Page 1
PHANTOM
+48V
M
M
E
O
A
F
N
I
PEAK & SIGNAL LED
Lo-Z
HA
Hi-Z
PAD SW.
GAIN MID HIGH
EQ
LOW
MAIN
EFFECT
MONITOR
CHANNEL_2..4 AS SAM AS CHANNEL_1
CHANNEL_1
F
I
N
E
T
C
O
T
R
POWER AMP1
PA1
POWER AMP1
INV
MON/MAIN
BRIDGE
SLD/SWA
1
3
2
B
4
6
5
PA2
BRIDGE
POWER AMP2
POWER AMP2
PHANTOM
+48V
LINE1
LINE2
CHANNEL_5
PEAK & SIGNAL LED
DISPLAY
DISPLAY
6
5
MON
MASTER
MON/EFF RTN
V
O
C
A
L
MASTER
L
H
A
L
L
MAIN
EQ
REVERB
S
H
A
L
L
125HZ
250HZ
SLD/SWA
1
3
2
125HZ
250HZ
O
D
N
D
E
L
A
Y
4KHZ
8KHZ
EQ
4KHZ
8KHZ
EFFECT OUT
MIC
HA
+
GAIN
EQ
LOW MID HIGH
MAIN
EFFECT
MAIN/EFF RTN
MONITOR
CHANNEL_6..9 AS SAME AS CHANNEL_5
AUX/IN
1
TAPE/IN
2
AUX IN_LEVEL
SUM
TAPE IN_LEVEL
REC. OUT
MAIN OUT
MONITOR OUT
B
4
FOOT/SW
EFFECT/OUT
M
O
E
N
F
I
F
M
T
E
A
O
C
I
R
T
N
Title
Size Document Number REV
B BLOCK.SCH A
Date: April 14, 2000 Sheet 1 of 20
PX900DLX BLOCK DIAGRAM
CRATE
Page 2
PLUG AC FEMALE
Lo-Z
+48V
47uF/63V
JK102
PHONEJACK STEREO
Hi-Z
JK101
R104
390 1/4W
C101
G1
G1
Q101
C2240
R114
8.2K#
G2
G_LED
G2
G_LED
2
1
VR107
10K05C
GAIN
R112
3
102pF
C126
R117
2.2K#
Q102
C2240
22
C107
C108
470uF/10V
470pF
8.2K#
R115
C105
470pF
C104
470pF
+48V
+15V
-15V
R107
10
R111
10
+15V
R116
2.2K#
R106
10
R110
10
C106
470pF
-15V
+48V
22uF/16V LN
C136
R109
4.7K#
R108
4.7K#
+15V
-15V
C137
R135
100K
3.9K#
R134
100K
3.9K#
R133
R132
C103
10uF/63V LN
R103
6.8K#
R102
6.8K#
C102
10uF/63V LN
10uF/25V
10uF/25V
5.11K#
C121
C120
R162
3-2+
1
R101
100K
2
SW101A
1
3
R160
5.11K#
R161
511#
SW101B
4
6
5
22uF/16V LN
PAD SW:TCH
DPDT
R?
100K
R?
100K
+15V
R152
1K
Q106
MPSA13
R119 47K
C109
56pF
C111 56pF
-15V
2
3
+15V
C110
100pF
R118
47K
0.01uF
4
IC101A
8
0.01uF
LED101
Q105
2SC1815
C123
1
4558
C122
R151
270K
C112
10uF/25V
R153
1M
R150
2.2K
1N4148
D101
C135
0.1uF
VR103
50KB
HIGH
C116
VR102
50KB
MID
0.015uF
0.0022uFM
C114
VR101
50KB
LOW
C113
0.027uFM
C115
0.022uF
R127
3.9K
R126
10K
R124
3.3K
R122
2.7K
R120
10K
R125 3.3K
R123 2.7K
+15V
C117
100pF
3
2
-15V
C118 27pF
R121 10K
R131
VR106
20KA
LEVEL
VR105
20KA
EFF
18K
R129
18K
R130
18K
VR104
20KA
MON
R128
C124
0.01uF
C125
0.01uF
2SC2878
C119
47uF/25V
220
Q103
R139
22K
IC102A
4558
8
1
4
48V_MUTE
D102
1N4148
MON
MON
AIN
AIN
EFF
EFF
Title
Size Document Number REV
B CH_1.SCH A
Date: April 14, 2000 Sheet 2 of 20
CRATE
PX900DLX CH_1 IN/OUT
Page 3
PLUG AC FEMALE
Lo-Z
+48V
47uF/63V
JK202
PHONEJACK STEREO
Hi-Z
JK201
R204
390 1/4W
C201
G1
G1
470pF
8.2K#
+15V
R252
1K
Q206
MPSA13
C210
C207
R215
100pF
R218
47K
LED201
Q205
2SC1815
R219 47K
C211 56pF
6
5
C209
56pF
R251
270K R250
IC101B
4558
7
10uF/25V
R253
1M
2.2K
D201
1N4148
C212
C235
0.1uF
Q201
C2240
R214
8.2K#
G2
G_LED
G2
G_LED
2
1
VR207
10K05C
GAIN
R212
22
3
C226
470uF/10V
102pF
R217
2.2K#
Q202
C2240
C208
C205
470pF
C204
470pF
+48V
+15V
-15V
R207
10
R211
10
+15V
R216
2.2K#
R206
10
R210
10
C206
470pF
-15V
+48V
R209
4.7K#
R208
4.7K#
+15V
-15V
C236
R233
3.9K#
R235
100K
3.9K#
R234
100K
R232
C203
10uF/63V LN
R203
6.8K#
R202
6.8K#
C202
10uF/63V LN
C221
10uF/25V
10uF/25V
5.11K#
C220
R262
3-2+
1
R201
100K
2
SW201A
1
3
22uF/16V LN
R260
5.11K#
R261
511#
SW201B C237
4
6
5
22uF/16V LN
PAD SW:TCH
R236
100K
R237
100K
VR203
50KB
HIGH
C216
VR202
50KB
MID
0.015uF
0.0022uFM
C214
VR201
50KB
LOW
C213
0.027uFM
C215
0.022uF
R227
3.9K
R226
10K
R224
3.3K
R222
2.7K
R220
10K
R225 3.3K
R223 2.7K
C217
100pF
5
6
R221 10K
R231
VR205
18K
R229
18K
20KA
EFF
R230
18K
VR204
20KA
MON
IC102B
4558
7
C218
27pF
48V_MUTE
R228
220
R239
22K
C219
47uF/25V
Q203
2SC2878
VR206
LEVEL
20KA
D202
1N4148
MON
MON
AIN
AIN
EFF
EFF
Title
Size Document Number REV
B CH_2.SCH A
Date: April 14, 2000 Sheet 3 of 20
CRATE
PX900DLX CH_2 IN/OUT
Page 4
PLUG AC FEMALE
Lo-Z
+48V
47uF/63V
JK302
PHONEJACK STEREO
Hi-Z
JK301
R304
390 1/4W
C301
G1
G1
Q301
C2240
R314
8.2K#
G2
G_LED
G2
G_LED
2
3
1
VR307
10K05C
GAIN
R312
22
C326
470uF/10V
102pF
R317
2.2K#
Q302
C2240
C307
C308
470pF
R315
8.2K#
+15V
R352
1K
Q306
MPSA13
R319 47K
C311 56pF
C310
100pF
R318
47K
-15V
2
3
+15V
0.01uF
C309
56pF
0.01uF
4
8
C323
IC103A
4558
C322
LED301
Q305
2SC1815
1
10uF/25V
R351
270K
C312
R353
1M
R350
2.2K C335
D301
1N4148
0.1uF
C305
470pF
C304
470pF
+48V
+15V
-15V
R307
10
R311
10
+15V
R316
2.2K#
R306
10
R310
10
C306
470pF
-15V
+48V
4.7K#
+15V
-15V
C336
R309
R308
4.7K#
2
SW301A
1
R337
100K
3
R360
5.11K#
R361
511#
6
5
PAD SW:TCH
R336
100K
SW301B
DPDT
22uF/16V LN
C337 22uF/16V LN
4
C303
3-2+
1
10uF/63V LN
R303
6.8K#
R301
100K
R302
6.8K#
R362
5.11K#
C302
10uF/63V LN
C321
R333
3.9K#
10uF/25V
R335
100K
C320
R332
3.9K#
10uF/25V
R334
100K
VR303
50KB
HIGH
C316
VR302
50KB
MID
0.015uF
0.0022uFM
C314
VR301
50KB
LOW
C313
0.027uFM
R326
10K
C315
0.022uF
R327
3.9K
R324
3.3K
R322
2.7K
R320
10K
R325 3.3K
R323 2.7K
+15V
C317
100pF
3
2
-15V
C318
R321
R331
VR305
18K
R329
18K
20KA
EFF
R330
18K
VR304
20KA
MON
48V_MUTE
C324
0.01uF
R328 220
C325
0.01uF
R339
22K
C319
47uF/25V
Q303
2SC2878
VR306
LEVEL
20KA
IC104A
8
4558
1
4
27pF
10K
D302
1N4148
MON
MON
AIN
AIN
EFF
EFF
Title
Size Document Number REV
B CH_3.SCH A
Date: April 14, 2000 Sheet 4 of 20
CRATE
PX900DLX CH_3 IN/OUT
Page 5
PLUG AC FEMALE
Lo-Z
+48V
47uF/63V
JK402
PHONEJACK STEREO
Hi-Z
R404
390 1/4W
C401
JK401
G1
G1
Q401
C2240
R414
8.2K#
G2
G_LED
G2
G_LED
2
1
VR407
10K05C
GAIN
R412
22
3
C426
470uF/10V
102pF
R417
2.2K#
Q402
C2240
C407
C408
470pF
R415
8.2K#
+15V
R452
1K
Q406
MPSA13
C410
100pF
R418
47K
C409
56pF
LED401
2SC1815
R419 47K
C411 56pF
IC103B
6
5
4558
Q405
7
R451
270K
10uF/25V
R453
1M
R450
2.2K C435
D401
1N4148
C412
0.1uF
C405
470pF
C404
470pF
+48V
+15V
-15V
R407
10
R411
10
+15V
R416
2.2K#
R406
10
R410
10
C406
470pF
-15V
C403
3-2+
1
10uF/63V LN
R403
6.8K#
R401
100K
R402
6.8K#
R462
5.11K#
C402
10uF/63V LN
R433
C421
3.9K#
10uF/25V
R435
100K
C420
10uF/25V
R432
3.9K#
R434
100K
2
SW401A
1
3
R460
22uF/16V LN
5.11K#
R461
511#
SW401B
4
6
5
R436
100K
R437
100K
+48V
+15V
-15V
C436
R409
4.7K#
C437 22uF/16V LN
R408
4.7K#
VR403
50KB
HIGH
C416
VR402
50KB
MID
0.015uF
0.0022uFM
C414
VR401
50KB
LOW
C413
0.027uFM
R426
10K
C415
0.022uF
R427
3.9K
R424
3.3K
R422
2.7K
R420
10K
R425 3.3K
R423 2.7K
C417
100pF
5
6
R421
10K
R431
VR405
18K
R429
18K
20KA
EFF
R430
18K
VR404
20KA
MON
IC104B
4558
7
C418
27pF
48V_MUTE
R428
220
R439
22K
C419
47uF/25V
Q403
2SC2878
VR406
LEVEL
20KA
D402
1N4148
MON
MON
AIN
AIN
EFF
EFF
Title
Size Document Number REV
B CH_4.SCH A
Date: April 14, 2000 Sheet 5 of 20
CRATE
PX900DLX CH_4 IN/OUT
Page 6
+48V
JK502
PHONEJACK
LINE1
JK503
PHONEJACK
LINE2
PLUG AC FEMALE
Lo-Z
R520
10K
47uF/63V
R524
3.3K
JK501
R504
390 1/4W
C501
G1
C505
470pF
+48V
+15V
-15V
R511
10
+48V
R509
4.7K#
+15V
-15V
C503
R503
6.8K#
R502
6.8K#
10uF/63V LN
3-2+
1
R501
100K
R507 10
R505
4.7K
+15V
G1
G2
G_LED
2.2K#
G2
G_LED
R516
C527 102pF
R517
2.2K#
+15V
R552
1K
Q506
MPSA13
LED501
2SC1815
Q505
R553
1M
R551
270K
R550
2.2K
C535
0.1uF
R506 10
C502
10uF/63V LN
CRATE
C512
10uF/25V
D501
1N4148
R510
10
R508
R532
18K
4.7K#
C504
470pFC520
10uF/25V
R534
100K
C521
VR503
C514
R533
18K
C524
10uF/25V
50KB
HIGH
C516
0.0022uFM
C515
0.022uF
R527
3.9K
R526
10K
10uF/25V
R535
100K
R522
2.7K
0.015uF
VR502
50KB
MID
R521
VR501
50KB
LOW
0.027uFM
C513
10K
VR507
100KA
GAIN
R537
1.8K
R525 3.3K
R523 2.7K
C517
100pF
C518
22UF/16V
3
2
27pF
C522
100pF
IC105B
R538
220K
C628
0.01uF
R528
R539
4558
7
VR504
20KA
MON
C519
47uF/25V
220
2SC2878
VR506
20KA
LEVEL
Q503
22K
5
6
C536
IC106A
8
4558
C523
15pF
1
4
0.01uF
C629
48V_MUTE
470pF
Q501
C2240
R512
2.2K
C506
R514
8.2K#
VR505
20KA
EFF
470uF/10V
C2240
C508
Q502
C507
470pF
R515
8.2K#
R513 18K
R531
18K
R529
18K
R530
18K
C510
100pF
R518
-15V
10K#
MON
AIN
EFF
R519
C509
100pF
D503
1N4148
D502
1N4148
MON
AIN
EFF
Title
Size Document Number REV
B CH_5.SCH A
Date: April 14, 2000 Sheet 6 of 20
C511 100pF
-15V
0.01uF
4
2
3
8
+15V
0.01uF
10K#
C525
IC105A
1
4558
C526
PX900DLX CH_5 IN/OUT
Page 7
+48V
JK602
PHONEJACK
LINE1
JK603
PHONEJACK
LINE2
PLUG AC FEMALE
Lo-Z
R620
10K
47uF/63V
R624
3.3K
JK601
R604
390 1/4W
C601
G1
G1
VR605
20KA
EFF
470uF/10V
C627 102pF
2.2K#
C2240
C608
R617
Q602
C607
470pF
R615
8.2K#
R613 18K
+15V
R652
1K
Q606
MPSA13
C610
100pF
C609
R618
-15V
R631
18K
R629
18K
R630
18K
10K#
100pF
D603
1N4148
D602
1N4148
MON
AIN
EFF
Title
Size Document Number REV
Date: April 14, 2000 Sheet 7 of 20
LED601
Q605
2SC1815
C611 100pF
-15V
0.01uF
4
2
3
8
+15V
0.01uF
MON
AIN
EFF
10K#
C625
IC107A
1
4558
C626
PX900DLX CH_6 IN/OUT
R619
B CH_6.SCH A
R653
1M
R651
270K
CRATE
1N4148
C612
10uF/25V
R650
2.2K
D601
C635
0.1uF
G2
G2
R616
C606
Q603
2SC2878
VR604
VR606
LEVEL
G_LED
Q601
C2240
R612
2.2K
R614
8.2K#
20KA
MON
20KA
G_LED
+15V
2.2K#
470pF
7
C619
47uF/25V
R639
22K
C605
470pF
C604
470pFC620
+48V
+15V
-15V
R611
10
R610
10
IC107B
4558
5
6
C623
15pF
R638
220K
R628
220
+48V
C636
R609
4.7K#
R608
4.7K#
IC106B
4558
7
48V_MUTE
C622
100pF
+15V
-15V
C603
0.015uF
VR602
50KB
MID
R634
100K
R635
100K
VR603
0.027uFM
R603
6.8K#
R602
6.8K#
10uF/25V
10uF/25V
50KB
HIGH
C614
VR601
50KB
LOW
C613
10uF/63V LN
10uF/63V LN
C621
C616
0.0022uFM
R626
10K
C602
C615
0.022uF
3-2+
1
R601
100K
R622
2.7K
R632
18K
R633
18K
10uF/25V
R627
3.9K
C624
R621
10K
R607 10
R605
4.7K
R606 10
GAIN
VR607
100KA
R637
1.8K
R625 3.3K
R623 2.7K
C617
100pF
C618 27pF
22UF/16V
5
6
Page 8
JK702
PHONEJACK
LINE1
JK703
PHONEJACK
LINE2
+48V
R720
PLUG AC FEMALE
Lo-Z
47uF/63V
10K
R724
3.3K
JK701
R704
390 1/4W
C701
G1
G1
470uF/10V
VR704
20KA
MON
VR706
20KA
LEVEL
C727 102pF
2.2K#
C2240
C708
R717
Q702
C707
470pF
R715
8.2K#
R713 18K
R731
18K
48V_MUTE
VR705
20KA
EFF
+15V
R752
1K
MPSA13
C710
100pF
C709
R718
-15V
10K#
MON
MON
2SA970
R729
18K
AIN
EFF
R730
18K
100pF
D703
1N4148
D702
1N4148
Q803
D816
12V
AIN
EFF
LED701
Q705
2SC1815
Q706
C711 100pF
-15V
0.01uF
4
2
3
8
+15V
0.01uF
R890 22K
C890
10uF/63V
10K#
IC108A
4558
D815
IN4001
PX900DLX CH_7 IN/OUT
R719
R891
100K
Title
Size Document Number REV
B CH_7.SCH A
Date: April 14, 2000 Sheet 8 of 20
R753
1M
R751
270K
C725
1
C726
CRATE
C712
10uF/25V
+48V
+15V
-15V
MON
AIN
EFF
D701
1N4148
R750
2.2K
HEADER 10
P1-5 TO CN803
P6-7 TO CN801
P8-10 TO CN802
JP701
C735
0.1uF
1
2
3
4
5
6
7
8
9
10
G2
G2
G_LED
+15V
2.2K#
470pF
7
R728
C719
47uF/25V
220
R739
22K
G_LED
R716
Q701
C2240
R712
2.2K
C706
R714
8.2K#
Q703
2SC2878
C705
470pF
C704
470pFC720
+48V
+15V
-15V
R711
10
R710
10
IC108B
4558
5
6
C723
15pF
R738
220K
48V_MUTE
+48V
R709
4.7K#
R708
4.7K#
C728
0.01uF
8
4
IC109A
4558
C729
0.01uF
+15V
-15V
C722
100pF
1
C703
10uF/25V
10uF/25V
0.015uF
VR702
50KB
MID
R734
100K
R735
100K
0.027uFM
10uF/63V LN
R703
6.8K#
R702
6.8K#
C702
10uF/63V LN
R732
C721
VR703
50KB
HIGH
C716
0.0022uFM
C714
C715
0.022uF
R726
10K
VR701
50KB
LOW
C713
3-2+
1
R701
100K
R722
2.7K
18K
R733
18K
C724
10uF/25V
R727
3.9K
R721
10K
R707 10
R705
4.7K
R706 10
R737
1.8K
R725 3.3K
R723 2.7K
C717
100pF
C718 27pF
VR707
100KA
GAIN
C736
22UF/16V
+15V
3
2
-15V
Page 9
+48V
JK902A
PHONEJACK
LINE1
JK903A
PHONEJACK
LINE2
R920A
10K
JK901A
PLUG AC FEMALE
Lo-Z
R904A
390 1/4W
47uF/63V
R924A
3.3K
C901A
G1
C905A
470pF
R911A
+48V
+15V
-15V
10
+48V
4.7K#
R909A
+15V
-15V
C903A
R902A
6.8K#
R903A
6.8K#
10uF/63V LN
3-2+
1
R901A
100K
R905A
4.7K
R907A
10
+15V
G1
G2
G_LED
R916A
2.2K#
C927A
R917A
2.2K#
102pF
+15V
R952A
1K
Q906A
MPSA13
2SC1815
LED901A
Q905A
R951A
270K
R953A
1M
R950A
2.2K
C935A
0.1uF
G2
G_LED
R906A 10
C902A
10uF/63V LN
R922A
2.7K
VR902A
0.015uF
50KB
MID
R934A
100K
R935A
100K
VR903A
0.027uFM
10uF/25V
10uF/25V
50KB
HIGH
C914A
50KB
LOW
C913A
C921A
C916A
0.0022uFM
C915A
0.022uF
R926A
10K
R932A
18K
R933A
18K
10uF/25V
R927A
3.9K
R921A
C924A
D903A
1N4148
D902A
C911A
R919A
10K#
100pF
0.01uF
4
8
IC111A
4558
C925A
1
C926A
-15V
2
3
+15V
0.01uF
R925A
GAIN
VR907A
100KA
R937A
1.8K
R910A
4.7K#
C936A
22UF/16V
R908A
C922A
100pF
C904A
470pFC920A
10
IC111B
4558
5
6
C923A
15pF
R938A
7
220K
470pF
C906A
Q901A
C2240
R914A
8.2K#
R912A
2.2K
470uF/10V
C908A
C2240
Q902A
R913A
C907A
470pF
R915A
8.2K#
C910A
100pF
C909A
R918A
-15V
10K#
100pF
18K
3.3K
1N4148
R923A
10KVR901A
100pF
C917A
2.7K
C918A
R931A
VR904A
20KA
MON
8
IC112A
4558
3
2
1
R928A
4
27pF
R939A
C919A
47uF/25V
220
VR906A
20KA
LEVEL
Q903A
2SC2878
22K
VR905A
20KA
EFF
48V_MUTE
18K
R929A
R930A
MON
MON
18K
AIN
AIN
EFF
EFF
18K
Title
Size Document Number REV
B CH_8.SCH A
Date: April 14, 2000 Sheet 9 of 20
PX900LX CH_8 IN/OUT
CRATE
1N4148
C912A
10uF/25V
D901A
Page 10
+48V
JK902
PHONEJACK
LINE1
JK903
PHONEJACK
LINE2
PLUG AC FEMALE
Lo-Z
R920
10K
47uF/63V
3.3K
R924
JK901
R904
390 1/4W
C901
G1
G1
VR905
20KA
470uF/10V
EFF
C908
C927 102pF
R917
2.2K#
Q902
C2240
R913 18K
C907
470pF
R915
8.2K#
+15V
R952
1K
Q906
MPSA13
C910
100pF
C909
R918
-15V
R931
18K
R929
18K
R930
18K
10K#
100pF
D903
1N4148
D902
1N4148
MON
AIN
EFF
Title
Size Document Number REV
Date: April 14, 2000 Sheet 10 of 20
LED901
Q905
2SC1815
C911 100pF
-15V
0.01uF
4
2
3
8
+15V
0.01uF
MON
AIN
EFF
10K#
C925
IC110A
1
4558
C926
PX900LX CH_9 IN/OUT
R919
B CH_9.SCH A
R953
1M
R951
270K
CRATE
1N4148
C912
10uF/25V
R950
2.2K
D901
C935
0.1uF
G2
G2
R916
C906
Q903
2SC2878
VR904
VR906
LEVEL
G_LED
Q901
C2240
R912
2.2K
R914
8.2K#
20KA
MON
20KA
G_LED
+15V
2.2K#
470pF
7
C919
47uF/25V
R939
22K
C905
470pF
C904
470pFC920
+48V
+15V
-15V
R911
10
R910
10
IC110B
4558
5
6
C923
15pF
R938
220K
R928
220
+48V
C903
0.015uF
VR902
50KB
MID
R934
100K
R935
100K
0.027uFM
10uF/25V
10uF/25V
VR903
50KB
HIGH
C914
50KB
LOW
6.8K#
R902
6.8K#
C913
R903
C921
10uF/63V LN
C902
10uF/63V LN
C916
0.0022uFM
C915
0.022uF
R926
10K
3-2+
1
R901
100K
R922
2.7K
R932
18K
R933
18K
10uF/25V
R927
3.9K
C924
R921
10KVR901
R907 10
R905
4.7K
R906 10
GAIN
VR907
100KA
R937
1.8K
R925 3.3K
R923 2.7K
C917
100pF
C918 27pF
22UF/16V
5
6
+15V
-15V
R909
4.7K#
R908
4.7K#
C922
100pF
C936
IC112B
4558
7
48V_MUTE
Page 11
JK801
G_LED
G_LED
+48V_IN
TAPE IN
V+_LED
+48V_IN
AUX
AUX
1
2
PHONEJACK
AUX IN
JK802A
RCA JACK*4
JK802B
RCA JACK*4
V+_LED
VR819
AUX IN
AUX AUX
R825
8.2K
R826
8.2K
TAPE IN
R838
1K
POWER LED
SW802A
3
2
1RSW2-2
PHANTOM POWER SW.
SW802B
6
5
1RSW2-2
PHANTOM POWER SW.
R828
AUX
R827
36K
R829
18K
POWER LED
36K
LIMIT_1
LIMIT_2
C855
100uF/16V
LIMIT_1
LIMIT_2
C857
220pF
AUX
R839
R847
R830
6
5
AUX
10K
R839A
3.3K
10K
R847A
3.3K
C856 6pF
IC807B
2068LD
220K
C860
7
10uF/25V
R824
18K
R831
100K
AIN
AIN
BUS
2SC1815BL
2SC1815BL
C867
1uF/50V
C875
1uF/50V
R840
2K2
R846
2K2
Q801
Q802
LIMIT1_LED
LIMIT1_LED
D806
V+_LED
LED
D814
V+_LED
LED
V+_LED
V+_LED
D807
LED
JP803
1
2
3
4
5
HEADER 5
AMP1ÂG-BUS
MON/MAIN
G-BUS
AMP1
TO OUTPUT PCB CN2
JP804
1
2
3
4
5
6
7
8
9
HEADER 9
LIMIT_2
LIMIT_1
V+_LED
G_LED
+48V_IN
+15V
G_BUS
G_BUS
-15V
TO PWR_AMP PCB CN804
20KA
VR820
20KA
AUX
D808
LED
R835
1
1K
4
+48V
Title
Size Document Number REV
B AUX_TAP.SCH A
Date: April 14, 2000 Sheet 11 of 20
PX900DLX AUX/TAP IN
CRATE
Page 12
AIN
EFF_R
IC806
M5229P
0.082M
C840
0.82M
470pF
C841
JK802C
RCA JACK*4
R814
1.5K
R807 18K
C809 100pF
AIN
EFF_R
EFF RTN
VR802
C808
220pF
R806
20KA
10K
R805
27K
BUS BUS
IC801B
6
5
7
2068LD
47uF/25V
MAIN MAST
C811
C814
VR803
10uF/25V
20KA
R808
18K
R813
1.5K
R809
220
BUSBUS
BUS BUS
R812
3.3K
R832
R823
3.3K
C837
1
1
6
7
V
O
U
T
I
N
N
F
1
1
1
2
C842
0.039M
V
V
I
I
N
N
+
-
I
N
I
N
F
N
2
2
3
3
4
5
C844
0.018M
1
5
N
I
F
N
3
4
6
C846
0.01M
+15V -15V
C838
103pF
N
I
N
F
N
F
4
5
5
8
C848
0.0047M
1
9
0
0.0022M
7
C839
103pF
2
1
1
8
+
V
C
C
I
N
6
1
1
C850
0
9
-
G
V
N
C
D
C
N
I
N
F
N
F
6
7
7
1
1
1
2
3
4
C852
0.0012M
V+_LED
IC808B
4558
5
6
7
680
1/4W
C863
100uF/25V
D801
C854
22uF/25V
BUS
D802
GR
IC804
BA6137
GR
1 2 3 4 5 6 7 9
D1 D2 D3 D4 GND
TVR801
50KA
C843
C845
0.47M
0.22M
C847
0.1M
0.047M
C851
C849
0.027M
0.012M
C853
C878
100P
R849 33K
VR812
20KW
125HZ
VR813
20KW
250HZ
VR814
500HZ
VR816
VR817
20KW
20KW
20KW
2KHZ
8KHZ
4KHZ
VR815
20KW
20KW
1KHZ
VR818
R848
33K
-15V
IC808A
4
4558
2
3
+15V
1
8
C877
103pF
22uF/25V
C880
C876
103pF
C815
330pF
C861
22uF/25V
47uF/25V
R815
1.2K
BUS
R816
1.2K
BUS
R810
4.3K
D6 AMP VCC
R834
1K
C866
AMP1-
R851
100K
C858
+15V
3
2
-15V
103pF
IC807A
8
2068LD
C859
4
103pF
R811
10K
BUS
1
BUS
C816 68pF
D803
YE
D804
YE
D805
YE
+15V
C865
OUT
8
IN
100uF/25V
R837 560
R836
100K
MAIN
MAIN
AMP1-
Title
Size Document Number REV
B MAIN.SCH A
Date: April 14, 2000 Sheet 12 of 20
1
BUS
JK802D
RCA JACK*4
2
BUS
C862
22uF/25V
R833
10K
PHONEJACK
MAIN
AMP1
PX900DLX MAIN/EQ/DISPLAY
MAIN OUT
MAIN-IN
C864
10uF/25V
JK804
CRATE
G_LED
G_LED
MAIN-IN
Page 13
MON
EFF_L
MON
EFF_L
MON/EFF RTN
VR801
R804
C806 100pF
R803
20KA
10K
R802
27K
BUSBUS BUS
220pF
2
3
C807
BUS
18K
G_LED
C813
IC802A
4
2068LD
1
8
C812
103pF
103pF
BUS
C810
47uF/25V
VR804
20KA
MON/MAST
BUS
C817
10uF/25V
BUS
BUS
+15V
R818
220
R817
18K
G_LED
+15V
330pF
C818
R819
4.3K
IC803B
5
4558 C868
6
R820
10K
C819
68pF
7
22uF/25V
IC805
M5229P
0.082M
470pF
C823
0.82M
SW801A
R821
3.3K
IC803A
4558
V+_LED
C869
103pF C871
1
C870
103pF
MON-IN
V+_LED
N
F
5
1
0
0.0022M
0.027M
-15V+15V
C822
103pF
2
1
1
8
+
V
C
C
I
N
6
1
1
C833
C834
VR810
20KW
4KHZ
N
F
6
1
2
0.0012M
0.012M
0
9
-
G
V
N
C
D
C
I
N
N
F
7
7
1
1
3
4
C835
C836
VR811
20KW
8KHZ
+15V
8
3
2
4
-15V
R822
3.3K
C820
1
1
1
7
V
O
U
T
I
N
N
F
1
1
1
2
C825
0.039M
C824
C826
0.47M
VR805
VR806
20KW
20KW
250HZ
125HZ
5
6
V
V
I
I
N
N
+
-
I
N
I
N
2
N
F
N
F
2
3
3
3
4
5
6
C827
C829
0.018M
0.01M
C828
0.22M
VR807
20KW
500HZ
C821
103pF
I
N
I
N
F
N
4
4
5
7
8
9
C831
0.0047M
C830
C832
0.1M
0.047M
VR808
VR809
20KW
20KW
2KHZ
1KHZ
2
1
3
1RSW2-2
R845
680
4/1W
C873
100uF/25V
22uF/25V
SW801B
5
6
1RSW2-2
TVR802
50KA
C879 47uF/25V
4
C881
22uF/25V
BUS
MON-IN
MAIN-IN
D809
GR
IC809
BA6137
BUS
D810
GR
1 2 3 4 5 6 7 9
D1 D2
R843
1K
R850
100K
BUS
MON/MAIN
R852
100K
D811
YE
GNDD3 D4 D6 AMP
R841
560
MAIN-IN
D812
YE
VCC
MON
8
IN
JK803
MONITOR OUT
PHONEJACK
Title
Size Document Number REV
B MONITOR.SCH A
Date: April 14, 2000 Sheet 13 of 20
OUT
D813
YE
+15V
C874
100uF/25V
R842
10K
CRATE
PX900DLX MONITOR/EQ/DISPLAY
C872
10uF/25V
Page 14
HEADER 5
HEADER 2
HEADER 3
EFF
CN803
CN802
CN801
1
2
3
4
5
1
2
1
2
3
JP1101
HEADER 8
220pF
1
2
3
4
5
6
7
8
CN1103
1
2
3
4
4 HEADER
+48
+48V
+15
+15V
-15
-15V
G-LED
BUS
MON
MON
BUS
AIN
AIN
EFF
EFF
BUS
R801 33K
C801 100pF
-15V
4
IC801A
2
3
C802
BUSBUS
G_LED
EFF_MIX
+15V
-15V
EFF_L
EFF_R
BUS
EFF_OUT
G_EFF
FOOT_1
FOOT_2
2068D
8
+15V
G_LED
P1-4 TO CN804
P5-8 TO CN805
EFF L
EFF R
103pF
103pF
EFF MIX
+15V
-15V
C804
BUS
C803
10uF/25V
1
C805
BUS
+15V
1
IC1101A
4558
-15V
G_BUS
EFF L
G_BUS
EFF_R
BUS
8
4
C1121
0.01uF
BUS
EFF_MIX
C1120
0.01uF
3
2
CN804
HEADER 4
CN805
HEADER 4
BUS
5
6
C1112
BUS
EFF
0.027uFM
R1101
18K
BUS
EFFECT OUT PCB
==============
R1102
C1103
100pF
220
R1108
4.3K
EFF
IC1102B
4558 R1106
7
R1112
1K
C1114
3900pF
R1115
1K
C1118
3900pF
IC1101B
4558
5
6
R1107
4.7K
BUS BUS BUS
C1110
3300pF
R1113
C1115
1K
22uF/16V
R1114
100K
BUSBUS
R1116
1K
R1117
100K
C1104 68pF
R1111
6.8K
R1105
2.2K
C1107
0.0015uFM
RV_OUT_L
C1119
22uF/16V
7
10K
RV_OUT_R
C1102
47uF/25V
+15V
3
2
-15V
R1109
100K
EFF
C1108
0.01uF
8
IC1102A
4558
1
4
C1109
0.01uF
JK1101
PHONEJACK
EFFECT/OUT
PHONEJACK STEREO SW
R1103
560
BUS
EFF_IN
RV_OUT_L
RV_OUT_R
FOOT_1
FOOT_2
FOOT PCB
============
EFFECT/OUT
EFF
JK1102
FOOT SW.
EFFECT/OUT
EFF_IN
+15V
-15V
TO DIGITAL PCB
CON DIGITAL JP1001
BUS
EFF_OUT
G_EFF
FOOT_1
FOOT_2
BUSBUS
CN1102
HEADER 7
FOOT_2
FOOT_1
EFF_IN
CN1104
1
2
HEADER 2
1
2
3
4
5
6
7
HEADER 4
JP1103
1
2
3
4
1
2
3
4
1
2
3
4
EFF_MIX
BUS
R1104
2.2K
0.0015uFM
4558
+15V
-15V
C1106
C1113
0.01uF
3300pF
10uF/25V
C1105
8
4
C1101
BUS
5
6
0.01uF
3
2
BUS
JP01
3
2
1
HEADER 3
CN01
C1111
22uF/16V
C1116
R1110
3
2
1
HEADER 3
2.2K
7
IC1103B
C1117
1
IC1103A
4558
VR1101
20KA
EFFECT/OUT
EFF_MIX
EFF_L
BUS
22uF/16V
EFF_R
BUS
Title
Size Document Number REV
B EFFECT.SCH A
Date: April 14, 2000 Sheet 14 of 20
CRATE
PX900DLX EFFECT SUM
Page 15
LL1_L
LL2_L
LIMIT1
LL1_L
100uF/16V
LL2_L
C31
R40
0.1uF/100V
33
D21
R31
100
R32
100pF/200V
0.001uF 50V
R35
820
10uF/25V
820
C25
C26
R34
1K
TR4
JE802
C30
C24
D27
+-
R24
PB154M
R74
1K
-15V
R73
1K
2
3
+15V
100uF/25V
4
MC34081
100uF/25V
7
220pF
C22
IC5
10
C23
6
C21
-15V
R25
10K
R26
3.9K
R29
100K
1N4148
TR1
2N5551
D12
R33
68
TR3
JE350
R38
4.7 1/2W
47uF/100V
D14
1N4148
TR6
BC550
C28
C33
0.1uF 50V
R45
20K
C32
470pF/200V
2.2K
TR8
2SC4793
R41
R42
2.2K
R43
2.2K
D16
1N4004
6.8V 1/2W
TR10
RFP50N06
2SC5200
R44
100 1/2W
ZD7
0.1 5W
1N4148
R57
1K
R56
51
Q7
2SA1015
R58
10K
TR11
10 2W
L1 1uH
R59
10 2W
R62
R46
0.001uF
C48
0.068UF/100V
C37
200pF
R60
51
R61
270K
C38
390pF/200V
D22
FR107
R68
18K
ZD10
R69
30K
7.5V 1/2W
C41
1N4148
15K 1/2W
D23
R67
C39
100uF/16V
D25
1N4004
D24
LT6A04
AMP_R OUT
C42
0.1uF/100V
AMP_L OUT
+60V
+30V
PGND
C35
6.8V 1/2W
R47
20K
D17
1N4004
R50
2.2K
2SA1837
47uF/100V
ZD8
R48
2.2K
R51
100 1/2W
TR9
R53
33
C29
0.1 5W
TR12
2SA1943
RFP50N06
15K 1/2W
R49
TR13
FR107
R54
ZD9
4.7V 1/2W
C43
100uF/16V
C44
R63
100pF
33K
D18
C45
1N4148
100pF
R64
10K
D19
Q9
R55
51
2SA1015
R65
330
R66
10K
Q8
2SA1015
C46
3pF
LT6A04
1N4004
D20
-30V
C47
0.1uF/100V
D26
-60V
CRATE
0.1uF/100V
C36
Title
Size Document Number REV
B AMP_L.SCH A
Date: April 14, 2000 Sheet 15 of 20
PX900DLX L POWER AMP
R957
3.3K
LED921
C20
18pF/100V
R72
130K
R959
56K
-15V
103pF
4
2
3
8
+15V
100pF
C970
IC914A
R27
3.9K
C971
1
2068
C972
R30
100K
D13
1N4148
TR2
2N5401
R28
10K
+15V
103pF
VR1
470
100pF/200V
4.7 1/2W
R36
820
C27
BC560
TR7
C34
R39
0.1uF 50V
R52 2.2K
D15
1N4148
TR5
JE340
470pF/200V
R37
68
LL1_L
LL2_L
C19
10uF/25V NP
R71
5.3K 1%
AMP1
R956
4.7K
R955
10K
R958
C969
330pF
47K
3 4
1 2
CDS901
OPTO CDS
Page 16
LL1_R
LL2_R
LIMIT2
LL1_R
100uF/16V
LL2_R
C31A
R40A
0.1uF/100V
33
D21A
TR11A
R46A
R56A
2SA1015
51
1N4148
R57A
Q7A
L1A 1uH
R59A
10 2W
1K
R58A
R62A
10 2W
R31A
100
R32A
100pF/200V
0.001uF 50V
R35A
820
820
R34A
10uF/25V
C24A
D27A
R24A
PB154M
R74A
1K
-15V
R73A
1K
2
3
+15V
220pF
C22A
100uF/25V
4
MC34081
100uF/25V
7
10
C23A
IC5A
6
C21A
-15V
R25A
10K
R26A
3.9K
R29A
100K
1N4148
TR1A
2N5551
D12A
R33A
JE350
4.7 1/2W
C26A
1K
TR4A
JE802
C30A
C28A
47uF/100V
68
TR10A
RFP50N06
470pF/200V
C32A
TR3A
R38A
D14A
1N4148
TR8A
2SC4793C25A
R41A
2.2K
R42A
C33A
2.2K
R44A
100 1/2W
2SC5200
0.1uF 50V
R43A
TR6A
BC550
2.2K
D16A
1N4004
R45A
ZD7A
20K
6.8V 1/2W
0.1 5W
10K
0.001uF
C48A
C37A
200pF
R60A
R61A
270K
0.068UF/100V
C38A
390pF/200V
D22A
FR107
51
R68A
18K
ZD10A
R69A
30K
7.5V 1/2W
C41A
D23A
1N4148
100uF/16V
15K 1/2W
R67A
D25A
1N4004
D24A
LT6A04
C42A
0.1uF/100V
+60V
+30V
C39A
AMP_R OUT
AMP_R OUT
PGND
R52A
2.2K
C35A
6.8V 1/2W
R47A
20K
D17A
1N4004
R50A
2.2K
2SA1837
R53A
47uF/100V
ZD8A
R48A
2.2K
TR9A
33
C29A
0.1 5W
R51A
100 1/2W
TR12A
2SA1943
TR13A
RFP50N06
15K 1/2W
R49A
FR107
R54A
ZD9A
4.7V 1/2W
C43A
100uF/16V
C44A
R63A
100pF
33K
D18A
C45A
1N4148
R55A
100pF
R64A
10K
C46A
D19A
Q9A
51
2SA1015
R66A
10K
Q8A
2SA1015
3pF
R65A
330
LT6A04
1N4004
D20A
-30V
C47A
0.1uF/100V
D26A
-60V
CRATE
0.1uF/100V
C36A
Title
Size Document Number REV
B AMP_R.SCH A
Date: April 14, 2000 Sheet 16 of 20
PX900DLX R POWER AMP
10uF/25V NP
C19A
R71A
5.3K 1%
C20A
18pF/100V
R72A
130K
R959A
C970A
100pF
VR1A
470
R27A
3.9K
R30A
100K
D13A
1N4148
100pF/200V
4.7 1/2W
C27A
BC560
TR7A
C34A
R39A
0.1uF 50V
56K
TR5A
AMP2
R955A
10K
R956A
4.7K
3 4
1 2
OPTO CDS
CDS902
R958A
C969A
330pF
6
5
47K
IC914B
7
2068
R28A
TR2A
2N5401
10K
+15V
R957A
3.3K
LED922
LL1_R
LL2_R
JE340
R36A
820
D15A
1N4148
470pF/200V
R37A
68
Page 17
AMP_L OUT
AMP_R OUT
AMP_L OUT
AMP_R OUT
JP2A
2
1
HEADER 2
CN2A
HEADER 2
V++
V++
R11
3.9K
PGND
R14
3.9K
R15
3.9K
PGND
CN1
1
2
3
4
HEADER 4
12
R13
6.8K
R12
3.9K
PGND
C12
100uF/16V
R16
6.8K
100uF/16V
PGND
1_SPK
G_AMP1
G_AMP2
2_SPK
TMP1
A90C
KP1
D10
100uF/16V
RELAY DPST
Q11
2SC1815
PGND
C15
OUTPUT PCB
1_SPK
2_SPK
1_SPK
2_SPK
JP1
1
2
3
4
HEADER 4
TO OUTPUT PCB CN1
1_SPK
G_AMP1
G_AMP2
2_SPK
AMP_L OUT
AMP_R OUT
VAC
+15V
+15V
D6
1N4148
2SC1815
D7
1N4148
D8
1N4148
D9
1N4148
C13
D3
1N4004
470pF
C14
R19
220K
Q4
R17
PGND
220K
PGND
2SC1815
R18
220K
PGND
2SA1015
R20
68K
PGND
Q5
PHONEJACK
PHONEJACK
PHONEJACK
PHONEJACK
PHONEJACK
AMP_L OUT
AMP_R OUT
R4
3.9K
R21
10K
Q6
R22
100
Q10
2SC1815 PGND
PGND
JK1
AMP1_A
JK2
AMP1_B
JK3
BRIDGE
JK4
AMP2_A
JK5
AMP2_B
1N4004
ZD4
6.8V
R23
8.2K
SW DPDT
SW1
AMP2
G-BUS
AMP1
G-BUS
HEADER 4
CN2
BRIDGE
1
G-BUS
2
MAIN:MON
3
G-BUS
4
AMP1
5
HEADER 5
CON. MASTER PCB JP803 CON.PWR_AMP PCB JP3
BRIDGE
MAIN:MON
CN3
1
2
3
4
Title
Size Document Number REV
B RLY_OUT.SCH A
Date: April 14, 2000 Sheet 17 of 20
PX900DLX RELAY & OUTPUT
CRATE
Page 18
AC120V
BACK EARTH
AC SOCKET
AC230V
BACK EARTH
WHI
BLK
BRN
RED
ORG
WHI
POWER SW PCB
SW1
P/SW
C1A
0.0047MF/250V
F1
FUSE
10A 250V FOR UL
BLK
BRN
RED
ORG
130 Deg
POWER SW PCB
SW1
P/SW
C1A
0.0047MF/250V
6.3A 250V FOR IEC
F1
FUSE
130 Deg
CN4A
1
2
3
4
5
6
7
8
9
HEADER 9
115
0
115
0
TRANSFORMER
115
0
115
0
TRANSFORMER
BLU
YEL
BLK
YEL
BLU
WHI
BRN
WHI
BLU
YEL
BLK
YEL
BLU
WHI
BRN
WHI
LIMIT_2
LIMIT_1
V+_LED
G_LED
+48V_IN
+15V
G_BUS
G_BUS
-15V
CON. MASTER PCB JP804
D1
PBU805
T
R1
18K 1/2W
CN5A
HEADER 8
BLU
1
YEL
2
BLK
3
YEL
4
BLU
5
WHI
6
BRN
7
WHI
8
T
F2
2A 250V
F3
2A 250V
330uF/100V
D30
1N4004
C16
D28
1N4004
D29
1N4004
PB154M
D4
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
VAC
PBU805
+60V
+60V
4700uF/80V
C1
PGND_L OUT
PGND_R OUT
PGND_M OUT
PGND
4700uF/80V
-60V
C2
-60V
PGND_L
PGND_R
G_MON
DGND
D2A
+30V
Q3
DGND
10uF/50V
10uF/50V
10uF/50V
-30V
C8
C9
C10
+30V
-30V
+48V_IN
R7
3.9
R8
100
CON. DIGITAL PCB JP1002
D+5V
V+_LED
+15V
-15V
+48V_IN
CN1A
1
2
HEADER 2
DGND
+15V
AGND
-15V
D31
1N4004
1000uF/35V
PGND
1000uF/35V
Q2
JE340
100uF/63V
27V 1/2W
VO
VO
VO
C11
C3
3300uF/63V
C4
3300uF/63V
1N4004
ZD3
D5
2SC1815
DGND
D2B
PBU805
C17
330uF/100V
2SK30A
D
G
S
AGND
VAC
R9
10 5W
100UF/63V
V+
C5
C6
AGND
V-
Q1
10 5W
R2
18K 1/2W
T
R3
39K 1/2W
ZD1
51V 1W
R6
330
R5
V++
22V 1/2W
C18
0.1uF/50V
ZD2
IC1
LM7805
VI
G
N
D
DGND
IC2
LM7815
VI
G
N
D
G
N
D
VI
IC3
LM7915
1.5K
R10
C7
DGND
V++
CRATE
Title
Size Document Number REV
B POWER.SCH A
Date: April 14, 2000 Sheet 18 of 20
PX900DLX POWER SUPPLY
Page 19
0.047
R24 5.6K
0.015
LPF1I
LPF1O
LPF202
LPF201
LPF2I1
LPF2I2
C98
C96
C19
0.1
DVCC
AVCC
OP2O
OP2I
AGND
OP1O
OP1I
VREF
OSCI
OSCO
OSCX
LONG
MID
CDI
C38
0.1
0.022uF
C16
47uF/16V
40
39
38
C11 6800P
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
OP1O_A
C24
VREF_A
R14
470
+5V
+5V
R11
1K
U5
7
LM311
C35
47uF/16V
C50
10uF/16V
C9
0.1
0.1
R13
C17
1K
C52
68P
10uF/50V
8456
1
REV1_O
22uF/16V
C13
2
3
R12
27K
C8
47uF/16V
OP1O_A
4700PF
REV2_O
DO_A
DI_A
+5V
C6
22uF/16V
220P
R6
56K
P2_A
P3_A
P4_A
P5_A
P6_A
P7_A
C15
0.1
4.7uF/16V
C7
R25
1K
40
LPF1I
LPF1O
DVCC
39
AVCC
38
37
36
35
34
OP2O
33
OP2I
32
AGND
31
30
29
OP1O
28
OP1I
27
VREF
26
OSCI
25
OSCO
24
OSCX
23
LONG
22
MID
21
CDI
C30 6800P
OP1O_B
+5V
22uF/16V
C36
C51
10uF/16V
C28
0.1
C41
0.1
VREF_B
R23
R22
470
1K
+5V
R20
1K
U9
7
LM311
R21
27K
22uF/16V
C25
220P
C27
47uF/16V
C53 68P
C32
10uF/50V
4.7uF/16V
8456
2
OP1O_B
3
4700PF
1
Title
Size Document Number REV
B REVERB1.SCH A
Date: April 14, 2000 Sheet 19 of 20
PX900DLX DIGITAL EFFECT
C85
22uF/16V
C91
R55
10K
R85
1K
REV4_O
C86
C92
10uF/16V
C78
0.1
0.1
VREF_D
R71
1K
C93
68P
10uF/50V
+5V
R69
1K
8456
U20
7
LM311
1
12
P2_B
13
P3_B
14
P4_B
15
P5_B
16
P6_B
17
18
P7_B
19
20
+5V
10
VREF_C
REV2_O
R76
68K
C71
22uF/16V
OP1O_D
REP3
47uF/16V
C80 6800P
+5V
R56
56K
C64
4.7uF/16V
C65
0.1
REP4
R72
470
R54
2.2K
U21
12
P2_D
P3_D
P4_D
P5_D
P6_D
P7_D
~F0
13
~F1
14
~F2
15
~F3
16
~F4
17
~F5
18
~F6
19
~F7
20
+5V
VCC
10
G
PH4096
U19
14
DO_D
DO
2
DI_D
DI
C79
0.1
VCC8+5V
GND16
PH4094
12
P2_C
13
P3_C
14
P4_C
15
P5_C
16
P6_C
17
18
19
P7_C
20
+5V
10
+5V
5
RESET
9
A0_C
11
A1_C
10
A2_C
15
A3_C
14
A4_C
13
A5_C
2
A6_C
12
A7_C
1
8
RAS_C
4
CAS_C
7
WR_C
3
DO_C
C68
0.047
+5V
6
DI_C
16
17
18
19
20
C62
14
DO_C
2
DI_C
C60
0.1
VCC
GND816
PH4094
10/CLK
19/~OE
C70
10uF/25V
U15
DO
DI
RAS
CAS
A0
A1
A2
A3
A4
A5
A6
A7
A8
WE
U17
~F0
~F1
~F2
~F3
~F4
~F5
~F6
~F7
VCC
G
PH4096
U14
RESET
A0
A1
A2
A3
A4
A5
A6
A7
A8
RAS
CAS
WR
MDI
DO
DGND
CC1
CC2
SHORT
SEL
PH4092
RAS
CAS
11
12
13
14
15
16
17
18
10/CLK
19/~OE
A0
A1
A2
A3
A4
A5
A6
A7
A8
WE
1
TIME_B
11
A2_D
2
RAS_D
3
CAS_D
4
A7_D
5
A6_D
6
A5_D
7
A4_D
8
A3_D
9
TIME_A
5
A0_D
7
A1_D
6
P2_D
12
P3_D
11
P4_D
10
P5_D
13
P6_D
9
P7_D
1
4
RAS_D
15
CAS_D
3
WR_D
1
11
2
11
3
12
4
13
5
14
6
15
7
16
8
17
9
18
C69
0.1
DVCC
AVCC
LPF202
LPF201
LPF2I1
LPF2I2
OP2O
OP2I
AGND
LPF1I
LPF1O
OP1O
OP1I
VREF
OSCI
OSCO
OSCX
LONG
5
A0_C
7
A1_C
6
P2_C
12
P3_C
11
P4_C
10
P5_C
13
P6_C
9
P7_C
1
4
RAS_C
15
CAS_C
3
WR_C
RESET
A0_D
A1_D
A2_D
A3_D
A4_D
A5_D
A6_D
A7_D
RAS_D
CAS_D
C87
0.047
C81
0.047
TIME_B
A2_C
RAS_C
CAS_C
A7_C
A6_C
A5_C
A4_C
A3_C
TIME_A
47uF/16V
40
39
38
37
36
35
34
33
32
31
30
29
OP1O_C
28
27
26
25
24
23
+5V
22
MID
21
CDI
+5V
WR_D
DO_D
DI_D
C66
C61 6800P
C72
R62
470
10uF/25V
5
9
11
10
15
14
13
2
12
1
8
4
7
3
6
16
17
18
19
20
22uF/16V
VREF_C
+5V
LM311
C89
C73
10uF/16V
C59
0.1
0.1
U16
7
U18
RESET
A0
A1
A2
A3
A4
A5
A6
A7
A8
RAS
CAS
WR
MDI
DO
DGND
CC1
CC2
SHORT
SEL
PH4092
REV3_O
R61
R59
1K
C88
0.1
40
DVCC
39
AVCC
38
LPF202
37
LPF201
36
LPF2I1
35
LPF2I2
34
OP2O
33
OP2I
32
AGND
31
LPF1I
30
LPF1O
29
OP1O
28
OP1I
27
VREF
26
OSCI
25
OSCO
24
OSCX
23
LONG
22
MID
21
CDI
R86
1K
R60
C67
27K
C56
220P
C58
47uF/16V
1K
C74
68P
C63
10uF/50V
8456
2
OP1O_C
3
C57
1
4700PF
68K
R70
27K
C77
47uF/16V
C82
2
3
U10
~F0
~F1
~F2
~F3
~F4
~F5
~F6
~F7
VCC
G
PH4096
R73
OP1O_D
4700PF
10/CLK
19/~OE
REV3_O
R10
1N4001
10uF/16V
R66
56K
R64
2.2K
C83
4.7uF/16V
10K
D1
RESET
C94
A0_A
A1_A
A2_A
A3_A
A4_A
A5_A
A6_A
A7_A
RAS_A
CAS_A
WR_A
DO_A
C18
DI_A
0.047
C12
0.047
R65
VREF_D
10K
+5V
C90
22uF/16V
C75
220P
C84
0.1
C76
+5V
RESET
1
TIME_B
11
A2_B
2
RAS_B
11
3
CAS_B
12
4
A7_B
13
5
A6_B
14
6
A5_B
15
7
A4_B
16
8
A3_B
17
9
TIME_A
18
+5V
A0_B
A1_B
A2_B
A3_B
A4_B
A5_B
A6_B
A7_B
RAS_B
CAS_B
WR_B
DO_B
C37
DI_B
0.047
C31
0.047
U8
14
DO_B A0_B
DI_B P2_B
DO
2
DI
C29
0.1
VCC
GND816
PH4094
5
9
11
10
15
14
13
2
12
1
8
4
7
3
6
16
17
18
19
20
10uF/25V
5
9
11
10
15
14
13
2
12
1
8
4
7
3
6
16
17
18
19
20
A0
A1
A2
A3
A4
A5
A6
A7
A8
RAS
CAS
WE
C20
U3
RESET
A0
A1
A2
A3
A4
A5
A6
A7
A8
RAS
CAS
WR
MDI
DO
DGND
CC1
CC2
SHORT
SEL
PH4092
C39
10uF/25V
U7
RESET
A0
A1
A2
A3
A4
A5
A6
A7
A8
RAS
CAS
WR
MDI
DO
DGND
CC1
CC2
SHORT
SEL
PH4092
5
7
6
12
11
10
13
9
1
4
15
3
ECHO_A
A1_B
P3_B
P4_B
P5_B
P6_B
P7_B
RAS_B
CAS_B
WR_B
LPF202
LPF201
LPF2I1
LPF2I2
U4
14
2
C10
0.1
VCC
GND816
PH4094
C42
R4
2.2K
12
13
14
15
16
17
18
19
20
+5V
10
C14
R5
VREF_A
10K
5
A0_A
A0
DO
7
A1_A
A1
6
P2_A
A2
DI
12
P3_A
A3
11
P4_A
A4
10
P5_A
A5
13
P6_A
A6
9
P7_A
A7
1
A8
4
RAS_A
RAS
15
CAS_A
CAS
3
WR_A
WE
R81
150K
REP4
R47
REP3
150K
R48
REP2
150K
U6
~F0
~F1
~F2
~F3
~F4
~F5
~F6
~F7
VCC
G
PH4096
10/CLK
19/~OE
1
TIME_B
11
A2_A
2
RAS_A
11
3
CAS_A
12
4
A7_A
13
5
A6_A
14
6
A5_A
15
7
A4_A
16
8
A3_A
17
9
TIME_A
18
REP2
R84
ECHO_B
C40
R17
56K
R15
2.2K
68K
R83
EFX_IN
68K
C33
C34
0.1
R16
VREF_B
10KC26
CRATE
Page 20
FOOT1
100uF/16V
100uF/16V
FOOT2
+7.5V
-7.5V
C97
10uF/50V
IC1B
74HC14
R34
240K
R1A 1K
R2A
(5KEY 4CON.PUSH SW)
C100 680PF
R50 6.8K
2
3
DGND
REVOUTL
REVOUTR
1K
-15V
4
8
+15V
U13A
4558
VOCAL_SW
LHALL_SW
SHALL_SW
DELAY_SW
ON_SW
2
3
C46
100pF
C44
180PF
R27
1
33K
4
5
D
Q
P
R
CLK
C
6
Q
L
IC2A
74HC74
1
+5V
REMARK
74HC14,74HC14 8pin=DGND
+5V
C45
0.1
DGND
+5V
R26
33K
IC1A
1 2
74HC14
10K
R28
10K
R29
10K
R30
10K
R31
10K
R32
6
5
C43
100PF
1N4001
220uF/10V
DELAY_SW
SHALL_SW
LHALL_SW
VOCAL_SW
ON_SW
4558
14pin=+5v
+5V
D5
C49
U13B
7
FOOT_SW
22uF/16V
R43
68K
C48
R45
22K
EFX
R38
22K
C22
0.01
R44
INIT INIT
10K
Q1
2SC1815
R46
22K
+5v
+15v
-15v
EFX IN
GND
REVOUTL
GND
REVOUTR
FOOT1
FOOT2
JP1002
1
2
HEADER 2
JP1003
1
2
HEADER 2
JP1001
1
2
3
4
5
6
7
HEADER 7
FUNCT_C
DELAY_SW
SHALL_SW
LHALL_SW
VOCAL_SW
ON_SW
FOOT_SW
R8
10K
+5V
R39
R40
100K
100K
C5
0.01
0.01
U2
1
10/CLK
11
19/~OE
2
11
3
12
4
13
5
14
6
15
7
16
8
17
9
18
PH4096
IC1E
74HC14
11 10
R41
100K
C4
C3
0.01
12
~F0
13
~F1
14
~F2
15
~F3
16
~F4
17
~F5
18
~F6
19
~F7
20
VCC
10
G
Title
Size Document Number REV
B REVERB2.SCH A
Date: April 14, 2000 Sheet 20 of 20
D4 1N4148
C21
1uF/50V
R42
100K
DELAY_SW
SHALL_SW
LHALL_SW
VOCAL_SW
ECHO_C
REV1_C
TIME_A
TIME_B
MUTE_C
LED
+5V
C23
0.1
C95
0.1
CRATE
PX900DLX DIGITAL EFFECT
13 12
R3
560K
R49
680 1/4W
IC1F
74HC14
ON_LED
FUNCT_C
LED1
EFX ON
LED
R79
REV2_O
22K
R80
REV3_O
22K
R77
REV4_O
R52
REV1_O
10K
+5V
R37
10K
R36
47K
DGND
ECHO_A
EFX
REV1_A
ECHO_C
MUTE_C
REV1_C
R1 1K
C1
C2
D2
7.5V
D3
7.5V
REV1_A REV1_B
R33
3.3K
C47
0.1
R35
240K
DGND
12
13
2
1
5
3
6
11
10
9
R2
100uF/25V
1K
22K
5 6
9 8
U11
X0
X1
Y0
Y1
Z0
Z1
INH
A
B
C
4053
+15V
C54
100uF/25V
C55
-15V
VDD
VSS
VEE
74HC14
74HC14
R78
12K
IC1C
IC1D
X
Y
Z
14
15
4
16
8
7
3 4
ECHO_B
EFX_O
REV1_B
+7.5V
-7.5V
SW1001A
SW SPDT
SW1001B
SW SPDT
SW1001C
SW SPDT
SW1001D
SW SPDT
SW1001E
SW SPDT
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