13.17 Effect SIDE 0=40 : 9-00/0-79 : 17 LSI iüEb< SIDE : 9-00/0-79 : 17 Disk Read/Write Effect Disk Read/ Write nnnn Effect : Disk format Format .
  • Page 41 VLI-m :IC52,IC53,1C54 (UpperByteJllfi) slave 1 DSP-VI : IC55 slave 1 DSP-V2 (UpperByteJlIh) slave 1 DSP-V2 Slave slave 2 CPU : IC60 : IC62, IC61 (Upper Byte)llh) slave 2 CPU slave 2 DSP-VI : IC63 (Upper B yteJIlfi) slave 2 DSP-VI IC66 Slave Slave...
  • Page 42 VLI-m IKHz Error 17. OUTPUT IKHz Error OUTPUT OUTPUT 16.1 OUTPUT OUTPUT OUTPUT (JIS-C7 OUTPUT PHONES(R) & & & OUTPUT L. OUTPUT R. PHONES(L), PHONES(R) (JIS-C7 5-xv51Nä Output OUTPUT : 1 kHz± ± 2 dBm 10kQ) IKHz OUTPUT : 1.414 ±...
  • Page 43 VI-I-m 18.775 Factory Bank Factor orNO [DEC] [DEC] Factor 19.EXlT Exit Exit YES [INCI NO [DEC) [NC] 7-7, hæ— [DEC] & OUTPUT : -90 dBm PHONES (L) : -85 dBm...
  • Page 44 The specified file cannot be found on the currently loaded floppy disk. Check the file name or use the appropriate disk. Illegal disk! The currently loaded disk has a non-VL1-m format. Either use a different disk or, if the data on the disk is not needed, re-format the disk.
  • Page 45 VI-I-m 13-—3 y-E--Y disk! Change battery! Data found! rotTJ Device number is off! -too Devoce number mismatch! Disk full! Disk formatted! Disk not ready! File found! Illegal disk! Illegal file! ronJ roffJ Memory protected! MIDl buffer full! b tzlv11DIi—5 MIDl checksum error! btu-1vflD1i—B...
  • Page 46 VLI-m MIDl DATA FORMAT 1 MIDl receive MIDl Note Off $9n ... None $Bn $OI-SIF Control Change $Bn S21-S77 $Bn $79 ... Reset Controllers Program Change Channel Aftertouch Pitch Bend SFO $43 som $7A .. Universal Bulk Dump <Dev With Additional Header SFO $43 $1...
  • Page 47 VLI-m 3 Breath Controller and Tone Generator Configuration Normal Mode Breath Controller MIDl MIDl Local onloff (Note Shift) Tone Generator Breath Controller datawill always be received, irrespective of the Transmit channel and Receive channel settings. Note: Demo Mode MIDl out MIDl out (Note Shift) Tone Generator...
  • Page 48 VLI-m 4 System Exclusive Message 4.3 Bulk Dump Request Performed only during receive. Count Value Description 4.1 Bulk Dump Both transmitted and received. Universal Bulk Dump With Additional Header is used. 01000011 Count Value Descript ion 001 Onnnn = device number 01000011 ascii"L"...
  • Page 49 VLI-m 00 IF -7-7 Elem2 Detune Ovvvvvvv = check sum 00 20 -64 —63 Eleml NoteShft Osssssss 0021 -64 —63 Elem2 NoteShft 0022 Elemi RandPtch On reception, memory number is received as I :1-2. 0023 Elem2 RandPtch Elemi Micro Tuning 0024 0 —...
  • Page 50 VLI-m 00 34 -127 - 127 H.Enhanc Depth 0036 0-124 Damping Ctrl name 0043 Return 0037 -16-16 Damping Curve 00 44 0-512 I-ch 0038 -127 Damping Depth Absorptn Ctrl 0046 FBI) FBGain 003A 0-124 00 47 FBD Lch High 003B -16- Absorptn Curve 00 48...
  • Page 51 VLI-m 04 5F 0-127 HE CIT Level 06 05 Break Point 04 60 Break Point 06 06 -64 — 63 Offset 0461 -64 — 63 Offset Same as Break Point / Offset I -2 Same as Break Point / Offset I -4 06 09 -64 —...
  • Page 52 VLI-m 00 22 0-15 Transmit Channel 0023 0-16 Receive Channel 00 24 0-17 Device Number oo 25 Display 0026 Confirm WX Lip 0027 40 - 63 reserve Table 5.4 Micro tuning name oo 00 O— 10794 01 7E 10794 02 00 32 - 126 Table Name...
  • Page 53 VLI-m [ Virtual Acoustic Tone Generator Date: 14-JUN-1994 YAMAHA Model VLI-m MIDI Implementation Chart Version Transmi t t ed Recogni Remarks Function Memori : Basic Default : Channel Changed Memori Default : Mode Messages Altered : Note True voice: : Number...
  • Page 54 VLI-m VIRTUAL ACOUSTIC TONE GENERATOR PARTS LIST CONTENTS (äl') OVERALL ASSEMBLY ELECTRICAL PARTS POWER SUPPLY UNIT DESTINATION ABBREVIATION Notes Japanese model Australian model U.S.A. model European model German model Canadian model British model General model South African model Indonesian model North European model •...
  • Page 55 VLI-m OVERALL ASSEMBLY (fifiAü) Power switch assembly —SW ASS'y) Bottom assembly LAss•y) p 40 p 20 BIOO I P30 70b I FDD assembly (FDD Ass•y) B220 B170 B30c B65 i LCD assembly Display assem bly I (LCD ASSY) ASSY) I Oa 8110 B 65 Panel assembly...
  • Page 56 VLI-m VLI-m REMARKS DESCRIPTION DESCRIPTION PART NO. REMARKS REF NO. PART REF NO. Tapping Card Spacer OVERALL ASSEMBLY VLIm KGLS-6RT >5j-b Bottom Assembly (VS34390) 8220 VS936400 Insulation Sheet vs200300 Circuit Board ÖiSPLÄYÄSSÉMBLY (VSä4aiåf' VS292500 Rail, DM 9600190 Bind Head Tapping Screw-B MFZN2BL 6pcs VS251800...
  • Page 57 VLI-m VLI-m ELECTRICAL PARTS DESCRIPTION REMARKS PART NO. DESCRIPTION REMARKS REF NO. PART VLIm Electrolytic Cap. (chip) 16VUURIC1 ELECTRICAL PARTS 0254100 vs200400 Circuit Board (XM475BO) Carbon Resistor (chip) 10.0 0.1 J 0254220 (XM474CO) Carbon Resistor (chip) 22.0 0.1 J VS200300 Circuit Board 0254680...
  • Page 58 VLI-m REMARKS PART NO. DESCRIPTION REF NO. (VR90370) HCPL-M600 Photo Coupler NXåf4iSö$ CiFéüiiBbåiå (XP538BO) NX814160 Circuit Board (XP538B0) NX814170 Circuit Board •tiæ•uifä6åiä (XP538BO) NX814190 Circuit Board (XP538BO) NX814200 Circuit Board DC/AC INVERTER VQ618300 CXA-LIOA UA353100 1000P 50VJ Mylar Capacitor Capaéif6F •ö.öiöö"SöVä"...
  • Page 59 VLI-m POWER SUPPLY UNIT DESCRIPTION REMARKS PART NO. (VLIm) Power Supply unit Power Supply unit VS219700 R301 Carbon Resistor 680K 1/2W R302 HX806790 A53K-6R8J Thermostat R302 HX806860 Metal Oxide Film Resistor H,D,B,A ••MäåüöiidöFilhi keéis16Ö "Hiäö6Éto•• R304 HX806750 Metal Oxide Film Resistor R304 HX806800 Metal Oxide...
  • Page 60 VLI-m DESCRIPTION REMARKS PART REF NO. 80 850 Diode IOELS6 D302 IX807040 Diode ERB4408 D303 I FOOI 380 Diode 1 SS84 D304 I F003550 Diode HZI 2B2 D305 Diode HZ06B1 bi6dé 'Ffökä4ö• "bäöj•••••• D308 IX806760 Diode 1 OELS2 D309 IX806760 Diode 1OELS2 D310...
  • Page 61 VLI-m VLI-m HP, JK, MV, PNA, PNB & POWER SUPPLY UNIT CIRCUIT DIAGRAMS JKB4 5295&5295 (VK26370) 614.621 ,628. C318: 0.01u 50V (FG744100) Note) CN 412: Notes) Carbon Resistor (chip) HP-CN412 to HP-CN413 638,652: 100.01/4 J (HF455100) 0.022u Circuit Board PNA (NX814150) XP538BO Circuit Board: DM (VS200300) XM474CO...
  • Page 62 VLI-m •DM CIRCUIT DIAGRAM ø NC/ST RA9B AL Søs to CN-CN401 •asøs ICIS RI øs RA27 2.2Kxe .#.$.$.$.FEEEEÉE.E A1 e RA24 RA2S zzxxe 1 mxe 1 eKX9 Ice-7 a.s.a Buffer / B0N ø4 2ø/1 A 16 A1 5 JC39 A1 2 znnN HD63266AF øso...
  • Page 63 VLI-m VLI-m • DM CIRCUIT DIAGRAM RS. R/W. 1 DKXB BSHALT2 DO—OI S NC/ST eeeeeee.e.e.e.e.e.eteee.e.eee.e. DOC—431 R A 49 rz,-rvt7 Sub-CPU TOUT RA42 IC47 IC4B RA41 GATE ARRAY TMP68301 F —16 RASO INTO RA64 RASS RA37 XM272AO 1 OKXB RA40 SSELI.