Service Manuals, User Guides, Schematic Diagrams or docs for : . Various SM scena Lexicon MPX550 Servicemanual
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8 7 6 5 4 3 2 1
REVISIONS
REV DESCRIPTION DRAFTER Q.C.
CHECKER AUTH.
RWH CW
1 CHANGED PER DCR 010316-00
3/16/01 3/19/01
JV JM
3/16/01 3/16/01
RWH CW
2 CHANGED PER DCR 010515-00
6/15/01 6/26/01
INPUT AMPLIFIER JV JM
6/26/01 6/18/01
D 3 CHANGED PER DCR 010829-00
RWH CW
D
9/7/01 9/10/01
ECM JM
9/11/01 9/7/01
RWH JV
+15VA 4 CHANGED SHTS. 2, 4 & 7 PER DCR 010924-00
9/28/01 10/2/01
J10 ECM JM
FB10 C98 R71 8
4580 9/28/01 10/2/01
5 C94
+ R65
1 3 7
10/25 13.0K
6
2 1% - U10 1.00K 47/16
1%
4
R69 4
C49 13.0K C97
150PF 1% 47PF -15VA R70
R64 R61
C96 10.0K 174
1% 1.00K
1%
1%
R68 33PF A/D CONVERTER
1.50K
J11 1%
1 +5VA +5VA
6 CW 3 C106
LEFT INPUT 5 10K 2200PF
2
INPUT 2
TRIM R102 FB15
3 1 C101 R66 R62 C110 C104
174
4 1%
1.00K
33PF R73 1% 10/16 10/16
R74
C C50 13.0K C102 +15VA 10.0K C111 C105 C
150PF 1% 47PF 1%
8 .1/25 .1/25
2 4580 C95
- R67 AK5383
C103 1
R72 23
3 VA VD 7
+ U10 1.00K 47/16
13.0K 1% 4
FB11 10/25 4 AINL+ ZCAL 6
1% +5VA 5
AINL-
16
-15VA FSYNC
R63 1 19
10.0K BIAS VREFL+ HPFE
1%
C109 C108 11
10/16 .1/25 SMODE2
2
R60 GNDL
10.0K
C92 C93 C107 SMODE1
12
NOTES
10/16 .1/25 3 AD_DATA
1% VCOML
C113 18
.1/25 DFS
26 1 UNLESS OTHERWISE INDICATED, RESISTORS ARE 1/10W
VCOMR
.1/25 28 2 UNLESS OTHERWISE INDICATED, RESISTORS ARE 5%
VREFR+ R76
15 AD_DATA
C115 C114 SDATA [3/B7]
3 UNLESS OTHERWISE INDICATED, CAPACITORS ARE UF/V
10/16 .1/25 100
27 13 CK_FS/
GNDR LRCK [3/B7]
4 DIGITAL ANALOG CHASSIS CHASSIS POWER
14 CK_64FS_I/ GROUND GROUND GROUND SCREW GROUND
+15VA SCLK [3/B7]
25 AINR+
5 [XX/XX] DENOTES [SHEET NUMBER/SECTOR]
J13 24 17 CK_256FS_C
FB12 C129 R98 8 AINR- MCLK [6/B2]
4580 6 LAST REFERENCE DESIGNATORS USED: C134, D29, FB15, J20, Q1,
5 C125
+ R92 22 R102, RP13, SW4, U27, W2, Y2
1 3 7 AGND
10/25 13.0K 21 9 NC
B 2 1%
6
- U27 1.00K 47/16 20
BGND CAL 7 COMPONENTS MARKED WITH
* ARE NOT POPULATED. B
TEST
1% 8 10 AD_CAL/
4
R96 4 DGND RST/ [4/C2]
C51 13.0K C128
150PF 1% 47PF -15VA R97 U21
R75
R91 R88 47K
C127 10.0K 174
1%
1%
1.00K CK_64FS/
R95 1%
33PF DOCUMENT CONTROL BLOCK: #060-14559
1.50K
J12 1%
CK_FS/ SHEET REVISION TITLE
1 1 OF 8 4 INPUT
6 CW 7 C112 2 OF 8 4 DAC
RIGHT INPUT 5 10K 2200PF 3 OF 8 3 LEXICHIP3, DRAM
6
2 4 OF 8 4 uPROC, ROM/RAM, CS, RESET
R102 5 OF 8 3 ENCODERS
3 5 C132 R93 6 OF 8 3 MIDI, DIGITAL AUDIO OUT
INPUT 174
R89
7 OF 8 4 DISPLAY DRIVER
4 1.00K
TRIM 33PF R100 1%
1%
8 OF 8 3 POWER SUPPLY
R101
C52 13.0K C133 +15VA 10.0K
150PF 1% 47PF 1%
8
2 4580 C126
- R94
C134 1
R99
3
+ U27 1.00K 47/16
10/25 13.0K 4 1%
FB13 1% +5VA
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