Allen & Heath GL4800 Service Manual
SERVICE INFORMATION
Publication AP6151
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 support@allen-heath.com
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
2 gl4800_ap6151_1.doc
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.
gl4800_ap6151_1.doc 3
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
4 gl4800_ap6151_1.doc
e
TO INPUT-8
CONNECTOR PCB
DIRECT OUT
INSERT
INSERT RETURN
MIC / LINE IN
MUTE_LED
+
0V
+
LINE IN
+
-
SAFE / PR
MUTE
FLEX SKT 12 WAY 90 DEG
1
2
3
4
5
6
7
8
9
10
11
12
CONN1
DIR_OUT
SEND
RETURNRETURN+
SGND
MLIN+
MLINMUTE_LED
SAFE/PR
MUTE
R4
6K8 1%
SW2PCOL (SPUN)
5
S15B
6K8 1%
C39
47/63
R5
47K
2
S15A
R6
C14
47/63
R43 22K
4
6
J1
1
LINK OPT
3
S1A
+
-
R1
47K
R3
12K 1%R212K 1%
SW2PCOL (SPUN)
1
3
S1B
4
6
MIC/LINE PHASE
PP +48V
2
5
1
3
S2A
SW2PCOL (SPUN)
46S2B
2
5
100K
R7
100K
R8
330P/DISK
C2 47/25
C3 47/25
C6
330P/DISK
INPUT PREAMP
R12
R9
C4
47K
C5
NF
R11
2K2 1%
R10
47K
D5
1N4002
4K7 1%
Q1
2SB737
820R 1%
1K2 1%
D6
1N4002
-VC
R13
R14
R15
47R
Q2
BC549
POT14 10KC X2
1 6
RV1A
C37
330/10
4
BC549
Q3
+VC+VC
R17
4K7 1%
Q4
2SB737
R18
820R 1%
R16
1K2 1%
-VC-VC
RV1B
POT14 10KC X2
2 5
3
R19
2K2 1%
R20
2K2 1%
GAIN
R21 680R
6
5
C7
22P/DISK
IC1B
NE5532
C8
100/25
R23 2K2 1%R22 2K2 1%
C9
22P/DISK
220N 100V/PE
POT14 200KC X2
LO-CUT FILTER
FREQ
RV2A
POT14 200KC X2
4
7
C10
C11
3
RV2B
2 5
R24
2K2 1%
16
2
3
R120
22K 1%
R25 2K2 1%
R121 6K8 1%
IC1A
NE5532
C12
47/25
R26 22R
R27
100K
SEND
1
R118 10K 1%
C42
47/25
47/25
R75
100K
C41
R91
10K 1%
R94
10K 1%
R112
10K 1%
2
3
C15
22P/DISK
IC6A
TL072
C13
22P/DISK
d
RETURN-
RETURN+
R63
100K
C1
PRE-EQ
100/25
R119
100K
1
1 3
RV3A
POT11 20KB C/D
R41
27K
HF MF1 MF2
2
R40
6K8
R42
3K9
C38
2N2/MYL
R44
NF RES
c
40 WAY RIBBON
CONN2
BOX 20X2 M 90 DEG
PP +48V
A1_MIX
A3_MIX
A5_MIX
A7_MIX
J39
A9_MIX
MTXA
MTXC
-V
+V
PFL_DC
PFLL_MIX
L_MIX
M_MIX
G8_MIX
G6_MIX
G4_MIX
G2_MIX
b
0R0
112
334
556
778
9910
111112
131314
151516
171718
191920
212122
232324
252526
272728
292930
313132
333334
353536
373738
393940
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
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%
R108
1R0 PF
R109
1R0 PF
R110
1R0 PF
R111
1R0 PF
R115 1R0 PF
C22
47/25
C23
47/25
R114 1R0 PF
C35
47/25
C40
47/25
C24
47N/MYL
+VA
+VB
+VC
-VC
-VB
-VA
3
R45 10K 1%R39 10K 1%
2
3
1
2
8
IC1C
V+
V-
NE5532
4
IC3A
TL072
1
POT11 20KB C/D
C16
1N5/MYL
R49
FREQ
RV4A
POT11 200KC X2 D/G
R47
22K
6K8
POT11 200KC X2 D/G
8
IC3C
V+
V-
TL072
4
R46 10K
RV5A
2
RV6A
8
IC4C
V+
V-
TL072
4
R122
6K8
R48
10K
3
13
1
8
4
2
6
5
IC6C
V+
V-
TL072
R50 10K 1%
IC3B
6
5
TL072
FREQ
R123 6K8
R124 12K
R52
6K8
C17
1N5/MYL
IC7B
TL072
+VC
8
IC7C
V+
V-
TL072
4
-VC
7
7
SW2PCOL (SPUN)
C34
47N/MYL
2
2
3
R55 10K 1%
IC4A
2
3
TL072
R57
6K8
FREQ
R128 6K8
R129 12K
C19
22N/MYL
1
IC7A
TL072
1
S17A
SW2PCOL (SPUN)
1
3
R130
6K8
R131
5K6
4
6
SW2PCOL (SPUN)
EQUALISER
R51 10K
POT11 20KB C/D
S16A
SW2PCOL (SPUN)
1
3
4
6
R125
6K8
R126
5K6
2
C18
QQ
S16B
3
IC2E
V+
V-
LM339
12
-VB
22N/MYL
POT11 200KC X2 D/G
5
+VA
+VB
8
IC5C
V+
V-
NE5532
4
-VA
R54
6K8
RV7A
2
RV8A
R127
6K8
R53
10K
3
13
1
R58 30K 2%
R56 10K 1%
RV9A
POT11 20KB C/D
1 3
LF
2
2
R59
15K
R60
8K2
5
S17B
AUDIO EARTH
E1
PIN-SOLDER 1.2MM
E2
R61
22K
6
5
1
3
2
10K 1%
R62
IC4B
TL072
C20
FREQ
RV10A
POT11 200KC X2 D/G
6N8/MYL
AI & ATE HOLES
AI1 AI2
HOLE-AI
ATE1
HOLE-ATE
7
C21
100/25
ATE2
EQ IN
4
6
R65
100K
1
3
SW2PCOL (SPUN)
AI3
AI4
5
S3B
SW2PCOL (SPUN)
R64
15K
2
S3A
PRE-EQ
POST-EQ
+VC
LD4
LED T1 3MM GREEN
-VC
a
ALLEN&HEATH
Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
Tel:
+44 (0)8707 556250
Fax:
+44 (0)8707 556251
ABCDEFGH
ISSUE BY DATE
2.1 AAT 22-03- 05 XXX
CHK
BY
FILE: C2621_2.1P1.SCH 09:49:23 16-Jun-2005
PRINTED:
TITLE:
GL4800 MONO INPUT
PAGE:
DRG No: ISSUE: SHEET: OF
AG2621 1 2
2.1
003-410 iss.2.1
+VB
A10_MIX
AUX10
AUX1 AUX2 AUX3 AUX4 AUX5 AUX6 AUX7 AUX8 AUX9
A1_MIX A2_MIX A3_MIX A4_MIX A5_MIX A6_MIX A7_MIX A8_MIX A9_MIX
NF LINK
13
RV19A
POT11 20KK
J27
J26
NF LINK
SW2PCOL (SPUN)
R85
10K 1%
2
J28
LINK
POST / PRE 9-10
13
RV11A
POT11 20KK
R77
10K 1%
2
13
R78
10K 1%
2
RV12A
POT11 20KK
13
RV13A
POT11 20KK
2
R79
10K 1%
13
RV14A
POT11 20KK
2
R80
10K 1%
13
RV15A
POT11 20KK
R81
10K 1%
2
13
RV16A
POT11 20KK
2
R82
10K 1%
13
RV17A
POT11 20KK
2
R83
10K 1%
13
RV18A
POT11 20KK
R84
10K 1%
2
e
J24
J18
S7A
S7B
J19
LINK
NF LINK
1
3
4
6
J12
J6
J3
LINK
NF LINK
P S AP S APS APS APS AP S AP S APS APS AP S A
R117
100K
J5
J4
NF LINK
NF LINK
P = PRE-FADE
S = SWITCHED
A = POST-FADE
J7
LINK
NF LINK
POST / PRE 1-4
SW2PCOL (SPUN)
J9
J8
LINK
NF LINK
S6A
2
5
S6B
J11
J10
NF LINK
NF LINK
1
3
4
6
J13
LINK
NF LINK
J14
NF LINK
J15
LINK
J17
J16
NF LINK
NF LINK
POST / PRE 5-8
2
SW2PCOL (SPUN)
5
J20
NF LINK
J21
LINK
J22
NF LINK
J23
NF LINK
J25
LINK
2
5
NF LINK
S8A
S8B
/ DIR OUT
13
2
RV20A
POT11 20KK
J30
J29
LINK
NF LINK
1
3
4
6
R132
6K8 1%
J31
NF LINK
R86
4K7 1%
J32
1
3
SW2PCOL (SPUN)
S18A
J2 NF LINK OPT
4
6
S18B
J37 12K 1%
J38 NF LINK OPT
DIR OUT OPTIONS
d
R95 10K
PRE-EQ
POST-EQ
PFLR_MIX
PFLL_MIX
SIGNAL METER
c
R31
15K
POST-EQ
C43
1/63
b
-VB
R29
39K
150N 63V/PE
R113
33K
R28 4K7
D3
1N4148
C27
D2
1N4148
C44
2N7/MYL
R37
680K
-VB
-VB
R38
10M
R33
180R
R34
220R
R35
1K5
R32
120R
R36
3K3
+VB
D1 1N4148
4
5
6
7
8
9
10
11
IC2A
LM339
IC2B
LM339
IC2C
LM339
IC2D
LM339
+VB
R30
6K8
2
1
14
13
LD6
LED BAR MB4 SQ_1
-VB
R139
22K 1%
R66
22K 1%
LED T1 3MM YELLOW
5
LD3
S4B
SAFE/PR
PFL
2
4
6
S4A
R67 15K
47N/MYL
R68
47K
-VB
1
3
R71
8K2
+VB
C25
PFL_DC
Q5
2N4403
R69
8K2
LED T1 3MM GREEN
J33 NF LINK OPT
PRE EQ
POST EQ
J34 LINK OPT
FADER
P1
RED
BLUE
P2
P3
GREEN
PIN-SOLDER 1.2MM
LD8
R89
100K
R74
6K8 1%
MUTE_LED
R87
10K
R88
8K2
J36
NF LINK OPT
PRE-MUTE
POST-MUTE
J35
LINK OPT
R90
6K8 1%
Q7 J111N
R92
47K
PRE-FADE
AUX OPTION
Q8 J111N
R93
47K
Q6
2N4403
C26
47N/MYL
R70
47K
-VB
MUTE
R72
100K
R116
820R 1%
C28
100/25
C29
100/25
D4 1N4148
R73
4K7
R76
1M0
6
5
2
3
C30
22P/DISK
7
IC5B
NE5532
PRE FADE
R96 22K 1%
C31
22P/DISK
1
IC5A
NE5532
POST FADE
C46
47N/MYL
MUTE
LD1
LD2
LED T1 3MM RED
1
S5A
3
4
S5B
6
C32
100/25
PAN
C33
100/25
2
5
R134
8K2
LD5
LED T1 3MM GREEN
2
5
16
4
RV22A
POT14 10KAC C/D
25
3
RV22B
POT14 10KAC C/D
R107
10K 1%
R133
10K 1%
C36
22P/DISK
R135
22K 1%
IC6B
C45
47/25
R137
22R
DIR_OUT
7
6
5
R136
100K
TL072
ROUTING
1
R97
22K 1%
R98
22K 1%
R99
22K 1%
R100
22K 1%
R101
10K 1%
R102
22K 1%
R103
22K 1%
R104
22K 1%
R105
22K 1%
R106
10K 1%
S13A
2
2
2
2
2
5
5
5
5
5
S14A
2
S14B
5
S12A
S11A
S10A
S9A
S13B
S12B
S11B
S10B
S9B
3
1
3
1
3
1
3
1
3
4
6
4
6
4
6
4
6
4
6
1
3
4
6
G7_MIX
G5_MIX
G3_MIX
G1_MIX
L_MIX
G8_MIX
G6_MIX
G4_MIX
G2_MIX
R_MIX
M_MIX
a
ALLEN&HEATH
Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
Tel:
+44 (0)8707 556250
Fax:
+44 (0)8707 556251
ABCDEFGH
ISSUE BY DATE
2.1 AAT 22-03- 05 XXX
CHK
BY
FILE: C2621_2.1P2.SCH 09:49:24 16-Jun-2005
PRINTED:
TITLE:
GL4800 MONO INPUT
PAGE:
DRG No: ISSUE: SHEET: OF
AG2621 2 2
2.1
003-410 iss.2.1
003-410 iss.2.1
GL4800
003-411 iss.3.1
003-411 iss.3.1
3
CN104
1 2
XLR NC3FAV20
0
CN100
JACK V5M
T
R
CN101
JACK V5M
T
R
R100
47K
C100
47/63
R101
47K
C101
47/63
CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4
L100
FB-TH
L101
FB-TH
L102
FB-TH
L103
FB-TH
C102
1N/MYL
MUTE1
SAFE1
MLED1
CN105
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
3
CN104_1
1 2
XLR NC3FAV20
0
CN100_1
JACK V5M
T
R
CN101_1
JACK V5M
T
R
C100_1
47/63
R100_1
47K
C101_1
47/63
R101_1
47K
L100_1
FB-TH
L101_1
FB-TH
L102_1
FB-TH
L103_1
FB-TH
C102_1
1N/MYL
MUTE2
SAFE2
MLED2
CN105_1
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
SL1
SLOT 18.0MM
3
CN104_2
1 2
XLR NC3FAV20
0
CN100_2
JACK V5M
T
R
CN101_2
JACK V5M
T
R
C100_2
47/63
R100_2
47K
C101_2
47/63
R101_2
47K
L100_2
FB-TH
L101_2
FB-TH
L102_2
FB-TH
L103_2
FB-TH
C102_2
1N/MYL
MUTE3
SAFE3
MLED3
CN105_2
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
SL2
SLOT 18.0MM
3
CN104_3
1 2
XLR NC3FAV20
0
CN100_3
JACK V5M
T
R
CN101_3
JACK V5M
T
R
C100_3
47/63
R100_3
47K
C101_3
47/63
R101_3
47K
L100_3
FB-TH
L101_3
FB-TH
L102_3
FB-TH
L103_3
FB-TH
C102_3
1N/MYL
MUTE4
SAFE4
MLED4
CN105_3
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
SL3
SLOT 18.0MM
CN102
JACK V3M
CN103
JACK V3M
T
R
T
R
R102
33R
L104
FB-TH
R103
33R
0VA1
JP100
LINK OPT
AI1
HOLE-AI
P100
PIN-SOLDER 1.5MM
0VA2
CN102_1
JACK V3M
CN103_1
JACK V3M
T
R
T
R
R102_1
33R
L104_1
FB-TH
R103_1
33R
0VA2
JP100_1
LINK OPT
P100_1
PIN-SOLDER 1.5MM
0VA3
CN102_2
JACK V3M
CN103_2
JACK V3M
T
R
T
R
R102_2
33R
L104_2
FB-TH
R103_2
33R
0VA3
JP100_2
LINK OPT
P100_2
PIN-SOLDER 1.5MM
0VA4
CN102_3
JACK V3M
CN103_3
JACK V3M
T
R
T
R
R102_3
33R
L104_3
FB-TH
R103_3
33R
0VA4
JP100_3
LINK OPT
P100_3
PIN-SOLDER 1.5MM
0VA5
e
CHANNEL 5 CHANNEL 6 CHANNEL 7 CHANNEL 8
3
CN104_4
d
c
1 2
XLR NC3FAV20
0
CN100_4
JACK V5M
T
R
CN101_4
JACK V5M
T
R
C100_4
47/63
R100_4
47K
C101_4
47/63
R101_4
47K
L100_4
FB-TH
L101_4
FB-TH
L102_4
FB-TH
L103_4
FB-TH
C102_4
1N/MYL
MUTE5
SAFE5
MLED5
CN105_4
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
SL4
SLOT 18.0MM
3
CN104_5
1 2
XLR NC3FAV20
0
CN100_5
JACK V5M
T
R
CN101_5
JACK V5M
T
R
C100_5
47/63
R100_5
47K
C101_5
47/63
R101_5
47K
L100_5
FB-TH
L101_5
FB-TH
L102_5
FB-TH
L103_5
FB-TH
C102_5
1N/MYL
MUTE6
SAFE6
MLED6
CN105_5
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
SL5
SLOT 18.0MM
3
CN104_6
1 2
XLR NC3FAV20
0
CN100_6
JACK V5M
T
R
CN101_6
JACK V5M
T
R
C100_6
47/63
R100_6
47K
C101_6
47/63
R101_6
47K
L100_6
FB-TH
L101_6
FB-TH
L102_6
FB-TH
L103_6
FB-TH
C102_6
1N/MYL
MUTE7
SAFE7
MLED7
CN105_6
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
SL6
SLOT 18.0MM
3
CN104_7
1 2
XLR NC3FAV20
0
CN100_7
JACK V5M
T
R
CN101_7
JACK V5M
T
R
C100_7
47/63
R100_7
47K
C101_7
47/63
R101_7
47K
L100_7
FB-TH
L101_7
FB-TH
L102_7
FB-TH
L103_7
FB-TH
C102_7
1N/MYL
MUTE8
SAFE8
MLED8
CN105_7
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
SL7
SLOT 18.0MM
b
a
ALLEN&HEATH
Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
+44 (0)8707 556250
Tel:
+44 (0)8707 556251
Fax:
ABCDE F GH
CN102_4
JACK V3M
CN103_4
JACK V3M
T
R
T
R
ISSUE BY DATE
1 AAT 05-01-05 XXX
2 AAT 23-03-05 XXX
R102_4
33R
L104_4
FB-TH
R103_4
33R
P100_4
0VA5
PIN-SOLDER 1.5MM
JP100_4
0VA6
LINK OPT
CHK
BY
FILE: C6075_2P1.Sch 12:03:02 10-May-2005
PRINTED:
CN102_5
JACK V3M
CN103_5
JACK V3M
T
R
T
R
R102_5
33R
L104_5
FB-TH
R103_5
33R
0VA6
JP100_5
LINK OPT
P100_5
PIN-SOLDER 1.5MM
0VA7
CN102_6
JACK V3M
CN103_6
JACK V3M
T
R
T
R
R102_6
33R
L104_6
FB-TH
R103_6
33R
0VA7
JP100_6
LINK OPT
P100_6
PIN-SOLDER 1.5MM
0VA8
CN102_7
JACK V3M
CN103_7
JACK V3M
T
R
T
R
R102_7
33R
L104_7
FB-TH
R103_7
33R
AI2
HOLE-AI
P100_7
0VA8
PIN-SOLDER 1.5MM
TITLE:
GL4800 IN8M CONN PCB
PAGE:
C6075 1 2
DRG No: I SSUE: SHEET: OF
2
IJK
003-416 iss.2
R18
R19
R20
R21
R22
R23
R24
R25
+5V
470K
470K
470K
470K
470K
470K
470K
470K
MUTE8
MUTE7
MUTE6
MUTE5
MUTE4
MUTE3
MUTE2
MUTE1
R2
15K
R3
15K
R4
15K
R5
15K
R6
15K
R7
15K
R8
15K
R9
15K
MLED8
MLED7
MLED6
MLED5
MLED4
MLED3
MLED2
MLED1
LK1
TC LINK
LK2
TC LINK
LK3
TC LINK
LK4
TC LINK
LK5
TC LINK
LK6
TC LINK
LK7
TC LINK
LK8
TC LINK
LK9
TC LINK
LK10
TC LINK
LK11
TC LINK
LK12
TC LINK
LK13
TC LINK
LK14
TC LINK
LK15
TC LINK
LK16
TC LINK
LK17
TC LINK
LK18
TC LINK
LK19
TC LINK
LK20
TC LINK
LK21
TC LINK
LK22
TC LINK
LK23
TC LINK
LK24
TC LINK
LK25
TC LINK
LK26
TC LINK
LK27
TC LINK
LK28
TC LINK
LK29
TC LINK
LK30
TC LINK
LK31
TC LINK
LK32
TC LINK
LK34
TC LINK
+5V
U1
8
VSS
7
VEE
e
d
100N 100V/MLC
+5V
C1
0VD
C2
47/25
C3
47N/MYL
R1
10R PF AX
CONN REVERSED FITMENT COMP SIDE
0VD
+5VIN
BANK7/9
BANK8/10
BANK9/11
SW_IN
CN1
112
334
5
5
7
7
9
9
11
11
13
13
15
15
IDC 8X2 M 90 DEG
0VD
2
4
BANK12
CA0
6
6
8
CA1
8
10
12
14
16
CA2
SP_OUT
ML_OUT
10
12
14
16
6
INH
9
C
10
B
11
A
3
COM
16
VDD
4051BC
8
U2
2
RST
4
WD
Q7
GND
Q6
7
6
5
3
4099B
Q5
A2
Q4
A1
Q3
A0
Q2
Q1
D
Q0
VCC
16
4
7
2
6
5
5
1
4
12
3
15
2
14
1
13
0
1
15
14
13
12
11
10
9
c
b
a
ALLEN&HEATH
Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
+44 (0)8707 556250
Tel:
+44 (0)8707 556251
Fax:
ABCDEFGH
ISSUE BY DATE
1 AAT 05-01-05 XXX
2 AAT 23-03-05 XXX
R10
SAFE8
JP1
1 OR 3
LINK OPT
JP2
2 OR 4
LINK OPT
JP3
3 OR 5
LINK OPT
JP4
6
LINK OPT
BANK ASSIGN
0VD
CHK
BY
FILE: C6075_2P2.Sch 12:03:03 10-May-2005
2
4
7
6
5
3
U3
RST
WD
A2
A1
A0
D
4099B
8
16
GND
VCC
1
Q7
15
Q6
14
Q5
13
Q4
12
Q3
11
Q2
10
Q1
9
Q0
15K
R11
15K
R12
15K
R13
15K
R14
15K
R15
15K
R16
15K
R17
15K
SAFE7
SAFE6
SAFE5
SAFE4
SAFE3
SAFE2
SAFE1
PRINTED:
TITLE:
GL4800 IN8M CONN PCB
PAGE:
DRG No: ISSUE: SHEET: OF
C6075 2 2
2
003-416 iss.2
003-416 iss.2
3
CN104
1 2
XLR NC3FAV20
0
CN100
JACK V5M
T
R
L100
0R0
L101
0R0
STEREO CHANNEL 1 STEREO CHANNEL 2 STEREO CHANNEL 3 STEREO CHANNEL 4
C102
1N/MYL
MUTE1
SAFE1
MLED1
CN105
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
3
CN104_1
1 2
XLR NC3FAV20
0
CN100_1
JACK V5M
T
R
L100_1
0R0
L101_1
0R0
C102_1
1N/MYL
MUTE2
SAFE2
MLED2
CN105_1
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
3
CN104_2
1 2
XLR NC3FAV20
0
CN100_2
JACK V5M
T
R
L100_2
0R0
L101_2
0R0
C102_2
1N/MYL
MUTE3
SAFE3
MLED3
CN105_2
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
3
CN104_3
1 2
XLR NC3FAV20
0
CN100_3
JACK V5M
T
R
L100_3
0R0
L101_3
0R0
C102_3
1N/MYL
MUTE4
SAFE4
MLED4
CN105_3
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
CN101
JACK V3M
T
R
CN102
JACK V5M
R
CN103
JACK V5M
R
e
R100
33R
T
T
P100
0VA1
PIN-SOLDER 1.5MM
JP100
0VA2
LINK OPT
AI1
HOLE-AI
AI2
SLOT-AI
CN101_1
JACK V3M
CN102_1
JACK V5M
CN103_1
JACK V5M
CN101_2
T
R
R
R
R100_1
33R
T
T
P100_1
0VA2
PIN-SOLDER 1.5MM
JP100_1
0VA3
LINK OPT
SL1
SLOT 18.0MM
JACK V3M
CN102_2
JACK V5M
CN103_2
JACK V5M
T
R
R
R
R100_2
33R
T
T
P100_2
0VA3
PIN-SOLDER 1.5MM
JP100_2
0VA4
LINK OPT
SL2
SLOT 18.0MM
CN101_3
JACK V3M
CN102_3
JACK V5M
CN103_3
JACK V5M
T
R
R
R
R100_3
33R
T
T
P100_3
0VA4
PIN-SOLDER 1.5MM
JP100_3
0VA5
LINK OPT
SL3
SLOT 18.0MM
STEREO CHANNEL 5 STEREO CHANNEL 6 STEREO CHANNEL 7 STEREO CHANNEL 8
3
CN104_4
d
1 2
XLR NC3FAV20
0
CN100_4
JACK V5M
T
R
L100_4
0R0
L101_4
0R0
C102_4
1N/MYL
MUTE5
SAFE5
MLED5
CN105_4
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
3
CN104_5
1 2
XLR NC3FAV20
0
CN100_5
JACK V5M
T
R
L100_5
0R0
L101_5
0R0
C102_5
1N/MYL
MUTE6
SAFE6
MLED6
CN105_5
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
3
CN104_6
1 2
XLR NC3FAV20
0
CN100_6
JACK V5M
T
R
L100_6
0R0
L101_6
0R0
C102_6
1N/MYL
MUTE7
SAFE7
MLED7
CN105_6
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
3
CN104_7
1 2
XLR NC3FAV20
0
CN100_7
JACK V5M
T
R
L100_7
0R0
L101_7
0R0
C102_7
1N/MYL
MUTE8
SAFE8
MLED8
CN105_7
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
c
b
a
ALLEN&HEATH
Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
+44 (0)8707 556250
Tel:
+44 (0)8707 556251
Fax:
ABCDE F GH
CN101_4
JACK V3M
CN102_4
JACK V5M
CN103_4
JACK V5M
T
R
R
R
R100_4
33R
T
T
ISSUE BY DATE
1 AAT 05-01-05 XXX
2 AAT 24-03-05 XXX
SL4
SLOT 18.0MM
P100_4
0VA5
PIN-SOLDER 1.5MM
JP100_4
0VA6
LINK OPT
CHK
BY
FILE: C6076_2P1.Sch 11:58:39 10-May-2005
PRINTED:
CN101_5
JACK V3M
CN102_5
JACK V5M
CN103_5
JACK V5M
CN101_6
T
R
R
R
R100_5
33R
T
T
P100_5
0VA6
PIN-SOLDER 1.5MM
JP100_5
0VA7
LINK OPT
SL5
SLOT 18.0MM
P1
PIN-SOLDER 1.5MM
JACK V3M
CN102_6
JACK V5M
CN103_6
JACK V5M
T
R
R
R
R100_6
33R
T
T
P100_6
0VA7
PIN-SOLDER 1.5MM
JP100_6
0VA8
LINK OPT
SL6
SLOT 18.0MM
CN101_7
JACK V3M
CN102_7
JACK V5M
CN103_7
JACK V5M
T
R
R
R
R100_7
33R
T
T
P100_7
0VA8
PIN-SOLDER 1.5MM
TITLE:
L4D 8S CONN PCB
SL7
SLOT 18.0MM
PAGE:
C6076 1 2
DRG No: I SSUE: SHEET: OF
2
IJK
003-419 iss.2
R18
R19
R20
R21
R22
R23
R24
R25
+5V
470K
470K
470K
470K
470K
470K
470K
470K
MUTE8
MUTE7
MUTE6
MUTE5
MUTE4
MUTE3
MUTE2
MUTE1
R2
15K
R3
15K
R4
15K
R5
15K
R6
15K
R7
15K
R8
15K
R9
15K
MLED8
MLED7
MLED6
MLED5
MLED4
MLED3
MLED2
MLED1
LK1
TC LINK
LK2
TC LINK
LK3
TC LINK
LK4
TC LINK
LK5
TC LINK
LK6
TC LINK
LK7
TC LINK
LK8
TC LINK
LK9
TC LINK
LK10
TC LINK
LK11
TC LINK
LK12
TC LINK
LK13
TC LINK
LK14
TC LINK
LK15
TC LINK
LK16
TC LINK
LK17
TC LINK
LK18
TC LINK
LK19
TC LINK
LK20
TC LINK
LK21
TC LINK
LK22
TC LINK
LK23
TC LINK
LK24
TC LINK
LK25
TC LINK
LK26
TC LINK
LK27
TC LINK
LK28
TC LINK
LK29
TC LINK
LK30
TC LINK
LK31
TC LINK
LK32
TC LINK
LK33
TC LINK
LK34
TC LINK
LK35
LINK TCW
LK36
LINK TCW
LK37
LINK TCW
LK38
LINK TCW
LK39
LINK TCW
+5V
U1
8
VSS
7
VEE
e
d
100N 100V/MLC
+5V
C1
0VD
C2
47/25
C3
47N/MYL
R1
10R PF AX
CONN REVERSED FITMENT COMP SIDE
0VD
+5VIN
BANK7/9
BANK8/10
BANK9/11
SW_IN
CN1
112
334
5
5
7
7
9
9
11
11
13
13
15
15
IDC 8X2 M 90 DEG
0VD
2
4
BANK12
CA0
6
6
8
CA1
8
10
12
14
16
CA2
SP_OUT
ML_OUT
10
12
14
16
6
INH
9
C
10
B
11
A
3
COM
16
VDD
4051BC
8
U2
2
RST
4
WD
Q7
GND
Q6
7
6
5
3
4099B
Q5
A2
Q4
A1
Q3
A0
Q2
Q1
D
Q0
VCC
16
4
7
2
6
5
5
1
4
12
3
15
2
14
1
13
0
1
15
14
13
12
11
10
9
c
b
a
ALLEN&HEATH
Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
+44 (0)8707 556250
Tel:
+44 (0)8707 556251
Fax:
ABCDEFGH
ISSUE BY DATE
1 AAT 05-01-05 XXX
2 AAT 24-03-05 XXX
R10
SAFE8
JP1
1 OR 3
LINK OPT
JP2
2 OR 4
LINK OPT
JP3
3 OR 5
LINK OPT
JP4
6
LINK OPT
BANK ASSIGN
0VD
CHK
BY
FILE: C6076_2P2.Sch 11:58:40 10-May-2005
2
4
7
6
5
3
U3
RST
WD
A2
A1
A0
D
4099B
8
16
GND
VCC
1
Q7
15
Q6
14
Q5
13
Q4
12
Q3
11
Q2
10
Q1
9
Q0
15K
R11
15K
R12
15K
R13
15K
R14
15K
R15
15K
R16
15K
R17
15K
SAFE7
SAFE6
SAFE5
SAFE4
SAFE3
SAFE2
SAFE1
PRINTED:
TITLE:
L4D 8S CONN PCB
PAGE:
DRG No: ISSUE: SHEET: OF
C6076 2 2
2
003-419 iss.2
003-419 iss.2
3
CN104
1 2
XLR NC3FAV20
0
CN100
JACK V5M
T
R
L100
0R0
L101
0R0
STEREO CHANNEL 1 STEREO CHANNEL 2 STEREO CHANNEL 3 STEREO CHANNEL 4
C102
1N5/MYL
MUTE1
SAFE1
MLED1
CN105
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
3
CN104_1
1 2
XLR NC3FAV20
0
CN100_1
JACK V5M
T
R
L100_1
0R0
L101_1
0R0
C102_1
1N5/MYL
MUTE2
SAFE2
MLED2
CN105_1
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
3
CN104_2
1 2
XLR NC3FAV20
0
CN100_2
JACK V5M
T
R
L100_2
0R0
L101_2
0R0
C102_2
1N5/MYL
MUTE3
SAFE3
MLED3
CN105_2
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
3
CN104_3
1 2
XLR NC3FAV20
0
CN100_3
JACK V5M
T
R
L100_3
0R0
L101_3
0R0
C102_3
1N5/MYL
MUTE4
SAFE4
MLED4
CN105_3
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
CN101
JACK V3M
T
R
CN102
JACK V5M
R
CN103
JACK V5M
R
e
R100
33R
T
T
P100
0VA1
PIN-SOLDER 1.5MM
JP100
0VA2
LINK OPT
AI1
HOLE-AI
CN101_1
JACK V3M
CN102_1
JACK V5M
CN103_1
JACK V5M
CN101_2
T
R
R
R
R100_1
33R
T
T
P100_1
0VA2
PIN-SOLDER 1.5MM
JP100_1
0VA3
LINK OPT
SL1
SLOT 18.0MM
JACK V3M
CN102_2
JACK V5M
CN103_2
JACK V5M
T
R
R
R
R100_2
33R
T
T
P100_2
0VA3
PIN-SOLDER 1.5MM
JP100_2
0VA4
LINK OPT
SL2
SLOT 18.0MM
CN101_3
JACK V3M
CN102_3
JACK V5M
CN103_3
JACK V5M
T
R
R
R
R100_3
33R
T
T
P100_3
0VA4
PIN-SOLDER 1.5MM
JP100_3
0VA5
LINK OPT
SL3
SLOT 18.0MM
CHANNEL 5 CHANNEL 6 CHANNEL 7 CHANNEL 8
3
CN104_4
d
c
1 2
XLR NC3FAV20
0
CN100_4
JACK V5M
T
R
CN101_4
JACK V5M
T
R
CN102_4
JACK V3M
T
R
CN103_4
JACK V3M
T
R
C100_4
47/63
R100_4
47K
R102_4
33R
L104_4
FB-TH
R103_4
33R
C101_4
47/63
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
MUTE5
SAFE5
MLED5
0VA5
CN105_4
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
SL4
SLOT 18.0MM
P100_4
PIN-SOLDER 1.5MM
0VA6
3
CN104_5
1 2
XLR NC3FAV20
0
CN100_5
JACK V5M
T
R
CN101_5
JACK V5M
T
R
CN102_5
JACK V3M
T
R
CN103_5
JACK V3M
T
R
C100_5
47/63
R100_5
47K
R102_5
33R
L104_5
FB-TH
R103_5
33R
C101_5
47/63
R101_5
47K
L100_5
FB-TH
L101_5
FB-TH
L102_5
FB-TH
L103_5
FB-TH
C102_5
1N5/MYL
MUTE6
SAFE6
MLED6
0VA6
JP100_5
LINK OPT
CN105_5
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
SL5
SLOT 18.0MM
P100_5
PIN-SOLDER 1.5MM
0VA7
3
CN104_6
1 2
XLR NC3FAV20
0
CN100_6
JACK V5M
T
R
CN101_6
JACK V5M
T
R
CN102_6
JACK V3M
T
R
CN103_6
JACK V3M
T
R
C100_6
47/63
R100_6
47K
R102_6
33R
L104_6
FB-TH
R103_6
33R
C101_6
47/63
R101_6
47K
L100_6
FB-TH
L101_6
FB-TH
L102_6
FB-TH
L103_6
FB-TH
C102_6
1N5/MYL
MUTE7
SAFE7
MLED7
0VA7
JP100_6
LINK OPT
CN105_6
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
SL6
SLOT 18.0MM
P100_6
PIN-SOLDER 1.5MM
0VA8
3
CN104_7
1 2
XLR NC3FAV20
0
CN100_7
JACK V5M
T
R
CN101_7
JACK V5M
T
R
CN102_7
JACK V3M
T
R
CN103_7
JACK V3M
T
R
C100_7
47/63
R100_7
47K
R102_7
33R
L104_7
FB-TH
R103_7
33R
C101_7
47/63
R101_7
47K
L100_7
FB-TH
L101_7
FB-TH
L102_7
FB-TH
L103_7
FB-TH
C102_7
1N5/MYL
MUTE8
SAFE8
MLED8
0VA8
CN105_7
12
11
10
9
8
7
6
5
4
3
2
1
FLEX SKT 12 WAY VERT
SL7
SLOT 18.0MM
AI2
HOLE-AI
P100_7
PIN-SOLDER 1.5MM
b
a
ALLEN&HEATH
Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
+44 (0)8707 556250
Tel:
+44 (0)8707 556251
Fax:
ABCDE F GH
ISSUE BY DATE
1 AAT 05-01-05 XXX
2 AAT 29-03-05 XXX
CHK
BY
FILE: C6077_2P1.Sch 11:29:52 10-May-2005
PRINTED:
P1
PIN-SOLDER 1.5MM
TITLE:
GL4800 SM CONN PCB
PAGE:
C6077 1 2
DRG No: I SSUE: SHEET: OF
2
IJK
003-417 iss.2
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