Service manual hamamatsu, japan 1.42k-0.935 k printed in japan 2001.05 001660 sk contents specifications .............................................................................. 3 panel layout .................................................................................. 4 dimension .........
2 dd-55 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 th...
3 dd-55 specifications drum pads 7 pads (125mm x 4, 88mm x 3), touch sensitive maximum polyphony 32 drum kits 45 preset +1 custom songs 100 tracks 4 (drum 1/drum 2/drum 3/backing) custom song 1 song (approximately 20,000 notes) voices drum voices 192 + gm voices 128 + drum kits 8 functions track on/...
4 dd-55 panel layout 888 888 q w y u t !6 !7 !8 !2 !3 !4 !5 o i !0 !1 r e front panel front panel pedal 2 pedal 1 !0 song button !1 tempo button !2 start/stop button !3 a-b repeat button !4 break/tap button !5 rec button !6 standby/on switch !7 dial !8 drum pads (x7) q demo button w click button e d...
5 dd-55 !9 @0 @1 @2 @3 @4 side panel l side panel r side panel (left) !9 dc in 12v (ac adaptor) jack @0 phones/output jack @1 pedal 2 jack side panel (right) @2 midi in terminal @3 midi out terminal @4 pedal 1 jack 558mm 173.6mm 166.8mm 354.7mm 362mm dimension.
6 dd-55 circuit board layout dd 1/2 dd 2/2 pad assembly pad assembly (l) speaker(l) speaker(r) 160 u220 upper case lower case top view.
7 dd-55 block diagram +5r 28ca1-8819212 midi i/f ic610 tr621 tr622 analog switch ic710, ic750, ic790 dac +5v reg +5v reg +5v reg +3.3v reg stand by on power gate selector +3.3d +3.3d +5a +5d +5d +5d +5a +5d +5d +5a switch matrix 17 pieces led matrix 7seg led 3 digit anode common led lamp 5 pieces tr...
8 dd-55 disassembly procedure [80] lower case [60] upper case encoder [a] (fig. 1) (fig. 4) (fig. 5) (fig. 2) (fig. 3) [160] [160] lower case er case lower case soft cloth 1. Lower case assembly (time required: about 2 min) 1-1 remove the sixteen (16) screws marked [80]. The lower case assembly can ...
9 dd-55 upper case speaker l speaker r dd 1/2 dd 2/2 [130] [130] [135] [135] pad assembly (fig. 7) (fig. 6) [130]: binding head tapping screw-b 3.0x8 mfzn2y (ep600250) [135]: binding head tapping screw-b 4.0x8 mfzn2y (ep640410) upper case needle-nose plyer upper case needle-nose plyer pad assembly p...
10 dd-55 lsi pin discription hg73c205afd (xu947c00) swx00b tonegenerator pin name i/o function pin name i/o function no. No. 1 icn i initial clear 85 cma3 o 2 rfclki i pll clock 86 cma8 o program address bus 3 tm2 i pll control 87 cma2 o 4 avdd_pll power supply 88 crd o read signal 5 avss_pll ground...
11 dd-55 ic block diagram upd63200gs (xm145a00) dac (digital to analog converter) pin name i/o function pin name i/o function no. No. 1 4/8f i 4/8 fs selection 9 r. Ref channel r voltage reference 2 d. Gnd digital ground 10 l. Ref channel l voltage reference 3 16 bit i 16 bit/18 bit selection 11 l. ...
12 dd-55 a a’ midi in midi out ped al 1 to dd 2/2 cn460 dd 1/2 circuit board (component side) component side dd 1/2: 2na-v707790 1.
13 dd-55 to battery to speaker l, r dc in 12v phones/output ped al 2 a a’ component side dd 1/2: 2na-v707790 1.
14 dd-55 pad 1 pad 2 demo clock rec break /tap a-b repeat start /stop hand perc drum1 drum2 pad kit a a’ dd 1/2 circuit board (pattern side) pattern side dd 1/2: 2na-v707790 1.
15 dd-55 pad 3 pad 4 pad 5 pad 6 pad 7 volume backing tempo drum3 drum2 song kit standby/on a a’ pattern side dd 1/2: 2na-v707790 1.
16 dd-55 test program (fig. 1) (fig. 2) (fig. 3) push push on on setting conditions requirements for measurement before starting to measure the unit, make sure you have the following instrumentations and test jigs: measuring instruments: oscilloscope (input impedance, 1m Ω or more; loading, 33 Ω ) l...
17 dd-55 5. Test items test no. Led display test function and judgment criteria 1 001: version displays version for rom. Rom versions are displayed alternately in the led. [displaying the test result] ok, x'xx: ["xx"] ng: ["err"] 2 002: rom check 1 checks the rom. The test result appears on the led....
18 dd-55 30 030: pad check checks the pad. When a pad is tapped, the led's indicate its identification number and tapping power. [displaying the test result] maximum data: 7f minimum data: 18 31 031: pedal 1 check checks the [pedal 1]. Connect the pedal to the [pedal 1] jack. When the pedal is stepp...
19 dd-55 table 1. Sw test item no sw display note no sw display note 1 a-b repeat s01 c2 10 hi-hat s10 a2 2 start/stop s02 c#2 11 backing s11 a#2 3 rec s03 d2 12 pad s12 b2 4 brake/tap s04 d#2 13 kit s13 c3 5 demo s05 e2 14 song s14 c#3 6 click s06 f2 15 tempo s15 d3 7 hand perc. S07 f#2 16 volume s...
20 dd-55 midi imprementation chart yamaha [ digital percussion ] date:07-feb-2001 model dd-55 midi implementation chart version : 1.0 transmitted recognized remarks function... Basic default 1o - 16 1 - 16 channel changed 1 - 16 1 - 16 default 3 3 mode messages x x altered ************** x note 0 - ...
Dd-55 1 parts list note) destination abbreviations a: australian model m: south african model b: british model o: chinese model c: canadian model q: south-east asia model d: german model t: taiwan model e: european model u: u.S.A. Model f: french model v: general export model (110v) h: north europea...
Dd-55 2 overall assembly s10 s20 s30 s40 s50 u30 p10 p20 p30 p40 p50 u20 a b c d e f h h i i g 10 20 50 60 80 30 100 100 160 u100 u130 u135 u135 u110 u220 l110 l100 l100 u200 u210 u140 u10 l10 l50 l30 l40 l60 l80 l80 l70 l90 l90 l20 l20 u40 u95 u50 u80 u70 u60 u90 u10a u10b u10c upper case assembly ...
Dd-55 3 ref no. Part no. Description remarks qty rank rank: japan only *new parts * * * * * * * * * * * * * * * * * * * * * * * * 10 20 30 50 60 80 100 160 u10 u10a u10b u10c u20 u30 u40 u50 u60 u70 u80 u90 u95 u100 u110 u130 u135 u140 u200 u210 u220 l10 l20 l30 l40 l50 l60 l70 l80 l90 l100 l110 p10...
Ref no. Part no. Description remarks qty rank dd-55 4 rank: japan only *new parts * * c0101 c0102 c0103 c0111 c0112 c0113 c0114 c0115 c0121 c0122 c0123 c0124 c0125 c0131 c0132 c0151 c0152 c0191 c0192 c0210 c0310 c0320 c0321 c0401 c0402 c0461 c0462 c0500 c0501 c0502 c0503 c0504 c0505 c0506 c0512 c051...
Dd-55 5 ref no. Part no. Description remarks qty rank rank: japan only *new parts * c0804 c0811 c0812 c0821 c0822 c0831 c0831 c0832 c0832 c0833 c0841 c0841 c0842 c0842 c0843 c0900 c0901 c0902 c0921 c0922 c0923 c0924 c0925 c0926 c0927 c0931 c0932 c0933 c0941 c0942 ca701 cn460 cn461 cn860 cn911 d0410 ...
Ref no. Part no. Description remarks qty rank dd-55 6 rank: japan only *new parts * * d0902 d0931 d0931 d0932 d0932 d0933 d0933 ec460 fz900 hs800 ic100 ic150 ic190 ic210 ic310 ic310 ic310 ic320 ic320 ic320 ic500 ic550 ic610 ic710 ic750 ic790 ic800 ic920 ic930 ic940 is210 j0001 -0003 jk610 jk620 jk63...
Dd-55 7 ref no. Part no. Description remarks qty rank rank: japan only *new parts l0791 l0851 -0853 l0851 -0853 l0900 ld400 ld441 -445 r0000 -0015 r0101 r0102 r0103 r0104 r0113 r0114 r0115 r0121 -0123 r0124 -0127 r0128 r0131 r0132 r0134 r0135 r0136 r0151 r200 -207 r0401 -0404 r0411 -0415 r0421 -0428...
Ref no. Part no. Description remarks qty rank dd-55 8 rank: japan only *new parts * r0732 r0733 r0734 r0735 r0741 r0742 r0743 r0744 r0745 r0753 r0754 r0755 r0763 r0764 r0765 r0773 r0774 r0775 r0783 r0784 r0785 r0801 r0812 r0813 r0822 r0823 r0831 r0832 r0833 r0834 r0841 r0842 r0843 r0844 r0931 r0932 ...
A b c d e f g h i j k 1 2 3 4 5 6 7 8 dd-55 dd-55 dd-55 dd 1/2 dd 2/2 hand dram1 dram2 dram3 backing backing volume rec br./tap volume tempo click demo a-b repeat start /stop kit pad song dram1 hand dram2 dram3 pedal 2 (switch) midi in midi out speaker l speaker r phones/output battery dc in 12v pad...
