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AV8 service manual
1
1
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147 pages, 3.91 Mb
AV
8
FMJ A
V8
Preamp Processor
Service Manual
ARCAM
ARCAM
Issue 2.0
Contents
Main
Contents List
Section Issue
Manual Updates
Service Manual changes issue 1.0 to 2.0
Summary Issue 1.0 to 2.0
Page
OUT
1
N1501
OUTPUTS DVD-A/SACD IN
SERIAL No. LABEL
WARNING: THIS APPLIANCE MUST BE EARTHED
MC
AV8 PREAMP PROCESSOR
MODEEFFECTTHX
Page
Technical Specifications
Page
AV8 Engineering Mode
AV8 Programmer
AV8 Loader (Preset Backup)
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AV8 Phono Board
Circuit Description Refer to circuit diagram L870 sheet 1
PSU
Interface
Amplification
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Page
L870 Phono Board Parts List Issue 2.0
A85 PHONO STAGE - TOP LEVEL
EMC
PCB
L870C1
A85 PHONO STAGE - LEFT CHANNEL
L870C2
+
4N7 PP
0V_SIG0V_SIG
A85 PHONO STAGE - RIGHT CHANNEL
L870C3
+
0V_SIG0V_SIG
9
Page
AV8 Digital Board
Introduction Refer to circuit diagram L896 sheet 1
Connections
ADC Refer to circuit diagram L896 Sheet 2
DAC Refer to circuit diagram L896 Sheets 3,4,5,6
DSP Refer to circuit diagram L896 Sheet 7
SPDIF Refer to circuit diagram L896 Sheet 8
Microprocessor Refer to circuit diagram L896 Sheet 9
Power Supply Refer to circuit diagram L896 Sheet 10
Re-clocking Refer to circuit diagram L896 Sheet 11
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AV8 DIGITAL BOARD TOP LEVEL
AV8 DIGITAL BOARD
AV8 Analogue to Digital Converter
AV8 DAC Centre and Sub
AV8 DAC Left and Right
AV8 DAC Left and Right Surround Back
AV8 DAC Left and Right Surround
AV8 Dolby Digital and THX DSP
AV8 SPDIF Receiver
NF
AV8 Micro Controller
AV8 Digital Board Power Supply
P36VF1 0VF1 P36VSET P5VF2 OVF2 P5VF2SET
AV8 Reclocking
Page
AV8 Power Supply Board
External Synchronisatio n Input
External PSU Kill Signal
Under-voltage lockout
Output Over-voltage Protection
Overcurrent Protection
Mains Present Signal
Inrush current protection
PSU Over-temperature Protection
Figure 1
Figure 1
DGND
Gate Drive
Primay Current
54
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Page
Page
Page
Page
40W Universal Power Supply
+
CONTROL PCB
+
MAIN PCB
+
Page
AV8 Display Board
Refer to circuit diagram L898 sheet 1
Introduction
Power Supply
LEDs
Page
Page
L898 Display Board Parts List Issue 1.2
AV8 DISPLAY AND KEYBOARD
G
R
L898CT AD
+
Page
AV8 Audio Board
BLOCK DIAGRAM
Input swit ching Refer to circuit diagram L921 sheet 1
Input gain range Refer to circuit diagram L921 sheet 3
Volume control and headphones Refer to circuit diagram L921 sheet 5,6
Zone2 and record loop outputs Refer to circuit diagram L921 sheet 4
Control lines from the micro Refer to circuit diagram L921 sheet 7
Power supply Refer to circuit diagram L921 sheet 8
General Overlay / Interconnections Refer to circuit diagram L921 sheet 9
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L921 Audio Board Parts List Issue 1.2
Page
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Page
L921CT - AV8 audio board interconnections
TAPE OUT
02_E028
(Page 6)
MJT 29/01/02 Production release 1.1
L921CT - AV8 audio board gain range section
L921C3 AD/SUBCON
L921CT - AV8 audio board input matrix buffer amps
TAPE OUTPUT
VCR OUTPUT
L921C4 AD/subcon
L921CT - AV8 audio Main, Zone 2 and Phones outputs
L921C5
TO PHONES JACK
MJT 29/01/02 Production release 1.1
100mW 20-30 ohms
L921CT - AV8 audio Surround, Centre/Sub, & Ex outputs
L921C6
SURROUND
02_E028
1.1Production release29/01/02MJT
L921CT - AV8 audio board control logic circuit
IP MUX IP MUX
MAIN DCA ZONE 2 DCA SURROUND DCA CENTRE/SUB DCA EX DCA
L921C7
GAIN RANGE INT/EXT MUTES
L921CT - AV8 audio volume controls source select
SURROUND RIGHT
EXT PROCESSOR ENABLE LINE
EX RIGHT
L921C2
L921CT - AV8 audio board power supply regulators
L921C8 AD/subcon
+
MJT 29/01/02 Production release 1.102_E028
+
L921CT - AV8 Audio board input switching section
L921C1
AUX DVD SAT AV VCR TAPE CD TUNER
Page
AV8 Video Board
Introduction
Video PCB Icons + Mechanical Refer to circuit diagram L922 sheet 1
Video Board Top Refer to circuit diagram L922 sheet 2
Video Board Refer to circuit diagram L922 sheet 3
RC5 I/O Triggers and RS232 Refer to circuit diagram L922 sheet 5
YUV/RGB Video Mux and OSD insert Refer to circuit diagram L922 sheet 6
SPDIF MUX a nd RXTX Refer to circuit diagram L922 sheet 7
SVIDEO a nd CVBS OSD insert Refer to circuit diagram L922 sheet 8
S-Video Multiplexer Refer to circuit diagram L922 sheet 9
Zone 2 OSD Refer to circuit diagram L922 sheet 10
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AV8 Video PCB Icons + Mech parts
PCB
L922 AV8 Video Circuit
AV8 Video Board TOP
L922 AV8 Video Circuit
AV8 CVBS mux
E870MC
AV8 On Screen Display
1 2
74HC123D MONOSTABLE
AV8 Svideo CVBS OSD Insert
AV8 Zone2 OSD
+
AV8 Power Supply
+
AV8 RGB YUV Video Mux
E869MC
AV8 SVideo Mux
AV8 SPDIF RXTX
T
B
AV8 RC5 Trigger
TOP - B
BOTTOM - A
Page
AV8 Phase Locked Loop Board
Introduction Refer To Block Diagram
Specification
Description Refer to circuit diagram L948 sheet 1
Range
Page
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AV8 Phase Locked Loop
PHASE COMP
VCO
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AV8 Phono Card Upgrade Gen eral Assembly Parts List
ARCAM