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Yamaha DG80-112 Service Manual

Manual is about: GUITAR AMPLIFIER Yamaha DG80-112

Summary of DG80-112

  • Page 1

    Ga 011459 19990301-148000 service manual hamamatsu, japan 2.02k-186 printed in japan '99.02 guitar amplifier contents specifications ····································································· 3 panel layout········································································ 4 circuit ...

  • Page 2

    Dg80-112 2 warning: chemical content notice! The solder used in the production of this product contains lead. In addition, other electrical/electronic and/or plastic (where applicable) components may also contain traces of chemicals found by the california health and welfare agency (and possibly oth...

  • Page 3: Specifications

    Specifications dg80-112 3 digital section complete digital signal processing internal 8 channel preset digital reverb (spring, hall, plate) digital tape echo speaker simulator (line out) analog section 80 w (8 Ω ) solid state power amp 30 cm speaker (celestion g12h100) x 1 midi function receive : pr...

  • Page 4: Panel Layout

    Input jacks (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 se...

  • Page 5

    Dm anr anf2 1/5 main ac cord power transformer power switch anr anr anf 5/5 main 4/5 main 3/5 main 2/5 main 1/5 main 1/5 main dm dm vr vr pn pn dg80-112 5 circuit board layout.

  • Page 6

    Block diagram disassembly procedure dg80-112 6 input low jk501 input high jk701 trim vr ic501 red green input level indicator ic701 anf2 anf dm ic104 ic105 ic118 ic119 ic3 ic8,11 ic2 ic123 ic125 i/ v ic122 ic124 ic403 ic34 ic13 ic21,27 ic36 i/ v d/a d/a dram f-rom ic12,14 75 1 2 75 57 21 61 57 57 31...

  • Page 7

    [30b]: bind head screw a4.0x8 mfzn2bl (vp156800) [30c]: bind head screw a3.0x8 mfzn2bl (vp156700) [40]: bind head tapping screw-b 3.0x8 mfzn2bl (ep600190) [40c]: bind head tapping screw-b 3.0x6 mfzn2bl (ep600230) [50]: bind head screw a4.0x8 mfzn2bl (vp156800) [80]: bind head screw a4.0x8 mfzn2bl (v...

  • Page 8

    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 six (6) screws marked [90]. The pn circuit board assembly can then be removed. (fig. 5) 8-4 remove the seven (7) top cap assemblies from the pn circuit board as...

  • Page 9: Lsi Pin Description

    Dg80-112 9 lsi pin description pin no. 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 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 i/o o o i i i i i i i i o o o i i o i i/o i/o i/o i/o i/o i/o i/o i/o i/o i/o i/o i/o i/o i/o i/o i/o o o o o o o o o o ...

  • Page 10

    Dg80-112 10 pin no. 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 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 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 i/o i i o i o i i i i i i o i/o i i i i i i i i i...

  • Page 11

    Dg80-112 11 obit 1 obit 2 h 22 bit h l 20 bit h h 18 bit l l no output l ibit 1 ibit 2 ibit 3 h 22 bit h h l 20 bit h h h 18 bit l h l 16 bit l h h av dsp h l h mel h l pin no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 i/o i i i i o i i i i/o i/o agnd apd ainl+ ainl- acal lgnd vl+ nc dacl dpd cmode smode l//...

  • Page 12: Ic Block Diagram

    Dg80-112 12 ic block diagram q d ck oe q d ck oe q d ck oe q d ck oe output control 1q 1d 2d 2q 3q 3d 4d 4q gnd 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 tchcu04af-tp1(xd660a00) hex inverter sn74hc08nsr(xd831a00) quad 2 input and 1 2 3 1a 1y 4 2a 5 2b 6 2y 7 vss 1b 14 13 12 vdd 4a 11 4y 10 ...

  • Page 13

    Ne5532p(ig102500) dual operational amplifier lb1641(xf494a00) motor driver mb3790pf(xr967a00) assp njm072d(ig107000) dual operational amplifier 1 a 2 3 4 5 6 7 8 9 +v -in -v +in out a a a +v -in +in out b b b - + b - + 1 2 3 4 -v 8 7 6 5 output a +v non-inverting input a -dc voltage supply +dc volta...

  • Page 14

    A. Set-up 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 t...

  • Page 15

    Dg80-112 19 when all the leds light simultaneously, the battery check is finished. Then the 80-112 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 5. Midi check...

  • Page 16

    Dg80-112 20 (test contents) the dg80-112 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 wh...

  • Page 17: Error Messages

    Error messages dg80-112 21 if an error occurs during operation, one of the following error message numbers will appear on the display. : motor drive error cause: the volume knob has not returned to its assigned position after 20 seconds has elapsed from the start of the recall operation or, the devi...

  • Page 18

    Yamaha [ digital guitar amplifier ] date:1-dec-1998 model dg80-112 midi implementation chart version : 1.0 +----------------------------------------------------------------------+ : : transmitted : recognized : remarks : : function ... : : : : :-------------------+----------------+----------------+-...

  • Page 19

    Circuit boards dg80-112 14 midi in out to dm-cn9 component side ena-vz77180-1/10 3 dm circuit board note : see parts list for details of circuit board component parts..

  • Page 20

    Dg80-112 15 to dm-cn9 pattern side ena-vz77180-2/10 1 dm circuit board note : see parts list for details of circuit board component parts..

  • Page 21

    Dg80-112 16 gain master treble high mid low mid bass time presence feed back reverb level component side component side pattern side vr : cna-v297690-1/10 pn : cna-v297070-1/5 ,2/5 3 1 1 pn circuit board vr circuit board panel layout note : see parts list for details of circuit board component parts...

  • Page 22

    Dg80-112 17 line out line out level component side component side component side component side low input trim output high cna-v297690-1/10 effect send return blend 5/5 4/5 3/5 2/5 1/5 3 main circuit board anr circuit board anf2 circuit board anf circuit board note : see parts list for details of ci...

  • Page 23: Guitar Amplifier

    Contents overall assembly • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 2 pre-main unit • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • ...

  • Page 24: Overall Assembly

    Dg80-112 2 overall assembly pre-main unit : see page 4. Overall cabinet assembly : see page 10..

  • Page 25

    Dg80-112 3 description overall assembly overall assembly overall assembly overall assembly pre-main unit pre-main unit pre-main unit pre-main unit overall cabinet assembly oval head screw washer speaker hexagonal nut oval head tapping screw-1 washer connector assembly name plate name plate name plat...

  • Page 26: Pre-Main Unit

    Dg80-112 4 pre-main unit 100a 40b 40c 40a dm circuit board assembly chassis assembly : see page 8. Front panel assembly : see page 6. Power switch assembly power transformer ac cord assemdly.

  • Page 27

    Dg80-112 5 description pre-main unit pre-main unit pre-main unit pre-main unit front panel assembly front panel assembly front panel assembly front panel assembly chassis assembly chassis assembly chassis assembly chassis assembly bind head screw dm circuit board assembly circuit board angle bracket...

  • Page 28: Front Panel Assembly

    Dg80-112 6 front panel assembly p90 p20 p30 p40 p80 p10 p70 20b 20a p60 p50 p100 pn circuit board assembly vr circuit board assembly.

  • Page 29

    Dg80-112 7 description front panel assembly front panel assembly front panel assembly front panel assembly front panel vr circuit board assembly vr circuit board assembly vr circuit board assembly vr circuit board assembly circuit board circuit board circuit board circuit board angle, motor volime b...

  • Page 30: Chassis Assembly

    Dg80-112 8 chassis assembly anr circuit board assembly 20c 20b 20a 20d.

  • Page 31

    Dg80-112 9 description chassis assembly chassis assembly chassis assembly chassis assembly chassis anr circuit board assembly anr circuit board assembly anr circuit board assembly anr circuit board assembly circuit board circuit board circuit board circuit board sub angle sub angle pan head screw bi...

  • Page 32: Overall Cabinet Assembly

    Dg80-112 10 description overall cabinet assembly cabinet assembly vinyl corner round head wood screw handle assembly front board assembly name plate trus head tapping screw-1 foot flat head wood screw back board shield sheet ref no. 10 20 30 31 40 50 50a 50b 60 61 70 80 part no. V3063000 - - - - aa8...

  • Page 33: Electrical Parts

    Dg80-112 11 description electrical parts circuit board circuit board circuit board circuit board circuit board circuit board circuit board circuit board circuit board circuit board circuit board circuit board circuit board circuit board circuit board circuit board circuit board circuit board circuit...

  • Page 34

    Dg80-112 12 description monolithic ceramic cap. Electrolytic cap. Electrolytic cap. Electrolytic cap.-bp electrolytic cap.-bp monolithic ceramic cap. Ceramic capacitor-sl ceramic capacitor-sl ceramic capacitor-sl ceramic capacitor-sl monolithic ceramic cap. Mylar capacitor mylar capacitor semiconduc...

  • Page 35

    Dg80-112 13 description base post connector diode (chip) lc filter lc filter lc filter lc filter lc filter lc filter ic ic ic ic ic ic ic ic ic ic ic ic ic ic photo coupler ic ic ic ic ic ic ic ic ic ic ic ic ic ic ic ic ic ic ic ic ic ic ic ic din connector chip inductance carbon resistor (chip) ca...

  • Page 36

    Dg80-112 14 description carbon resistor carbon resistor carbon resistor (chip) carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor (chip) carbon resistor (chip) carbon resistor carbon resistor carbon resistor...

  • Page 37

    Dg80-112 15 description carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor motor drive volume motor drive volume trimmer potentiometer motor drive volume trimmer potentiometer motor drive volume trimmer potentiometer motor ...

  • Page 38

    Dg80-112 16 description circuit board circuit board circuit board circuit board monolithic mylar capacitor ceramic capacitor-sl electrolytic cap. Monolithic mylar capacitor ceramic capacitor-sl electrolytic cap. Electrolytic cap. Ph connector assembly diode diode ic phone jack carbon resistor carbon...

  • Page 39

    Dg80-112 17 description carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carb...

  • Page 40

    Dg80-112 18 description ceramic capacitor-f electrolytic cap. Electrolytic cap. Ceramic capacitor-f mylar capacitor mylar capacitor electrolytic cap. Semiconductive cera. Cap. Semiconductive cera. Cap. Base post connector base post connector base post connector xh shield wire xh connector assembly x...

  • Page 41

    Dg80-112 19 description carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor carbon resistor metal oxide film resistor carbon resistor metal oxide film resistor metal oxide film resistor flame proof c. Resistor metal oxide film resistor carbon resistor carb...

  • Page 42

    Dg80-112 20 description carbon resistor (chip) carbon resistor (chip) carbon resistor (chip) carbon resistor (chip) carbon resistor (chip) carbon resistor (chip) carbon resistor (chip) carbon resistor (chip) push switch push switch speaker connector assembly connector assembly power switch assembly ...

  • Page 43

    Op amp to anf-cn502 counter shift registor inverter and d-ff adc digital filter dac dac op amp kec-54161-1/2 ,2/2 regulator op amp regulator to main1/5-cn304 to anf-cn501 power line out level op amp kec-54163-3/5 to main 1/5-cn305 effect blend op amp anr or dsp3 dsp3 dram dram or cpu ram sram sram a...

  • Page 44

    Q a b c d e f g h i j k l m n o p q a b c d e f g h i j k l m n o p 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 to anr-cn403 output to dm-cn101 blend kec-54163-4/5 op amp anf low high op amp kec-54163-5/5 anf2 input to dm-cn4 to dm-cn5 motor driver gain master treble high mid low mid bass ...