Service manual

ManualsBrandsYamaha ManualsMusical InstrumentDG100-212

SERVICE MANUAL

GUITAR PRE-AMPLIFIER

011400

HAMAMATSU, JAPAN

2.1K-656 Printed in Japan '98.03

CONTENTS

SPECIFICATIONS·············································································· 3

PANEL LAYOUT················································································· 4

CIRCUIT BOARD LAYOUT ······························································ 5

BLOCK DIAGRAM·············································································· 6

DISASSEMBLY PROCEDURE························································ 7

LSI PIN DESCRIPTION····································································· 9

IC BLOCK DIAGRAM ······································································ 12

CIRCUIT BOARDS··········································································· 14

TEST PROGRAM············································································· 18

ERROR MESSAGES······································································· 21

MIDI IMPLEMENTATION CHART················································· 22

PARTS LIST

OVERALL CIRCUIT DIAGRAM

19980301-198000

Summary of content (42 pages)

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GUITAR PRE-AMPLIFIER SERVICE MANUAL CONTENTS SPECIFICATIONS·············································································· 3 PANEL LAYOUT················································································· 4 CIRCUIT BOARD LAYOUT ······························································ 5 BLOCK DIAGRAM·············································································· 6 DISASSEMBLY PROCEDURE ························································ 7 LSI PIN DESCR
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DG100-212 IMPORTANT NOTICE This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and understood by the users, and have therefore not been restated.
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DG100-212 SPECIFICATIONS Digital Section Complete Digital Signal Processing Internal 8 Channel Preset Digital Reverb (SPRING, HALL, PLATE) Digital Tape Echo Speaker Simulator (LINE OUT) Analog Section 100W Solid State Power Amp 30 cm Speaker (Celestion Vintage 30) X 2 MIDI Function Receive : Program change, Control Change (No.
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DG100-212 PANEL LAYOUT Front panel Input Jack (INPUT HIGH, LOW) Trim Control (TRIM) Output Level Control (OUTPUT) Gain Volume (GAIN) Master Volume (MASTER) Tone Controls (TREBLE, HIGH MID, LOW MID, BASS, PRESENCE) Reverb Volume (REVERB) Amp Select Button/Amp Select Display (LEAD 1, 2/DRIVE 1, 2/CRUNCH 1, 2/CLEAN 1, 2) Reverb Type Select Button (REVERB) Reverb Type Display Lamp (SPRING, HALL, PLATE) Mode Select Button (MODE) Mode Display Lamp (AMP/TAPE ECHO/UTIL.
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DG100-212 CIRCUIT BOARD LAYOUT WARNING IMPORTANT R R MAIN 5/5 MAIN 4/5 MAIN 3/5 MAIN 2/5 AC cord ANR DM CN8 CN404 ANR CN310 CN315 CN316 CN317 CN402 CN401 CN403 CN314 CN7 SPG CN302 SPH CN102 CN313 CN312 CN301 CN6 DM CN9 K304 CN309 CN5 CN101 Power Transformer MAIN 1/5 CN304 CN303 CN4 CN307 K303 CN308 K302 VR K301 CN602 CN603 CN604 CN318 CN601 CN504 CN503 CN305 CN306 CN501 CN701 CN502 MAIN 1/5 VR CN201 CN202 PN ANF2 ANF PN Power switch 5
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DG100-212 DISASSEMBLY PROCEDURE AC IN 1. Pre-Main Unit 1-1 Remove the four (4) screws marked [70A]. The back board (U) can then be removed. (Fig. 1) 1-2 Remove the plug of the connector assembly (speaker) located on the rear panel and the six (6) screws marked [30A]. The pre-main unit can then be removed by sliding it backward.(Fig. 1, Fig. 2) TRANS LOAD: 4~8 POWER PS 5V 15V 2. Speakers 2-1 Remove the four (4) screws marked [70A]. The back board (U) can then be removed. (Fig.
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DG100-212 3. Front Panel Assembly 3-1 Remove the pre-main unit. (See Procedure 1) 3-2 Remove the five (5) screws marked [30B]. The front panel assembly can then be removed. (Fig. 3) 4. ANR Circuit Board 4-1 Remove the pre-main unit. (See Procedure 1) 4-2 Remove the screw marked [50], the two (2) screws marked [170], the two (2) knobs marked [60] and the four (4) hexagonal nuts marked [A]. The ANR circuit board assembly can then be removed. (Fig. 3) 4-3 Remove the two (2) screws marked [40d].
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DG100-212 8. PN Circuit Board 8-1 Remove the pre-main unit. (See Procedure 1) 8-2 Remove the front panel assembly. (See Procedure 3) 8-3 Remove the ten (10) screws marked [80B]. The PN circuit board assembly can then be removed. (Fig. 4) 8-4 Remove the seven (7) top cap assemblies from the PN circuit board assembly. (Fig. 4) 9. 11. VR Circuit Board 11-1 Remove the pre-main unit. (See Procedure 1) 11-2 Remove the front panel assembly.
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DG100-212 LSI PIN DESCRIPTION HD6413002FP16 (XQ375A00) CPU PIN NO.
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DG100-212 YSS228D-F (XQ962D00) DSP3 (Digital Signal Processor) PIN NO.
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DG100-212 YSF210-M (XK280A00) Digital Filter PIN NO. NAME I/O 1 2 3 4 5 6 7 8 XO XI VSS2 BCI SDSY IBIT1 IBIT2 IBIT3 O I 9 10 11 12 MUTE NC SDI VDD2 I I I I I I I FUNCTION System clock Ground Bit clock L/R select and input timing Input bit selection IBIT 1 IBIT 2 IBIT 3 22 bit 20 bit 18 bit 16 bit AV DSP MEL H L H L H H H H L L H H H H H H L L Mute No connection Input data Power supply PIN NO.
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DG100-212 IC BLOCK DIAGRAM TCHCU04AF-TP1(XD660A00) Hex Inverter 1A 1 14 2 13 6A 2A 3 12 6Y 2Y 4 11 5A 3Y Vss 5 10 6 9 7 8 2 4Y 1B 3 1Y 4 2A 5 14 VDD 1A 1 14 Vcc 2 13 4B 1B 2 13 4B 1Y 3 12 4A 1Y 3 12 4A 2A 4 11 4Y 2A 4 11 4Y 2B 5 10 3B 2B 5 10 3B 2Y 6 9 3A 2Y 6 9 3A VSS 7 8 3Y GND 7 8 3Y TC74HC164AF (XQ967A00) 8-Bit Shift Register A 1 14 VCC B 2 B QH 13 QH QA 3 QA QG 12 QG QB 4 QB QF 11 QF 4Y QC 5 QC
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DG100-212 NE5532P(IG102500) Dual Operational Amplifier 2 Non-Inverting Input A 3 -DC Voltage Supply 4 +V - + + - -V 8 +DC Voltage Supply 7 Output B 6 Inverting Input B 5 + 1 Inverting Input A + Output A NJM072D(IG107000) Dual Operational Amplifier A B 1 2 +V 3 4 5 -IN Non-Inverting Input B OUT A A 6 -V 7 8 -IN +IN +IN A B 9 +V OUT B B MB3790PF(XR967A00) ASSP R CN 0.5 V IN 14 V IN 13 3 100 CONTROL 16 V OUT V OUT 6 ALARM1 7 ALARM2 SBD 590k 1.
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DG100-212 CIRCUIT BOARDS DM Circuit Board MIDI IN OUT to DM-CN9 Component side Note : See parts list for details of circuit board component parts.
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DG100-212 DM Circuit Board to DM-CN9 Pattern side Note : See parts list for details of circuit board component parts.
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DG100-212 PN Circuit Board Panel Layout Component side Pattern side VR Circuit Board Note : See parts list for details of circuit board component parts.
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DG100-212 MAIN Circuit Board 5/5 ANR Circuit Board 4/5 3/5 2/5 LINE OUT LINE OUT LEVEL EFFECT SEND RETURN BLEND 1/5 Component side ANF2 Circuit Board ANF Circuit Board Component side HIGH Note : See parts list for details of circuit board component parts.
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DG100-212 TEST PROGRAM A. SET-UP E. TEST PROGRAM 1. If no specific frequency is required, set the test frequency at 1 kHz. 2. If no specific TRIM and OUTPUT settings are required, set the volumes of TRIM and OUTPUT at maximum. 3. Before turning the POWER switch on, set the Idling Adjustment Volume (VR303, 470 ohms) at minimum. B. HOW TO ENTER THE TEST PROGRAM While simultaneously pressing the MODE, the REVERB and the DRIVE2 switches, turn the POWER switch on. The DG100-212 will enter the self test mode.
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DG100-212 (Test Contents) The RAM Backup Battery check is executed automatically. When all the LEDs light simultaneously, the Battery Check is finished. Then the DG100-212 selects the next test no., so the LED display shows "5". (Error Number) E0 : Battery Low (RAM DATA are kept.) E1 : Unknown Error E2 : Battery Low (RAM DATA are not kept.) or Not Installed (Test Contents) The Flash Memory Erase/Write check is executed automatically.
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DG100-212 (Test Contents) The DG100-212 sets the conditions for the signal Sound Check through the analogue circuit, the A/D converter, the DSP-3 and the D/A Converter. When the Sound Check is started, the LED display shows "81". The Sound Check has two conditions. If the RECALL key is pressed when the LED display shows "81", the LED display changes to "82" and the condition changes to the next as below. 81 : DSP3-1 82 : DSP3-2 Check the following items in each condition of "81" and "82". Items 1.
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DG100-212 ERROR MESSAGES If an error occurs during operation, one of the following error message numbers will appear on the display. : Motor Drive Error CAUSE: SOLUTION: The volume knob has not returned to its assigned position after 20 seconds has elapsed from the start of the recall operation or, the device does not recognize the recall command. Turn off the power and check the circuit for Motor Drive.
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DG100-212 YAMAHA [ Digital Guitar Amplifier ] Date:24-Dec-1997 Model DG100-212 MIDI Implementation Chart Version : 1.0 +----------------------------------------------------------------------+ : : Transmitted : Recognized : Remarks : : Function ...
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A B C D E F G H I J K DG100-212 OVERALL CIRCUIT DIAGRAM 1/2( DM,ANR) 1 L DG100-212 DM 1 RAM ASSP Photo Coupler 2 2 SRAM SRAM DATA SELECTOR DSP3 OR to PN-CN202 3 3 OR OR to VR-CN603 BUS BUFFER 4 4 DRAM AND BUS BUFFER to PN-CN201 5 5 CPU to MAIN1/5-CN308 DSP3 6 6 DRAM D-FF D-FF 7 7 to VR-CN602 to VR-CN604 8 8 REGULATOR OP AMP 9 9 ADC to ANF-CN501 OP AMP 10 10 REGULATOR COUNTER SHIF T REGISTOR DAC 11 11 DIGITAL FILTER D-FF OP AMP AND DAC 12 12 I
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A B C D E F G H I J K L M N O P Q DG100-212 OVERALL CIRCUIT DIAGRAM 2/2 (MAIN1/5~5/5,PN,VR,ANF,ANF2) DG100-212 1 1 to DM-CN4 ANF2 to DM-CN5 PN VR HIGH AMP PLATE AMP LEAD1,LEAD2,DRIVE1,DRIVE2 TAPE ECHO MOTOR DRIVER OP AMP 2 TAPE UTIL ECHO 2 CRUNCH1,CRUNCH2,CLEAN1,CLEAN2 , GAIN MASTER TREBLE HIGH MID LOW MID BASS (TIME) PRESENCE (FEED BACK) KEC-54163-5/5 1 3 ,STORE,RECALL D-FF SPRING HALL PLATE REVERB (LEVEL) 3 MODE,REVERB LEAD1 Program DRIVE1 Channel CRUNCH
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GUITAR AMPLIFIER PARTS LIST CONTENTS OVERALL ASSEMBLY····································································································································· 2 PRE-MAIN UNIT················································································································································ 4 OVERALL CABINET ASSEMBLY ·················································································································· 6 FRONT PANEL ASSEMBLY
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DG100-212 OVERALL ASSEMBLY Pre-main unit; See page 4 Overall cabinet assembly; See page 6 2
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DG100-212 REF NO. * * * * * * * 10 12 14 18 20 30 40 50 60 70 80 90 100 110 112 114 120 132 142 152 162 PART NO.
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DG100-212 PRE-MAIN UNIT AC cord assembly Power transformer Earth mark ANR circuit board assembly Chassis assembly; See page 8 Front panel assembly; See page 7 Power switch assembly 4
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DG100-212 REF NO. * * * * * * * * * * * * 10 12 14 18 20 22 24 28 30 40 40a 40b 40c 40d 50 60 70 80 90 100 100a 110 112 114 118 120 124 130 140 170 180 192 202 215 228 PART NO.
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DG100-212 OVERALL CABINET ASSEMBLY Handle assembly Front board assembly PART NO. DESCRIPTION VZ893900 OVERALL CABINET ASSEMBLY Cabinet Assembly 10 Vinyl 20 30 AA809050 Corner 31 EX802320 Round Head Wood Screw 40 NB812640 Handle Assembly 50 VZ894500 Front Board Assembly 50a V2237300 Name Plate 60 AA801680 Caster 70 AA801690 Socket 71 VB857600 Bind Head Screw 72 EX802310 Spring Washer 80 VZ894600 Back Board 90 V2168900 Shield Sheet REMARKS REF NO.
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DG100-212 FRONT PANEL ASSEMBLY VR circuit board assembly 20b 20a 70b 70c 70d 70h 70e 70a 70j PN circuit board assembly REF NO. * * * * * * * * * 10 20 20a 20b 30 40 50 60 70 70a 70b 70c 70d 70e 70f 70g 70h 70i 70j 80 90 100 110 120 130 PART NO.
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DG100-212 CHASSIS ASSEMBLY 8
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DG100-212 REF NO. * * * * * * * * * * * * * 10 20 30 40 50 52 54 60 70 72 74 80 90 95 100 110 115 120 130 140 150 160 170 180 190 200 PART NO.
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DG100-212 ELECTRICAL PARTS REF NO.
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DG100-212 REF NO. C118 C119 C120 C121 C122 C123 C124 C125 C126 -129 C130 C131 C132 C133 -136 C137 -140 C141 -143 C144 C145 C146 C147 C148 C151 C152 C155 C156 C157 C158 C159 C160 C163 C164 C165 C166 C167 C168 C169 C170 C171 -174 C175 C176 C177 -180 C181 -190 C191 -195 C196 CN102 CN004 CN005 CN006 CN007 CN008 CN009 CN101 D1 EM001 -011 EM101 -103 EM104 -106 IC002 IC003 IC004 IC005 PART NO.
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DG100-212 REF NO. * IC008 IC008 * IC011 IC011 IC012 IC013 IC014 IC018 IC019 IC021 IC025 IC027 IC028 IC029 IC033 * IC034 IC035 IC036 IC101 IC102 IC110 IC117 IC118 IC119 IC120 IC121 IC122 IC123 IC124 IC125 IC128 IC129 IC130 JK1 L1-4 R002 R005 R006 R008 R014 R015 R018 R025 R028 R031 R032 R035 R036 R037 R038 R040 R043 R044 R046 R049 R101 R102 R105 R106 R107 R108 -111 R112 -117 R118 -121 R122 R123 R125 -128 PART NO.
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DG100-212 PART NO. HF755820 HF755820 HF756470 HF756470 HF756220 HF756220 HF756100 HF756100 HF758100 HF758100 HF756470 RE047100 RE047100 VV556400 VV556400 VU682100 VE463500 VN277000 DESCRIPTION Carbon Resistor Carbon Resistor Carbon Resistor Carbon Resistor Carbon Resistor Carbon Resistor Carbon Resistor Carbon Resistor Carbon Resistor Carbon Resistor Carbon Resistor Resistor Array Resistor Array Transistor Transistor Quartz Crystal Unit Quartz Crystal Unit Quartz Crystal Unit 820.0 1/4 J 820.0 1/4 J 4.
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DG100-212 REF NO. C408 C409 C410 C411 C412 C413 * C414 C415 C416 -418 C419 C420 C421 C422 C423 C424 C425 C426 -428 * C501 C502 C503 -506 C507 C508 * C601 C602 C603 C604 C605 C606 C607 C608 C609 C610 C611 C612 C613 C614 C615 C616 C617 C618 C619 C701 C702 C703 C704 C705 C706 C707 C708 CN301 CN302 CN303 CN304 CN305 CN306 CN307 CN308 CN309 CN310 CN312 CN314 CN315 CN317 CN318 CN401 CN402 CN403 PART NO.
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DG100-212 REF NO. * * * * CN404 CN501 CN502 CN503 CN504 CN601 CN602 CN603 CN604 CN701 D301 -309 D401 D402 D501 -505 D701 -704 DB301 DB302 DB303 EM601 F301 F301 F301 F302 F302 F302 F303 F303 F303 F304 F304 F304 F305 F305 F305 FT301 FT302 IC301 IC302 IC303 IC401 -403 IC501 IC601 -608 IC701 JK401 JK402 JK403 JK501 JK701 K301 K302 K303 K304 K401 L401 L402 LD501 LD502 R301 R302 R303 R304 R305 R306 R307 R308 PART NO.
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DG100-212 REF NO. R309 R310 R311 R312 -315 R316 R317 R318 R319 R320 R321 R322 R323 R324 R325 R326 R327 R328 R329 R330 R331 R332 R333 R334 R335 R336 R337 R338 R339 R340 R341 R401 R402 R403 R404 R405 R406 R407 R408 R409 R410 R411 R412 R413 R414 R415 R416 R417 R418 R419 R420 -423 R424 R425 -427 R428 R429 R430 R431 R432 R433 R434 R435 R501 R502 R503 R504 R505 R506 R507 PART NO.
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DG100-212 REF NO. R508 R509 R510 R511 R512 R513 R514 R515 R516 R601 R602 R603 R604 R605 R606 R607 R608 R609 R610 R611 R612 R613 R614 R615 R616 R701 R702 R703 R704 R705 R706 R707 R708 R709 R710 RA301 -303 RY301 SPGH TR301 -303 TR304 -306 TR307 TR308 TR309 TR310 TR311 TR312 TR313 TR314 TR501 TR502 TR503 VR301 VR302 VR303 * VR401 * VR402 * VR501 VR502 VR601 VR602 VR603 VR604 VR605 VR606 VR607 VR608 VR609 PART NO.
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DG100-212 REMARKS VR610 VR611 VR612 VR613 ZD301 ZD401 ZD402 ZD501 ZD601 -608 PART NO.