ALLEN & HEATH GL4800 Operating and installation instructions

SERVICE INFORMATION
Publication AP6151

2gl4800_ap6151_1.doc
Introduction
This publication provides technical information on servicing the Allen & Heath GL4800.
Included are internal layout drawing, block diagram and circuit schematics with board layouts and
spare parts lists. Whilst we believe this information to be reliable we do not assume responsibility
for inaccuracies. We also reserve the right to make changes in the interest of further product
development.
Additional Resources
Allen & Heath web site www.allen-heath.com Product information
Technical downloads
Distribution contacts
Company contacts
Technical support [email protected] See web for local contact
GL4800 User Guide AP6150 Operating instructions
Performance specification
GL4800 AP6152 Fitting instructions
SYS-LINK Fitting Instructions
GL4800 AP6285 System Description
SYS-LINK Applications Note Cabling Details
GL4800 Service Information
Issue status: gl4800_ap6151_1.doc
Print date: 01 July 2005
Copyright © 2005 Allen & Heath. All rights reserved
Kernick Industrial Estate, Penryn, Cornwall, TR10 9LU, UK
http://www.allen-heath.com

gl4800_ap6151_1.doc 3
Servicing Precautions – General Notes
Service personnel: Service work should be carried out by technically qualified service personnel only.
Mains power is dangerous and can kill. Do not attempt to work on a linear or switched
mode power supply if you are not suitably qualified to do so. Do not attempt to repair
surface mount circuit assemblies unless you are suitably qualified and have the
necessary facilities to do so. Replacement circuit assemblies can be ordered.
Service facilities: Ensure a suitably sized work surface is available. Ensure this is clear of dirt, debris
and obstructions which may damage the equipment surfaces. Ensure adequate
lighting. Use the correct tools for the job and ensure they are in good working order.
Ensure all workshop safety requirements are adhered to.
Service information: Check that you have all the information you need before starting the service job. Refer
to the Allen & Heath web site or contact Allen & Heath technical support for details on
the latest information. Full technical information can be downloaded from the web site
Distributor Zone (password required).
Mains power: Connect the equipment to mains power only of the type described in the user guide
and marked on the rear panel. The power source must provide a good ground
connection. Ensure you always use an isolation transformer when working on any
mains power supply unit.
Mains cord and fuse: Use the correct power cord as supplied with the equipment. Do not remove or tamper
with the ground connection in the power cord. Heed the Important Mains Plug Wiring
Instructions printed in the user guide if it is necessary to rewire the mains cord.
Always replace the equipment mains fuse with the correct type and rating as
described in the user guide and marked on the equipment panel.
Opening the unit: Switch off and remove the mains power cord before opening the equipment. Ensure
all power supply covers and safety shields are in place before applying power with the
unit open for diagnostic fault finding.
Closing the unit: Before finishing, check the quality and accuracy of the service work carried out.
Remove any dirt or debris as this may cause equipment failure in the future. Ensure all
assemblies, harnesses and connectors are correctly aligned and plugged in. Ensure
that jumper settings and control configurations are correctly set according to the
requirements of the customer.
Testing the unit: Before operating the equipment, read and adhere to the Important Safety Instructions
printed in the user guide. Test that the service work has been successfully carried out.
Shipping the unit: Use adequate packing such as the original packaging or purpose designed flight case
if you need to ship the unit. To avoid injury to yourself or damage to the equipment
take care when lifting, moving or carrying the equipment.
Servicing Notes – GL4800
User maintenance: There are several user configurable jumper links inside. These are described in the
user guide together with instructions on how to change the default settings.
Technology: The GL4800 uses conventional thru-hole and SMT (surface mount) PCB
technology. In certain cases it may be better to replace a faulty assembly rather than
try to fix it without the appropriate tools and training. The console uses a rack
mountable external linear power supply (RPS11). Due to the mains voltages present
in the power supply, it should be serviced by suitably qualified personnel only.
Operation: To test the console make sure it is connected as described in the user guide. Check
that the voltage setting on the power supply rear panel is correct for the local mains
supply.
Fault finding: For effective fault diagnosis trace the signal flow through the circuit path. Refer to the
system block diagram. Replacement circuit assemblies are available from Allen &
Heath.

4gl4800_ap6151_1.doc
Contents Log
Internal Layout drawing ............................................................gl4800_layout_1.pdf
Surface and Main Parts ..............................................................gl4800_parts_1.pdf
System Block Diagram ................................................ gl4800_blockdiagram_1.pdf
Master PCB ..............................................................gl4800_002-165_master_2.pdf
Slave PCB ................................................................... gl4800_002-167_slave_1.pdf
MPU PCB ..................................................................... gl4800_002-198_mpu_2.pdf
Mono Input PCB ........................................... gl4800_003-410_mono_input_2.1.pdf
Stereo Input PCB ..........................................gl4800_003-411_stereo_input_3.1.pdf
Group PCB (A,B & C) ............................. gl4800_003-412_413_414_group_3.3.pdf
Mono PCB............................................................... gl4800_003-415_mono_3.2.pdf
8M Connector PCB...............................................gl4800_003-416_8m_conn_2.pdf
4SM Connector PCB ..........................................gl4800_003-417_4sm_conn_2.pdf
4MS Connector PCB ..........................................gl4800_003-418_4ms_conn_2.pdf
8S Connector PCB ................................................gl4800_003-419_8s_conn_2.pdf
Master Connector PCB...................................gl4800_003-420_master_conn_3.pdf
Power Connector PCB ................................... gl4800_003-423_power_conn_b.pdf
Mix Amp Sub PCB ........................................ gl4800_003-452_mix_amp_sub_1.pdf
GL Series Meter PCB............................................................. glseries_meters_3.pdf

Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
[phone]
[phone] 2.1
GL4800 MONO INPUT
AG2621 1 2
PAGE:
TITLE:
DRG No: ISSUE: SHEET: OF
ISSUE BY DATE
FILE: C2621_2.1P1.SCH 09:49:23 16-Jun-2005
ALLEN&HEATH
Tel:
Fax: PRINTED:
ABCDEFGH
a
b
c
d
e
CHK
BY
1
2
3
4
5
6
7
8
9
10
11
12
CONN1
FLEX SKT 12 WAY 90 DEG
DIR_OUT
SEND
DIRECT OUT
INSERT
INSERT RETURN -
+
0V
LINE IN +
-
MIC / LINE IN+
-
SAFE / PR
MUTE_LED
MUTE
MUTE_LED
MUTE
SAFE/PR
TO INPUT-8
CONNECTOR PCB
5
4
6
S15B
2
1
3
S15A
SW2PCOL (SPUN)
PP +48V
R43 22K
R6
6K8 1%
R4
6K8 1%
MLIN+
MLIN-
C14
47/63
C39
47/63
R1
47K
R5
47K
+
-
R3
12K 1%
R2
12K 1%
2
1
3
S1A
SW2PCOL (SPUN)
5
4
6
S1B
2
1
3
S2A
SW2PCOL (SPUN)
5
4
6
S2B
R8
100K
R7
100K
C2 47/25
C3 47/25
MIC/LINE PHASE
C4
330P/DISK
C6
330P/DISK
R9
47K
R10
47K
C5
NF
R11
2K2 1%
D5
1N4002 D6
1N4002
Q1
2SB737
Q4
2SB737
Q2
BC549 Q3
BC549
R15
47R
C37
330/10
1 6
4
RV1A
POT14 10KC X2
R12
4K7 1%
R17
4K7 1%
+VC+VC INPUT PREAMP
R13
820R 1% R18
820R 1%
R14
1K2 1% R16
1K2 1%
-VC-VC
C7
22P/DISK
5
6
7
IC1B
NE5532
R19
2K2 1%
R20
2K2 1%
2 5
3
RV1B
POT14 10KC X2 R21 680R
C8
100/25
R23 2K2 1%R22 2K2 1%
C9
22P/DISK
C10
220N 100V/PE
C11
GAIN
3
2
1
IC1A
NE5532
2 5
3
RV2B
POT14 200KC X2
R24
2K2 1%
16
4
RV2A
POT14 200KC X2
R121 6K8 1%
R25 2K2 1%
LO-CUT FILTER
C12
47/25
R26 22R
R27
100K
SEND
R91
10K 1%
R94
10K 1%
R75
100K
R63
100K
C42
47/25
C41
47/25
3
2
1
IC6A
TL072
C13
22P/DISK
C15
22P/DISK
R112
10K 1%
R118 10K 1% C1
100/25 R119
100K
RETURN-
RETURN+
RETURN-
RETURN+
3
2
1
IC3A
TL072
R45 10K 1%R39 10K 1%
R41
27K
1 3
2
RV3A
POT11 20KB C/D
R40
6K8
R42
3K9
R44
NF RES
C38
2N2/MYL
1
3 2
RV4A
POT11 200KC X2 D/G
R47
22K
R46 10K
13
2
RV5A
POT11 20KB C/D
C16
1N5/MYL
R49
6K8
1
3 2
RV6A
POT11 200KC X2 D/G
C17
1N5/MYL
R52
6K8
5
6
7
IC7B
TL072
R123 6K8
R122
6K8 R124 12K
5
6
7
IC3B
TL072
R50 10K 1%
R126
5K6
R125
6K8
2
1
3
S16A
SW2PCOL (SPUN)
5
4
6
S16B
SW2PCOL (SPUN)
R48
10K
R51 10K
13
2
RV7A
POT11 20KB C/D
R54
6K8
1
3 2
RV8A
POT11 200KC X2 D/G
R57
6K8
3
2
1
IC7A
TL072
R128 6K8
R127
6K8 R129 12K
3
2
1
IC4A
TL072
R55 10K 1%
R131
5K6
R130
6K8
2
1
3
S17A
SW2PCOL (SPUN)
5
4
6
S17B
SW2PCOL (SPUN)
R53
10K
C18
22N/MYL
C19
22N/MYL
R56 10K 1%
R58 30K 2%
1 3
2
RV9A
POT11 20KB C/D
R59
15K
R60
8K2
R61
22K
5
6
7
IC4B
TL072
R62 10K 1%
1
3 2
RV10A
POT11 200KC X2 D/G
C20
6N8/MYL
R65
100K
C21
100/25
HF MF1 MF2
FREQ
FREQ
LF
FREQ
FREQ
EQUALISER
R120
22K 1%
FREQ
QQ
2
1
3
S3A
SW2PCOL (SPUN)
5
4
6
S3B
SW2PCOL (SPUN)
LD4
LED T1 3MM GREEN
R64
15K
-VC
+VC
EQ IN
POST-EQ
PRE-EQ
PRE-EQ
1
122
3
344
5
566
7
788
9
910 10
11
11 12 12
13
13 14 14
15
15 16 16
17
17 18 18
19
19 20 20
21
21 22 22
23
23 24 24
25
25 26 26
27
27 28 28
29
29 30 30
31
31 32 32
33
33 34 34
35
35 36 36
37
37 38 38
39
39 40 40
CONN2
BOX 20X2 M 90 DEG
PP +48V
A1_MIX
A3_MIX
A5_MIX
A7_MIX
A9_MIX
MTXA
MTXC
-V
+V
PFL_DC
PFLL_MIX
L_MIX
M_MIX
G8_MIX
G6_MIX
G4_MIX
G2_MIX
A2_MIX
A4_MIX
A6_MIX
A8_MIX
A10_MIX
MTXB
MTXD
-V
+V
AFL_DC
PFLR_MIX
AFL_MIX
R_MIX
G7_MIX
G5_MIX
G3_MIX
G1_MIX
J40
10K 1%
J39
0R0
R109
1R0 PF
R115 1R0 PF
R108
1R0 PF
R110
1R0 PF
R114 1R0 PF
R111
1R0 PF
C22
47/25
C23
47/25
C35
47/25
C40
47/25
C24
47N/MYL
V-
4V+ 8
IC1C
NE5532
V-
4V+ 8
IC3C
TL072
V-
4V+ 8
IC4C
TL072
V-
4V+ 8
IC6C
TL072
V-
4V+ 8
IC7C
TL072
V-
4V+ 8
IC5C
NE5532
V-
12 V+ 3
IC2E
LM339
C34
47N/MYL
+VA
+VB
+VC
-VA
-VB
-VC
AUDIO EARTH
E1
PIN-SOLDER 1.2MM
E2
SGND
+VA
+VB
+VC
-VC
-VB
-VA
40 WAY RIBBON
J1
LINK OPT
-VC
AI1 AI2
HOLE-AI
AI3
ATE1
HOLE-ATE
ATE2
AI & ATE HOLES
AI4
2.1 AAT 22-03-05 XXX
003-410 iss.2.1

Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
[phone]
[phone] 2.1
GL4800 MONO INPUT
AG2621 2 2
PAGE:
TITLE:
DRG No: ISSUE: SHEET: OF
ISSUE BY DATE
FILE: C2621_2.1P2.SCH 09:49:24 16-Jun-2005
ALLEN&HEATH
Tel:
Fax: PRINTED:
ABCDEFGH
a
b
c
d
e
CHK
BY
J30
NF LINK
J32
NF LINK
J31
LINK
13
2
RV20A
POT11 20KK
J27
NF LINK
J29
NF LINK
J28
LINK
13
2
RV19A
POT11 20KK
R85
10K 1%
J24
NF LINK
J26
NF LINK
J25
LINK
13
2
RV18A
POT11 20KK
R84
10K 1%
J21
NF LINK
J23
NF LINK
J22
LINK
13
2
RV17A
POT11 20KK
R83
10K 1%
J18
NF LINK
J20
NF LINK
J19
LINK
13
2
RV16A
POT11 20KK
R82
10K 1%
J15
NF LINK
J17
NF LINK
J16
LINK
13
2
RV15A
POT11 20KK
R81
10K 1%
J12
NF LINK
J14
NF LINK
J13
LINK
13
2
RV14A
POT11 20KK
R80
10K 1%
J9
NF LINK
J11
NF LINK
J10
LINK
13
2
RV13A
POT11 20KK
R79
10K 1%
J6
NF LINK
J8
NF LINK
J7
LINK
13
2
RV12A
POT11 20KK
R78
10K 1%
J3
NF LINK
J5
NF LINK
J4
LINK
13
2
RV11A
POT11 20KK
R77
10K 1%
P S APS AP S AP S APS AP S AP S APS AP S APS A
R117
100K P = PRE-FADE
S = SWITCHED
A = POST-FADE
2
1
3
S6A
SW2PCOL (SPUN)
5
4
6
S6B
POST / PRE 1-4
2
1
3
S7A
SW2PCOL (SPUN)
5
4
6
S7B
POST / PRE 5-8
2
1
3
S8A
SW2PCOL (SPUN)
5
4
6
S8B
POST / PRE 9-10
A1_MIX A2_MIX A3_MIX A4_MIX A5_MIX A6_MIX A7_MIX A8_MIX A9_MIX
AUX1 AUX2 AUX3 AUX4 AUX5 AUX6 AUX7 AUX8 AUX9
AUX10
/ DIR OUT
R132
6K8 1%
R86
4K7 1%
A10_MIX
2
1
3S18A
SW2PCOL (SPUN)
5
4
6S18B
LD5
LED T1 3MM GREEN
R134
8K2
+VB
R133
10K 1%
R135
22K 1%
R136
100K
R137
22R
C36
22P/DISK
C45
47/25
5
6
7
IC6B
TL072
DIR_OUT
J38 NF LINK OPT
J37 12K 1%
DIR OUT OPTIONS
R87
10K
R88
8K2
Q7 J111N
R92
47K
C28
100/25 5
6
7
IC5B
NE5532
C30
22P/DISK
R95 10K
C32
100/25
Q8 J111N
R93
47K
C29
100/25 3
2
1
IC5A
NE5532
C31
22P/DISK
C33
100/25
R96 22K 1%
R90
6K8 1%
R74
6K8 1%
J36
NF LINK OPT
J35
LINK OPT
PRE-FADE
POST-MUTE
PRE-MUTE
R89
100K
16
4
RV22A
POT14 10KAC C/D
25
3
RV22B
POT14 10KAC C/D
R106
10K 1%
R105
22K 1%
R104
22K 1%
R103
22K 1%
R102
22K 1%
5
4
6
S9B
5
4
6
S10B
5
4
6
S11B
5
4
6
S12B
5
4
6
S13B
G8_MIX
G6_MIX
G4_MIX
R_MIX
G2_MIX
R101
10K 1%
R100
22K 1%
R99
22K 1%
R98
22K 1%
R97
22K 1%
2
1
3
S9A
2
1
3
S10A
2
1
3
S11A
2
1
3
S12A
2
1
3
S13A
G7_MIX
G5_MIX
G3_MIX
L_MIX
G1_MIX
PRE FADE
POST FADE
R107
10K 1%
2
1
3
S14A
5
4
6
S14B
M_MIX
J34 LINK OPT
J33 NF LINK OPT
POST EQ
PRE EQ
2
1
3
S4A
5
4
6
S4B
R139
22K 1%
R66
22K 1%
LD3
LED T1 3MM YELLOW
R71
8K2
+VB
PFLR_MIX
PFLL_MIX
PFL
PFL_DC
R67 15K
R76
1M0
Q6
2N4403
D4 1N4148
LD1
LED T1 3MM RED
LD2
R73
4K7
R72
100K
C46
47N/MYL
C26
47N/MYL
R70
47K
-VB
MUTE_LED
5
4
6
S5B
2
1
3
S5A
R116
820R 1%
MUTE
MUTE
FADER
ROUTING
PAN
Q5
2N4403
C25
47N/MYL
-VB
SAFE/PR
LD8
LED T1 3MM GREEN
R69
8K2
R68
47K
5
4
2
IC2A
LM339
7
6
1
IC2B
LM339
9
8
14
IC2C
LM339
11
10
13
IC2D
LM339
R30
6K8
+VB
-VB
R32
120R
R33
180R
R34
220R
R35
1K5
R36
3K3
R38
10M
R37
680K
R28 4K7
R29
39K
R113
33K
R31
15K
C27
150N 63V/PE
C44
2N7/MYL
+VB
D1 1N4148
-VB
D3
1N4148
D2
1N4148
C43
1/63
POST-EQ
SIGNAL METER
-VB
-VB
PRE-EQ
POST-EQ
LD6
LED BAR MB4 SQ_1
J2 NF LINK OPT
P2
PIN-SOLDER 1.2MM
P1
P3
RED
BLUE
GREEN
AUX OPTION
2.1 AAT 22-03-05 XXX
003-410 iss.2.1

003-410 iss.2.1

003-411 iss.3.1
GL4800

003-411 iss.3.1

Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
[phone]
[phone]
GL4800 IN8M CONN PCB
C6075 1 2
PAGE:
TITLE:
DRG No: ISSUE: SHEET: OF
FILE: C6075_2P1.Sch 12:03:02 10-May-2005
ALLEN&HEATH
Tel:
Fax: PRINTED:
ABCDEF GH
a
b
c
d
e
IJK
ISSUE BY DATE CHK
BY
1
2
3
4
5
6
7
8
9
10
11
12
CN105
FLEX SKT 12 WAY VERT
MUTE1
SAFE1
MLED1
3
1 2
0
CN104
XLR NC3FAV20
T
R
CN100
JACK V5M
T
R
CN101
JACK V5M
T
R
CN102
JACK V3M
T
R
CN103
JACK V3M R103
33R
R102
33R
L104
FB-TH
C100
47/63
C101
47/63
R100
47K
R101
47K
L100
FB-TH
L101
FB-TH
L102
FB-TH
L103
FB-TH
C102
1N/MYL
JP100
LINK OPT
P100
PIN-SOLDER 1.5MM
0VA1
0VA2
AI1
HOLE-AI
1
2
3
4
5
6
7
8
9
10
11
12
CN105_1
FLEX SKT 12 WAY VERT
MUTE2
SAFE2
MLED2
3
1 2
0
CN104_1
XLR NC3FAV20
T
R
CN100_1
JACK V5M
T
R
CN101_1
JACK V5M
T
R
CN102_1
JACK V3M
T
R
CN103_1
JACK V3M R103_1
33R
R102_1
33R
L104_1
FB-TH
C100_1
47/63
C101_1
47/63
R100_1
47K
R101_1
47K
L100_1
FB-TH
L101_1
FB-TH
L102_1
FB-TH
L103_1
FB-TH
C102_1
1N/MYL
JP100_1
LINK OPT
P100_1
PIN-SOLDER 1.5MM
0VA2
0VA3
SL1
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_2
FLEX SKT 12 WAY VERT
MUTE3
SAFE3
MLED3
3
1 2
0
CN104_2
XLR NC3FAV20
T
R
CN100_2
JACK V5M
T
R
CN101_2
JACK V5M
T
R
CN102_2
JACK V3M
T
R
CN103_2
JACK V3M R103_2
33R
R102_2
33R
L104_2
FB-TH
C100_2
47/63
C101_2
47/63
R100_2
47K
R101_2
47K
L100_2
FB-TH
L101_2
FB-TH
L102_2
FB-TH
L103_2
FB-TH
C102_2
1N/MYL
JP100_2
LINK OPT
P100_2
PIN-SOLDER 1.5MM
0VA3
0VA4
SL2
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_3
FLEX SKT 12 WAY VERT
MUTE4
SAFE4
MLED4
3
1 2
0
CN104_3
XLR NC3FAV20
T
R
CN100_3
JACK V5M
T
R
CN101_3
JACK V5M
T
R
CN102_3
JACK V3M
T
R
CN103_3
JACK V3M R103_3
33R
R102_3
33R
L104_3
FB-TH
C100_3
47/63
C101_3
47/63
R100_3
47K
R101_3
47K
L100_3
FB-TH
L101_3
FB-TH
L102_3
FB-TH
L103_3
FB-TH
C102_3
1N/MYL
JP100_3
LINK OPT
P100_3
PIN-SOLDER 1.5MM
0VA4
0VA5
SL3
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_4
FLEX SKT 12 WAY VERT
MUTE5
SAFE5
MLED5
3
1 2
0
CN104_4
XLR NC3FAV20
T
R
CN100_4
JACK V5M
T
R
CN101_4
JACK V5M
T
R
CN102_4
JACK V3M
T
R
CN103_4
JACK V3M R103_4
33R
R102_4
33R
L104_4
FB-TH
C100_4
47/63
C101_4
47/63
R100_4
47K
R101_4
47K
L100_4
FB-TH
L101_4
FB-TH
L102_4
FB-TH
L103_4
FB-TH
C102_4
1N/MYL
JP100_4
LINK OPT
P100_4
PIN-SOLDER 1.5MM
0VA5
0VA6
SL4
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_5
FLEX SKT 12 WAY VERT
MUTE6
SAFE6
MLED6
3
1 2
0
CN104_5
XLR NC3FAV20
T
R
CN100_5
JACK V5M
T
R
CN101_5
JACK V5M
T
R
CN102_5
JACK V3M
T
R
CN103_5
JACK V3M R103_5
33R
R102_5
33R
L104_5
FB-TH
C100_5
47/63
C101_5
47/63
R100_5
47K
R101_5
47K
L100_5
FB-TH
L101_5
FB-TH
L102_5
FB-TH
L103_5
FB-TH
C102_5
1N/MYL
JP100_5
LINK OPT
P100_5
PIN-SOLDER 1.5MM
0VA6
0VA7
SL5
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_6
FLEX SKT 12 WAY VERT
MUTE7
SAFE7
MLED7
3
1 2
0
CN104_6
XLR NC3FAV20
T
R
CN100_6
JACK V5M
T
R
CN101_6
JACK V5M
T
R
CN102_6
JACK V3M
T
R
CN103_6
JACK V3M R103_6
33R
R102_6
33R
L104_6
FB-TH
C100_6
47/63
C101_6
47/63
R100_6
47K
R101_6
47K
L100_6
FB-TH
L101_6
FB-TH
L102_6
FB-TH
L103_6
FB-TH
C102_6
1N/MYL
JP100_6
LINK OPT
P100_6
PIN-SOLDER 1.5MM
0VA7
0VA8
SL6
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_7
FLEX SKT 12 WAY VERT
MUTE8
SAFE8
MLED8
3
1 2
0
CN104_7
XLR NC3FAV20
T
R
CN100_7
JACK V5M
T
R
CN101_7
JACK V5M
T
R
CN102_7
JACK V3M
T
R
CN103_7
JACK V3M R103_7
33R
R102_7
33R
L104_7
FB-TH
C100_7
47/63
C101_7
47/63
R100_7
47K
R101_7
47K
L100_7
FB-TH
L101_7
FB-TH
L102_7
FB-TH
L103_7
FB-TH
C102_7
1N/MYL
P100_7
PIN-SOLDER 1.5MM
0VA8
AI2
HOLE-AI
SL7
SLOT 18.0MM
1 AAT 05-01-05 XXX
CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4
CHANNEL 5 CHANNEL 6 CHANNEL 7 CHANNEL 8
2 AAT 23-03-05 XXX
003-416 iss.2

Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
[phone]
[phone]
GL4800 IN8M CONN PCB
C6075 2 2
PAGE:
TITLE:
DRG No: ISSUE: SHEET: OF
ISSUE BY DATE
FILE: C6075_2P2.Sch 12:03:03 10-May-2005
ALLEN&HEATH
Tel:
Fax: PRINTED:
ABCDEFGH
a
b
c
d
e
CHK
BY
215
312
41
55
62
74
A
11
B
10
C
9
INH
6
VDD
16
VEE
7
VSS
8
114
013
COM
3
U1
4051BC
MUTE1
MUTE2
MUTE3
MUTE4
MUTE5
MUTE6
MUTE7
MUTE8
MLED1
MLED2
MLED3
MLED4
MLED5
MLED6
MLED7
MLED8
SAFE1
SAFE2
SAFE3
SAFE4
SAFE5
SAFE6
SAFE7
SAFE8
R2
15K
R3
15K
R4
15K
R5
15K
R6
15K
R7
15K
R8
15K
R9
15K
R10
15K
R11
15K
R12
15K
R13
15K
R14
15K
R15
15K
R16
15K
R17
15K
D
3
A0
5A1
6A2
7
WD
4RST
2
Q0 9
Q1 10
Q2 11
Q3 12
Q4 13
Q5 14
Q6 15
Q7 1
VCC
16 GND 8
U2
4099B
D
3
A0
5A1
6A2
7
WD
4RST
2
Q0 9
Q1 10
Q2 11
Q3 12
Q4 13
Q5 14
Q6 15
Q7 1
VCC
16 GND 8
U3
4099B
0VD
JP1
LINK OPT
JP2
LINK OPT
JP3
LINK OPT
JP4
LINK OPT
BANK ASSIGN
1 OR 3
2 OR 4
3 OR 5
6
0VD
0VD
SW_IN
BANK9/11
BANK8/10
BANK7/9
BANK12
ML_OUT
SP_OUT
CA0
CA1
CA2
+5V
+5VIN
R1
10R PF AX
C2
47/25
C1
100N 100V/MLC
C3
47N/MYL
+5V
0VD
1
122
3
344
16 16
5
5
15
15
66
14 14
7
7
13
13
88
12 12
9
9
11
11 10 10
CN1
IDC 8X2 M 90 DEG
R18 470K
R19 470K
R20 470K
R21 470K
R22 470K
R23 470K
R24 470K
R25 470K
+5V
LK1
TC LINK
LK7
TC LINK
LK13
TC LINK
LK19
TC LINK
LK25
TC LINK
LK2
TC LINK
LK8
TC LINK
LK14
TC LINK
LK20
TC LINK
LK26
TC LINK
LK3
TC LINK
LK9
TC LINK
LK15
TC LINK
LK21
TC LINK
LK27
TC LINK
LK4
TC LINK
LK10
TC LINK
LK16
TC LINK
LK22
TC LINK
LK28
TC LINK
LK5
TC LINK
LK11
TC LINK
LK17
TC LINK
LK23
TC LINK
LK29
TC LINK
LK6
TC LINK
LK12
TC LINK
LK18
TC LINK
LK24
TC LINK
LK30
TC LINK
LK31
TC LINK
LK34
TC LINK
LK32
TC LINK
1 AAT 05-01-05 XXX
CONN REVERSED FITMENT COMP SIDE
2 AAT 23-03-05 XXX
003-416 iss.2

003-416 iss.2

Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
[phone]
[phone]
L4D 8S CONN PCB
C6076 1 2
PAGE:
TITLE:
DRG No: ISSUE: SHEET: OF
FILE: C6076_2P1.Sch 11:58:39 10-May-2005
ALLEN&HEATH
Tel:
Fax: PRINTED:
ABCDEF GH
a
b
c
d
e
IJK
ISSUE BY DATE CHK
BY
1
2
3
4
5
6
7
8
9
10
11
12
CN105
FLEX SKT 12 WAY VERT
MUTE1
SAFE1
MLED1
3
1 2
0
CN104
XLR NC3FAV20
T
R
CN100
JACK V5M
T
R
CN101
JACK V3M
T
R
CN102
JACK V5M
T
R
CN103
JACK V5M
R100
33R
L100
0R0
L101
0R0
C102
1N/MYL
JP100
LINK OPT
P100
PIN-SOLDER 1.5MM
0VA1
0VA2
AI1
HOLE-AI
1
2
3
4
5
6
7
8
9
10
11
12
CN105_1
FLEX SKT 12 WAY VERT
MUTE2
SAFE2
MLED2
3
1 2
0
CN104_1
XLR NC3FAV20
T
R
CN100_1
JACK V5M
T
R
CN101_1
JACK V3M
T
R
CN102_1
JACK V5M
T
R
CN103_1
JACK V5M
R100_1
33R
L100_1
0R0
L101_1
0R0
C102_1
1N/MYL
JP100_1
LINK OPT
P100_1
PIN-SOLDER 1.5MM
0VA2
0VA3
SL1
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_2
FLEX SKT 12 WAY VERT
MUTE3
SAFE3
MLED3
3
1 2
0
CN104_2
XLR NC3FAV20
T
R
CN100_2
JACK V5M
T
R
CN101_2
JACK V3M
T
R
CN102_2
JACK V5M
T
R
CN103_2
JACK V5M
R100_2
33R
L100_2
0R0
L101_2
0R0
C102_2
1N/MYL
JP100_2
LINK OPT
P100_2
PIN-SOLDER 1.5MM
0VA3
0VA4
SL2
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_3
FLEX SKT 12 WAY VERT
MUTE4
SAFE4
MLED4
3
1 2
0
CN104_3
XLR NC3FAV20
T
R
CN100_3
JACK V5M
T
R
CN101_3
JACK V3M
T
R
CN102_3
JACK V5M
T
R
CN103_3
JACK V5M
R100_3
33R
L100_3
0R0
L101_3
0R0
C102_3
1N/MYL
JP100_3
LINK OPT
P100_3
PIN-SOLDER 1.5MM
0VA4
0VA5
SL3
SLOT 18.0MM
SL4
SLOT 18.0MM
SL5
SLOT 18.0MM
SL6
SLOT 18.0MM
SL7
SLOT 18.0MM
1 AAT 05-01-05 XXX
STEREO CHANNEL 1 STEREO CHANNEL 2 STEREO CHANNEL 3 STEREO CHANNEL 4
STEREO CHANNEL 5 STEREO CHANNEL 6 STEREO CHANNEL 7 STEREO CHANNEL 8
P1
PIN-SOLDER 1.5MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_4
FLEX SKT 12 WAY VERT
MUTE5
SAFE5
MLED5
3
1 2
0
CN104_4
XLR NC3FAV20
T
R
CN100_4
JACK V5M
T
R
CN101_4
JACK V3M
T
R
CN102_4
JACK V5M
T
R
CN103_4
JACK V5M
R100_4
33R
L100_4
0R0
L101_4
0R0
C102_4
1N/MYL
JP100_4
LINK OPT
P100_4
PIN-SOLDER 1.5MM
0VA5
0VA6
1
2
3
4
5
6
7
8
9
10
11
12
CN105_5
FLEX SKT 12 WAY VERT
MUTE6
SAFE6
MLED6
3
1 2
0
CN104_5
XLR NC3FAV20
T
R
CN100_5
JACK V5M
T
R
CN101_5
JACK V3M
T
R
CN102_5
JACK V5M
T
R
CN103_5
JACK V5M
R100_5
33R
L100_5
0R0
L101_5
0R0
C102_5
1N/MYL
JP100_5
LINK OPT
P100_5
PIN-SOLDER 1.5MM
0VA6
0VA7
1
2
3
4
5
6
7
8
9
10
11
12
CN105_6
FLEX SKT 12 WAY VERT
MUTE7
SAFE7
MLED7
3
1 2
0
CN104_6
XLR NC3FAV20
T
R
CN100_6
JACK V5M
T
R
CN101_6
JACK V3M
T
R
CN102_6
JACK V5M
T
R
CN103_6
JACK V5M
R100_6
33R
L100_6
0R0
L101_6
0R0
C102_6
1N/MYL
JP100_6
LINK OPT
P100_6
PIN-SOLDER 1.5MM
0VA7
0VA8
1
2
3
4
5
6
7
8
9
10
11
12
CN105_7
FLEX SKT 12 WAY VERT
MUTE8
SAFE8
MLED8
3
1 2
0
CN104_7
XLR NC3FAV20
T
R
CN100_7
JACK V5M
T
R
CN101_7
JACK V3M
T
R
CN102_7
JACK V5M
T
R
CN103_7
JACK V5M
R100_7
33R
L100_7
0R0
L101_7
0R0
C102_7
1N/MYL
P100_7
PIN-SOLDER 1.5MM
0VA8
2 AAT 24-03-05 XXX
AI2
SLOT-AI
003-419 iss.2

Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
[phone]
[phone]
L4D 8S CONN PCB
C6076 2 2
PAGE:
TITLE:
DRG No: ISSUE: SHEET: OF
ISSUE BY DATE
FILE: C6076_2P2.Sch 11:58:40 10-May-2005
ALLEN&HEATH
Tel:
Fax: PRINTED:
ABCDEFGH
a
b
c
d
e
CHK
BY
215
312
41
55
62
74
A
11
B
10
C
9
INH
6
VDD
16
VEE
7
VSS
8
114
013
COM
3
U1
4051BC
MLED1
MLED2
MLED3
MLED4
MLED5
MLED6
MLED7
MLED8
SAFE1
SAFE2
SAFE3
SAFE4
SAFE5
SAFE6
SAFE7
SAFE8
R2
15K
R3
15K
R4
15K
R5
15K
R6
15K
R7
15K
R8
15K
R9
15K
R10
15K
R11
15K
R12
15K
R13
15K
R14
15K
R15
15K
R16
15K
R17
15K
D
3
A0
5A1
6A2
7
WD
4RST
2
Q0 9
Q1 10
Q2 11
Q3 12
Q4 13
Q5 14
Q6 15
Q7 1
VCC
16 GND 8
U2
4099B
D
3
A0
5A1
6A2
7
WD
4RST
2
Q0 9
Q1 10
Q2 11
Q3 12
Q4 13
Q5 14
Q6 15
Q7 1
VCC
16 GND 8
U3
4099B
0VD
JP1
LINK OPT
JP2
LINK OPT
JP3
LINK OPT
JP4
LINK OPT
BANK ASSIGN
1 OR 3
2 OR 4
3 OR 5
6
0VD
0VD
SW_IN
BANK9/11
BANK8/10
BANK7/9
BANK12
ML_OUT
SP_OUT
CA0
CA1
CA2
+5V
+5VIN
R1
10R PF AX
C2
47/25
C1
100N 100V/MLC
C3
47N/MYL
+5V
0VD
1
122
3
344
16 16
5
5
15
15
66
14 14
7
7
13
13
88
12 12
9
9
11
11 10 10
CN1
IDC 8X2 M 90 DEG
LK1
TC LINK
LK7
TC LINK
LK13
TC LINK
LK19
TC LINK
LK25
TC LINK
LK2
TC LINK
LK8
TC LINK
LK14
TC LINK
LK20
TC LINK
LK26
TC LINK
LK3
TC LINK
LK9
TC LINK
LK15
TC LINK
LK21
TC LINK
LK27
TC LINK
LK4
TC LINK
LK10
TC LINK
LK16
TC LINK
LK22
TC LINK
LK28
TC LINK
LK5
TC LINK
LK11
TC LINK
LK17
TC LINK
LK23
TC LINK
LK29
TC LINK
LK6
TC LINK
LK12
TC LINK
LK18
TC LINK
LK24
TC LINK
LK30
TC LINK
LK31
TC LINK
LK34
TC LINK
LK32
TC LINK
LK33
TC LINK
1 AAT 05-01-05 XXX
CONN REVERSED FITMENT COMP SIDE
LK35
LINK TCW
LK36
LINK TCW
LK37
LINK TCW
LK38
LINK TCW
LK39
LINK TCW
MUTE1
MUTE2
MUTE3
MUTE4
MUTE5
MUTE6
MUTE7
MUTE8
R18 470K
R19 470K
R20 470K
R21 470K
R22 470K
R23 470K
R24 470K
R25 470K
+5V
2 AAT 24-03-05 XXX
003-419 iss.2

003-419 iss.2

Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
[phone]
[phone]
GL4800 SM CONN PCB
C6077 1 2
PAGE:
TITLE:
DRG No: ISSUE: SHEET: OF
FILE: C6077_2P1.Sch 11:29:52 10-May-2005
ALLEN&HEATH
Tel:
Fax: PRINTED:
ABCDEF GH
a
b
c
d
e
IJK
ISSUE BY DATE CHK
BY
1
2
3
4
5
6
7
8
9
10
11
12
CN105
FLEX SKT 12 WAY VERT
MUTE1
SAFE1
MLED1
3
1 2
0
CN104
XLR NC3FAV20
T
R
CN100
JACK V5M
T
R
CN101
JACK V3M
T
R
CN102
JACK V5M
T
R
CN103
JACK V5M
R100
33R
L100
0R0
L101
0R0
C102
1N5/MYL
JP100
LINK OPT
P100
PIN-SOLDER 1.5MM
0VA1
0VA2
AI1
HOLE-AI
1
2
3
4
5
6
7
8
9
10
11
12
CN105_1
FLEX SKT 12 WAY VERT
MUTE2
SAFE2
MLED2
3
1 2
0
CN104_1
XLR NC3FAV20
T
R
CN100_1
JACK V5M
T
R
CN101_1
JACK V3M
T
R
CN102_1
JACK V5M
T
R
CN103_1
JACK V5M
R100_1
33R
L100_1
0R0
L101_1
0R0
C102_1
1N5/MYL
JP100_1
LINK OPT
P100_1
PIN-SOLDER 1.5MM
0VA2
0VA3
SL1
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_2
FLEX SKT 12 WAY VERT
MUTE3
SAFE3
MLED3
3
1 2
0
CN104_2
XLR NC3FAV20
T
R
CN100_2
JACK V5M
T
R
CN101_2
JACK V3M
T
R
CN102_2
JACK V5M
T
R
CN103_2
JACK V5M
R100_2
33R
L100_2
0R0
L101_2
0R0
C102_2
1N5/MYL
JP100_2
LINK OPT
P100_2
PIN-SOLDER 1.5MM
0VA3
0VA4
SL2
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_3
FLEX SKT 12 WAY VERT
MUTE4
SAFE4
MLED4
3
1 2
0
CN104_3
XLR NC3FAV20
T
R
CN100_3
JACK V5M
T
R
CN101_3
JACK V3M
T
R
CN102_3
JACK V5M
T
R
CN103_3
JACK V5M
R100_3
33R
L100_3
0R0
L101_3
0R0
C102_3
1N5/MYL
JP100_3
LINK OPT
P100_3
PIN-SOLDER 1.5MM
0VA4
0VA5
SL3
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_4
FLEX SKT 12 WAY VERT
MUTE5
SAFE5
MLED5
3
1 2
0
CN104_4
XLR NC3FAV20
T
R
CN100_4
JACK V5M
T
R
CN101_4
JACK V5M
T
R
CN102_4
JACK V3M
T
R
CN103_4
JACK V3M
R103_4
33R
R102_4
33R
L104_4
FB-TH
C100_4
47/63
C101_4
47/63
R100_4
47K
R101_4
47K
L100_4
FB-TH
L101_4
FB-TH
L102_4
FB-TH
L103_4
FB-TH
C102_4
1N5/MYL
JP100_4
LINK OPT
P100_4
PIN-SOLDER 1.5MM
0VA5
0VA6
SL4
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_5
FLEX SKT 12 WAY VERT
MUTE6
SAFE6
MLED6
3
1 2
0
CN104_5
XLR NC3FAV20
T
R
CN100_5
JACK V5M
T
R
CN101_5
JACK V5M
T
R
CN102_5
JACK V3M
T
R
CN103_5
JACK V3M
R103_5
33R
R102_5
33R
L104_5
FB-TH
C100_5
47/63
C101_5
47/63
R100_5
47K
R101_5
47K
L100_5
FB-TH
L101_5
FB-TH
L102_5
FB-TH
L103_5
FB-TH
C102_5
1N5/MYL
JP100_5
LINK OPT
P100_5
PIN-SOLDER 1.5MM
0VA6
0VA7
SL5
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_6
FLEX SKT 12 WAY VERT
MUTE7
SAFE7
MLED7
3
1 2
0
CN104_6
XLR NC3FAV20
T
R
CN100_6
JACK V5M
T
R
CN101_6
JACK V5M
T
R
CN102_6
JACK V3M
T
R
CN103_6
JACK V3M
R103_6
33R
R102_6
33R
L104_6
FB-TH
C100_6
47/63
C101_6
47/63
R100_6
47K
R101_6
47K
L100_6
FB-TH
L101_6
FB-TH
L102_6
FB-TH
L103_6
FB-TH
C102_6
1N5/MYL
JP100_6
LINK OPT
P100_6
PIN-SOLDER 1.5MM
0VA7
0VA8
SL6
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_7
FLEX SKT 12 WAY VERT
MUTE8
SAFE8
MLED8
3
1 2
0
CN104_7
XLR NC3FAV20
T
R
CN100_7
JACK V5M
T
R
CN101_7
JACK V5M
T
R
CN102_7
JACK V3M
T
R
CN103_7
JACK V3M
R103_7
33R
R102_7
33R
L104_7
FB-TH
C100_7
47/63
C101_7
47/63
R100_7
47K
R101_7
47K
L100_7
FB-TH
L101_7
FB-TH
L102_7
FB-TH
L103_7
FB-TH
C102_7
1N5/MYL
P100_7
PIN-SOLDER 1.5MM
0VA8
AI2
HOLE-AI
SL7
SLOT 18.0MM
1 AAT 05-01-05 XXX
STEREO CHANNEL 1 STEREO CHANNEL 2 STEREO CHANNEL 3 STEREO CHANNEL 4
CHANNEL 5 CHANNEL 6 CHANNEL 7 CHANNEL 8
P1
PIN-SOLDER 1.5MM
2 AAT 29-03-05 XXX
003-417 iss.2

Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
[phone]
[phone]
GL4800 SM CONN PCB
C6077 2 2
PAGE:
TITLE:
DRG No: ISSUE: SHEET: OF
ISSUE BY DATE
FILE: C6077_2P2.Sch 11:29:52 10-May-2005
ALLEN&HEATH
Tel:
Fax: PRINTED:
ABCDEFGH
a
b
c
d
e
CHK
BY
215
312
41
55
62
74
A
11
B
10
C
9
INH
6
VDD
16
VEE
7
VSS
8
114
013
COM
3
U1
4051BC
MLED1
MLED2
MLED3
MLED4
MLED5
MLED6
MLED7
MLED8
SAFE1
SAFE2
SAFE3
SAFE4
SAFE5
SAFE6
SAFE7
SAFE8
R2
15K
R3
15K
R4
15K
R5
15K
R6
15K
R7
15K
R8
15K
R9
15K
R10
15K
R11
15K
R12
15K
R13
15K
R14
15K
R15
15K
R16
15K
R17
15K
D
3
A0
5A1
6A2
7
WD
4RST
2
Q0 9
Q1 10
Q2 11
Q3 12
Q4 13
Q5 14
Q6 15
Q7 1
VCC
16 GND 8
U2
4099B
D
3
A0
5A1
6A2
7
WD
4RST
2
Q0 9
Q1 10
Q2 11
Q3 12
Q4 13
Q5 14
Q6 15
Q7 1
VCC
16 GND 8
U3
4099B
0VD
JP1
LINK OPT
JP2
LINK OPT
JP3
LINK OPT
JP4
LINK OPT
BANK ASSIGN
1 OR 3
2 OR 4
3 OR 5
6
0VD
0VD
SW_IN
BANK9/11
BANK8/10
BANK7/9
BANK12
ML_OUT
SP_OUT
CA0
CA1
CA2
+5V
+5VIN
R1
1R0 PF
C2
47/25
C1
100N 100V/MLC
C3
47N/MYL
+5V
0VD
1
122
3
344
16 16
5
5
15
15
66
14 14
7
7
13
13
88
12 12
9
9
11
11 10 10
CN1
IDC 8X2 M 90 DEG
LK1
TC LINK
LK7
TC LINK
LK13
TC LINK
LK19
TC LINK
LK25
TC LINK
LK2
TC LINK
LK8
TC LINK
LK14
TC LINK
LK20
TC LINK
LK26
TC LINK
LK3
TC LINK
LK9
TC LINK
LK15
TC LINK
LK21
TC LINK
LK27
TC LINK
LK4
TC LINK
LK10
TC LINK
LK16
TC LINK
LK22
TC LINK
LK28
TC LINK
LK5
TC LINK
LK11
TC LINK
LK17
TC LINK
LK23
TC LINK
LK29
TC LINK
LK6
TC LINK
LK12
TC LINK
LK18
TC LINK
LK24
TC LINK
LK30
TC LINK
LK31
TC LINK
LK34
TC LINK
LK32
TC LINK
1 AAT 05-01-05 XXX
CONN REVERSED FITMENT COMP SIDE
LK36
LINK TCW
LK38
LINK TCW
MUTE1
MUTE2
MUTE3
MUTE4
MUTE5
MUTE6
MUTE7
MUTE8
R18 470K
R19 470K
R20 470K
R21 470K
R22 470K
R23 470K
R24 470K
R25 470K
+5V
2 AAT 29-03-05 XXX
003-417 iss.2

003-417 iss.2

Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
[phone]
[phone]
GL4800 MS CONN PCB
C6078 1 2
PAGE:
TITLE:
DRG No: ISSUE: SHEET: OF
FILE: C6078_2P1.Sch 11:47:30 10-May-2005
ALLEN&HEATH
Tel:
Fax: PRINTED:
ABCDEF GH
a
b
c
d
e
IJK
ISSUE BY DATE CHK
BY
1
2
3
4
5
6
7
8
9
10
11
12
CN105
FLEX SKT 12 WAY VERT
MUTE1
SAFE1
MLED1
3
1 2
0
CN104
XLR NC3FAV20
T
R
CN100
JACK V5M
T
R
CN101
JACK V3M
T
R
CN102
JACK V5M
T
R
CN103
JACK V5M
R100
33R
L100
0R0
L101
0R0
C102
1N5/MYL
JP100
LINK OPT
P100
PIN-SOLDER 1.5MM
0VA5
0VA6
AI1
HOLE-AI
1
2
3
4
5
6
7
8
9
10
11
12
CN105_1
FLEX SKT 12 WAY VERT
MUTE2
SAFE2
MLED2
3
1 2
0
CN104_1
XLR NC3FAV20
T
R
CN100_1
JACK V5M
T
R
CN101_1
JACK V3M
T
R
CN102_1
JACK V5M
T
R
CN103_1
JACK V5M
R100_1
33R
L100_1
0R0
L101_1
0R0
C102_1
1N5/MYL
JP100_1
LINK OPT
P100_1
PIN-SOLDER 1.5MM
0VA6
0VA7
SL1
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_2
FLEX SKT 12 WAY VERT
MUTE3
SAFE3
MLED3
3
1 2
0
CN104_2
XLR NC3FAV20
T
R
CN100_2
JACK V5M
T
R
CN101_2
JACK V3M
T
R
CN102_2
JACK V5M
T
R
CN103_2
JACK V5M
R100_2
33R
L100_2
0R0
L101_2
0R0
C102_2
1N5/MYL
JP100_2
LINK OPT
P100_2
PIN-SOLDER 1.5MM
0VA7
0VA8
SL2
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_3
FLEX SKT 12 WAY VERT
MUTE4
SAFE4
MLED4
3
1 2
0
CN104_3
XLR NC3FAV20
T
R
CN100_3
JACK V5M
T
R
CN101_3
JACK V3M
T
R
CN102_3
JACK V5M
T
R
CN103_3
JACK V5M
R100_3
33R
L100_3
0R0
L101_3
0R0
C102_3
1N5/MYL
JP100_3
LINK OPT
P100_3
PIN-SOLDER 1.5MM
0VA8
0VA5
SL3
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_4
FLEX SKT 12 WAY VERT
MUTE5
SAFE5
MLED5
3
1 2
0
CN104_4
XLR NC3FAV20
T
R
CN100_4
JACK V5M
T
R
CN101_4
JACK V5M
T
R
CN102_4
JACK V3M
T
R
CN103_4
JACK V3M
R103_4
33R
R102_4
33R
L104_4
FB-TH
C100_4
47/63
C101_4
47/63
R100_4
47K
R101_4
47K
L100_4
FB-TH
L101_4
FB-TH
L102_4
FB-TH
L103_4
FB-TH
C102_4
1N5/MYL
JP100_4
LINK OPT
P100_4
PIN-SOLDER 1.5MM
0VA1
0VA2
SL4
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_5
FLEX SKT 12 WAY VERT
MUTE6
SAFE6
MLED6
3
1 2
0
CN104_5
XLR NC3FAV20
T
R
CN100_5
JACK V5M
T
R
CN101_5
JACK V5M
T
R
CN102_5
JACK V3M
T
R
CN103_5
JACK V3M
R103_5
33R
R102_5
33R
L104_5
FB-TH
C100_5
47/63
C101_5
47/63
R100_5
47K
R101_5
47K
L100_5
FB-TH
L101_5
FB-TH
L102_5
FB-TH
L103_5
FB-TH
C102_5
1N5/MYL
JP100_5
LINK OPT
P100_5
PIN-SOLDER 1.5MM
0VA2
0VA3
SL5
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_6
FLEX SKT 12 WAY VERT
MUTE7
SAFE7
MLED7
3
1 2
0
CN104_6
XLR NC3FAV20
T
R
CN100_6
JACK V5M
T
R
CN101_6
JACK V5M
T
R
CN102_6
JACK V3M
T
R
CN103_6
JACK V3M
R103_6
33R
R102_6
33R
L104_6
FB-TH
C100_6
47/63
C101_6
47/63
R100_6
47K
R101_6
47K
L100_6
FB-TH
L101_6
FB-TH
L102_6
FB-TH
L103_6
FB-TH
C102_6
1N5/MYL
JP100_6
LINK OPT
P100_6
PIN-SOLDER 1.5MM
0VA3
0VA4
SL6
SLOT 18.0MM
1
2
3
4
5
6
7
8
9
10
11
12
CN105_7
FLEX SKT 12 WAY VERT
MUTE8
SAFE8
MLED8
3
1 2
0
CN104_7
XLR NC3FAV20
T
R
CN100_7
JACK V5M
T
R
CN101_7
JACK V5M
T
R
CN102_7
JACK V3M
T
R
CN103_7
JACK V3M
R103_7
33R
R102_7
33R
L104_7
FB-TH
C100_7
47/63
C101_7
47/63
R100_7
47K
R101_7
47K
L100_7
FB-TH
L101_7
FB-TH
L102_7
FB-TH
L103_7
FB-TH
C102_7
1N5/MYL
P100_7
PIN-SOLDER 1.5MM
0VA4
AI2
HOLE-AI
SL7
SLOT 18.0MM
1 AAT 05-01-05 XXX
STEREO CHANNEL 5 STEREO CHANNEL 6 STEREO CHANNEL 7 STEREO CHANNEL 8
CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4
P1
PIN-SOLDER 1.5MM
2 AAT 29-03-05 XXX
003-418 iss.2

Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
[phone]
[phone]
GL4800 MS CONN PCB
C6078 2 2
PAGE:
TITLE:
DRG No: ISSUE: SHEET: OF
ISSUE BY DATE
FILE: C6078_2P2.Sch 11:47:30 10-May-2005
ALLEN&HEATH
Tel:
Fax: PRINTED:
ABCDEFGH
a
b
c
d
e
CHK
BY
215
312
41
55
62
74
A
11
B
10
C
9
INH
6
VDD
16
VEE
7
VSS
8
114
013
COM
3
U1
4051BC
MLED1
MLED2
MLED3
MLED4
MLED5
MLED6
MLED7
MLED8
SAFE1
SAFE2
SAFE3
SAFE4
SAFE5
SAFE6
SAFE7
SAFE8
R2
15K
R3
15K
R4
15K
R5
15K
R6
15K
R7
15K
R8
15K
R9
15K
R10
15K
R11
15K
R12
15K
R13
15K
R14
15K
R15
15K
R16
15K
R17
15K
D
3
A0
5A1
6A2
7
WD
4RST
2
Q0 9
Q1 10
Q2 11
Q3 12
Q4 13
Q5 14
Q6 15
Q7 1
VCC
16 GND 8
U2
4099B
D
3
A0
5A1
6A2
7
WD
4RST
2
Q0 9
Q1 10
Q2 11
Q3 12
Q4 13
Q5 14
Q6 15
Q7 1
VCC
16 GND 8
U3
4099B
0VD
JP1
LINK OPT
JP2
LINK OPT
JP3
LINK OPT
JP4
LINK OPT
BANK ASSIGN
1 OR 3
2 OR 4
3 OR 5
6
0VD
0VD
SW_IN
BANK9/11
BANK8/10
BANK7/9
BANK12
ML_OUT
SP_OUT
CA0
CA1
CA2
+5V
+5VIN
R1
1R0 PF
C2
47/25
C1
100N 100V/MLC
C3
47N/MYL
+5V
0VD
1
122
3
344
16 16
5
5
15
15
66
14 14
7
7
13
13
88
12 12
9
9
11
11 10 10
CN1
IDC 8X2 M 90 DEG
LK1
TC LINK
LK7
TC LINK
LK13
TC LINK
LK19
TC LINK
LK25
TC LINK
LK2
TC LINK
LK8
TC LINK
LK14
TC LINK
LK20
TC LINK
LK26
TC LINK
LK3
TC LINK
LK9
TC LINK
LK15
TC LINK
LK21
TC LINK
LK27
TC LINK
LK4
TC LINK
LK10
TC LINK
LK16
TC LINK
LK22
TC LINK
LK28
TC LINK
LK5
TC LINK
LK11
TC LINK
LK17
TC LINK
LK23
TC LINK
LK29
TC LINK
LK6
TC LINK
LK12
TC LINK
LK18
TC LINK
LK24
TC LINK
LK30
TC LINK
LK31
TC LINK
LK34
TC LINK
LK32
TC LINK
1 AAT 05-01-05 XXX
CONN REVERSED FITMENT COMP SIDE
LK36
LINK TCW
LK38
LINK TCW
MUTE1
MUTE2
MUTE3
MUTE4
MUTE5
MUTE6
MUTE7
MUTE8
R18 470K
R19 470K
R20 470K
R21 470K
R22 470K
R23 470K
R24 470K
R25 470K
+5V
2 AAT 29-03-05 XXX
LK39
LINK TCW
003-418 iss.2