Arcam Alpha10DaveModul SERVICE MANUAL

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

Alpha 10 DAVE Module Service Manual

Issue 1 Paul Newton/Richard Martin May 99

CONTENTS

Summary ..................................1

Circuit description ...........................1

Specifications ..............................5

Setup Menu ................................8

Parts List .................................15

Summary

Using the Alpha 10's modular design concept, the DAVE
Module is designed so that you can just plug it into an
existing Alpha 10 integrated amplifier and it will convert
that unit into a Digital Home Cinema System.

the high switch on currents. It should be noted that the two
switching regulators are fairly sensitive and disruption of
the 52kHz switching signal will may cause damage to both
the Alpha 10 and the DAVE Module.

Fan Control Circuit

The fan circuit is controlled by a temperature sensor (Z21),
the output pins of which are normally high. There is
normally a voltage across the fan connected to SK19 but
it is not normally enough to turn the fan motor. When the
temperature rises above 55 deg.C (set by the resistor
network on Z21), the Out1 pin goes LOW and the voltage
across SK19 is increased so that the fan motor will turn
over at a relatively low speed. To make sure the fan starts,
the effect of C58 charging causes there to be
approximately 12V across the fan. Out2 will go low at 65
deg. C and this informs the H8 micro as well as causing
the voltage across the fan, and hence the fan speed, to
increase by switching Q6 on. If the the temperature of the
unit remains at this point for too long a period then the H8
will intervene. It should be noted that this circuit is running
during Standby and Soft Power Down and hence the fan
can operate during these modes.

The DAVE Module consists of a bought in module from
Sample Rate Systems (SRS) in Finland which is capable
of decoding SPDIF information to extract Dolby Digital or
DTS Digital for Surround sound information or Stereo
information. It is also capable of analogue to digital
conversion so that either Sub Woofer information or Dolby
Pro-Logic information can be extracted and outputted.

The rest of the module consists of a PSU, microprocessor,
fan for cooling, audio/video switching and muting, on
screen display generator which is tapped into the video
monitor out lines and digital inputs for both optical and
coaxial digital audio.

Circuit description
Supplies and Start Up

In Standby and Soft Power Down of the Alpha 10 the Micro
Processor, Temperature Sensor and Fan Circuits are
powered up due to the fact that these supplies are derived
from the Standby power supply of the Alpha 10 Integrated
Amplifier.

When the unit is brought out of Standby or Soft Power
Down, the rest of the rails come on except for the positive
and negative 5V rails. The positive 5V rail will not start up
until the ON/OFF pin of the switching regulator (Z25) goes
low. This is at approximately the same time that the Relays
on the out-put of the Alpha 10 Amplifier un-mute. The
negative 5V switching regulator (Z24) will not power up
until the positive 5V rail gets to about 4.2V. These
switching regulators are not powered up until then, due to

Audio and the SRS Digital Audio Surround Processor
Module

The audio types on the DAVE Module comes in two types:­1 Analogue audio can be fed into the module from

the input connectors of the Alpha 10's pre­amplifier. It is routed through a pair of Analogue
Multiplexers (Z1 for Right and Z2 for Left hand
channels), and then on through to the SRS Digital
Surround Module.

2 Digital audio from CD, DVD, Laser Disc or other

SPDIF generating sources can be fed in through
either one of the two coaxial or two optical inputs
and through a Digital Multiplexer (Z3) to the SRS
Digital Surround Module.

The SRS Module performs the following functions :-

• It takes in the analogue audio and converts it into
digital audio and bass signal.

• It takes in SPDIF information and works out what
encoding system if any is being used and decodes
the information into one of the Digital Surround
Modes or Digital Stereo and bass signals.

• If it is in a stereo mode then further processing
can be done on the signal which includes Dolby
Pro-Logic decoding.

• The digital channels are then converted back to

Page 1 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

analogue and the bass is dealt with separately to
the rest of the audio.

• Volume and muting is dealt with after this and then
the bass is added back to the appropriate channels
and the output is buffered before being passed out
of the module.

The Left and Right audio channels are passed back down
to the pre-amplifier of the Alpha 10. The Surround, Centre
and Sub channels are fed through a Muting relay (RLY1)
and on to a set of RCA Phono connectors on the back of
the module. This relay can be controlled by either the H8
Micro or by the PROT1 line which goes High during any
startup or shut down of the Alpha 10 causing a mute.

Video and On Screen Display (OSD) Generation

The Video for the module comes in a number of formats
and standards which the board is capable of dealing with.

Composite Video is where the video information of colour,
luma. and syncs. are combined. The inputs are fed in from
the back of the module via RCA Phono connectors and
through a set of analogue multiplexers. The one is for
output to a VCR (Z11) and the other to a Monitor output
(Z28). The Monitor output is Sync-tip Clamped before
being fed both to the OSD section and another multiplexer
(Z29) which inserts OSD information into the Video
information. Both the VCR output and the Monitor output
are buffered (Z10) before being fed through to their
outputs.
The Sync-tip Clamping consists of a two transistor constant
current source which is used to keep the luma signals a
approximately ground reference although syncs, depending
on content of signal, can drop below. This circuit gives a
reference to which the OSD signal can be applied fairly
accurately.

S-Video is where there are separate lines for the
luma./sync. information and colour information. These are
fed in on 4pin mini DIN connectors and are again fed
through multiplexers to a VCR output (Z8) and Monitor
output (Z27). The luma line is Sync-tip Clamped and the
colour ac coupled before they are fed through another
multiplexer (Z12) to have the OSD information added. In
this case only the luma. (Y) line of the Monitor multiplexer
is fed to the OSD IC. The Monitor and VCR outputs are
buffered (Z13 and Z9 respectively) before being outputted.

Component video is very similar to S-Video except in this
case the colour information line is further split into two
separate colour difference signal lines R-Y and B-Y. As this
input is only used so OSD can be inserted onto the video
being viewed, there is no VCR output and no input
multiplexers, as with the composite and S-video inputs.
The luma line for the component video is dealt with as the
luma in the S-video except its path is through multiplexer

Z12 and buffer Z30.
As the OSD generator (Z18) does not deal directly with R-

Y and B-Y colour difference signals these, levels are
generated by potential dividers on Z6 which will give a
blue signal. These are only used in full page mode if there
is a blue output (pin 16 Z18) but no character output (pin
18 Z18), such as the outline box, but no actual text output
(pin 15 Z18). This is controlled by Z6 (gate1) and Z19
(gate3), inserted onto the R-Y and B-Y signals by Z29 and
buffered by Z30. The rest of Z19 is used to Black Level
Clamp the R-Y and B-Y input signals. This is done,
because these signals are referenced to ground, by Z19
during the line blanking period, the signal for this being
generated from the composite sync signal form Z20.

The OSD section can be split down into several sub
sections:

• the input stage has a multiplexer (Z14) to select
the relevant type of video to sync. onto. This is
then buffered (Z15) before being fed through to
the OSD generator IC and 50/60 Hz recognition
system.

• the sync. separator IC (Z20) outputs a vertical
sync. line to the H8 Micro which is checked to see
if the timings are correct in which case the
relevant clocks are switched, if the video is valid.
This is so if the vertical sync. line is either pulsing
at greater than equal to once per second or it is
permanently high. If the timing between these
pulses is either 16ms or 20ms then either 50Hz or
60Hz video is assumed or the last valid video
standard is used. This IC also generates a
composite sync signal which is used to time the
Sync-tip Clamping of the R-Y and B-Y of the
component video signal.

• the clock circuit has two crystals, the 14M31818Hz
is for NTSC 60Hz and the 17M73447Hz is for PAL
50Hz. Most 50Hz and 60Hz video systems can be
synchronised to but the OSD IC will not output the
correct colour information. These are switched by
Z7 and Z14 from the Micro.

• the OSD IC is controlled by a three wire SPI serial
data bus and is completely software controlled. It
may output spurious information until it is reset
properly by the micro processor. It Guarantees
OSD characters and insertion of both colour and
luma. It is also capable of generating the correct
sync. timings so that it can blank the screen when
either a non-valid input is selected or if a no valid
video information is available.

There are several pins to note on this chip which

may affect performance. LESCREEN (approx.

1.3V) and LECHAR (approx. 1.5V)set the levels

Page 2 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

for the OSD back ground and text during insertion
onto video other wise the levels are set internally.
RES is a reset timing pin for correct operation of
the device after power up and FTR sets the phase
lock loop response.

Micro Processor

The Micro Processor on the DAVE Module is 16Mz Hitachi
H8 series with 60kB of Flash Programable Memory and is
initially supplied un-programmed. The connector (SK18)
can be used to program or reprogram the H8 with the aid
of a purchasable flash programming module (this is
supplied as part of their emulator kit). On initial power up
the HOLTEC micro synchronises the reset of the H8 micro
with the PIC on the display panel by pulling MRES high
causing the output of Z31 to go low and hence the reset pin
(1) of the H8 micro.

The Micro has a number of functions which include:

• communicating with the PIC and HOLTEC micros
on the Alpha 10 Integrated Amplifier via an I2C
bus. As part of this it takes over some of the
functionality of the PIC such as control of the Pre­amplifier, the front panel display information and
error response to the Holtec Micro.

• communicating with the SRS Digital Surround
Module via SPI bus and controlling its decoding
modes, configuration volume and muting.

• communicating with the OSD via a 3 wire SPI bus
and also monitoring the vertical sync. line for
video timings and switching in the appropriate
clock crystal.

pressing RESTORE followed by MENU on the
remote control or by pressing both MODE/ZONE
and CONFIRM together on the front of the Alpha

10. The new pages of the menu are:­Page 6 : a list of the micro processors and their

reported software versions including those on the
SRS Module.
Page 7 : a dump of the fault logs held in the
eeprom of the A10 amplifier. Note : if you need to
erase the values held in the erasable section then
press VCR in this page.

2 A test mode which can be entered by

simultaneously pressing the front panel CD and
CONTROL buttons while switching out of stand­by. Hold the buttons down until “DAVE Self Test”
appears on the display.

This mode puts the unit into full range speakers
mode with no delays. The following table gives a
list of the inputs and outputs selected and what the
unit should do. The tests can be stepped through
by either the use of the UP and DOWN codes or
by entering the test number eg “01" using the
CR9000 remote control handsets number keys
when it is in ARCAM ‘AUDIO’ mode. It should be
noted, that because in this mode 7 and 9 have
the same code, the ENTER button becomes 9.

NB: To exit this test mode you have to unplug the unit

from the mains supply to rest it.

• controlling the audio and video paths including
relay muting functions.

• monitoring for a high temperature condition with
the aid of the temperature sensor IC (Z21). The
temperature sensor will automatically control the
speed of the fan for temperatures of above 55
Deg. C and above 65 Deg. C will also tell the
micro.

• has a number of embedded service and test
modes which are listed below.

There are two embedded modes in the software which are
of use for testing the unit.

1 If the PHONO/AUX and CONTROL buttons are

pressed when the unit is brought out of stand-by
then two extra pages appear in the set-up menu
for the DAVE Module which is accessed by either

Page 3 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

Test No. Input

Video Input Audio Input Unit Function

Source

1 None None None Generate Full Page Blue Screen in PAL 50Hz. Audio to

be Muted.

2 None None None Generate Full Page Blue Screen in NTSC 60Hz. Muted

Audio.

3 DVD Component

Only

None Generate OSD on component video only.

Muted Audio.

4 DVD S-Video Only Optical 1 Generate OSD on S-Video Only.

Audio to Auto Detection on Digital Input

5 AV S-Video

Only

Optical 2 Generate OSD on S-Video Only.

Audio to Auto Detection on Digital input

6 AUX S-Video Only Coaxial 1 Generate OSD on S-Video Only

Audio to Auto Detection on Digital Input

7 VCR S-Video

Only

Coaxial 2 Generate OSD on S-Video Only

Audio to Auto detection on Digital Input
No output on VCR Out

8 DVD Composite

Only

9 AV Composite

Only

10 AUX Composite

Only

11 VCR

(Tape2)

Composite
Only

Analogue Generate OSD on Composite Only

Audio to Analogue Stereo with SUB from SRS

Analogue Generate OSD on Composite Only

Audio to Analogue Stereo with SUB from SRS

Analogue Generate OSD on Composite Only

Audio to Analogue Stereo with SUB from SRS

Analogue Generate OSD on Composite Only

Audio to Analogue Stereo with SUB from SRS
No output on VCR Out

12 CD None Analogue Generate OSD Blue Screen

Audio to Analogue Stereo with SUB from SRS
No output on any VCR Video Out

13 TUNER None Analogue Generate OSD Blue Screen

Audio to Analogue Stereo with SUB from SRS
No output on any VCR Video Out

14 TAPE 1 None Analogue Generate OSD Blue Screen

Audio to Analogue Stereo with SUB from SRS
No output on any VCR Video Out

Page 4 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

Test No. Input

Video Input Audio Input Unit Function

Source

15 DVD Any with 60Hz

Video

16 DVD Any with

50Hz Video

Coaxial 1 Auto Detect for 60Hz Video as Normal

Detect and output Dolby Digital 5.1 Only

Coaxial 1 Auto Detect to 50Hz Video as Normal

Detect and output DTS Surround 5.1 Only

17 DVD Any Coaxial 1 Auto Detect Video as normal operation

Detect and output Dolby Pro Logic encoded Dolby Digital
Only

18 DVD Any Stereo

Analogue

Auto Detect Video as normal
Output Analogue Pro Logic decoded signal

Pro Logic

Specifications

Input Supplies

Main A10 Amplifier Rails :

A10 Positive Unregulated Stand By Supply :

A10 +8V Stand By Supply :

Module Supplies

Micro Processor and
Temperature Sensor
(Can be on in Stand By and Soft Power
Down)

Fan
(Can be on in Stand By and
Soft Power Down)

+ 15V (for SRS Audio and +7V2 supply) :

- 15V (for SRS Audio and +7V2 supply) :

+48V +/-7V (@60mA with No SRS
@180mA Nominal)

-48V +/-7V (@ 10mA with No SRS
@ 30mA Nominal)

13V+/-2V (@20mA Nominal
@ 80mA Max with Fan)

8V +/-1V (@50mA Nominal)

:

:

+5V +/- 0.25V @ 70mA

<3V @ T<55 Deg C
7V +/- 1.0V @ T>=55 Deg C
11V +/- 1.5V @ T>=65 Deg C

+15V +/- 0.5V @ 50mA typ.

-15V +/- 0.5V @ 50mA typ.

Page 5 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

+ 7V2 (for Analogue Audio Switching Only) :

- 7V2 (for Analogue Audio Switching Only) :

+ 5V :

- 5V :

Analogue Audio

Input Level @ Alpha 10 pre-amplifier :

Input Level @ DAVE Module :

Crosstalk at SRS Module Input :

+ 7.2V +/-5% @ 5mA typ.

- 7.2V +/- 5% @ 5mA typ.

+ 5V +/- 0.25V @ 1.2A Max.

-5V +/- 0.25V @ 100mA Max.

Nominally 1Vrms
Maximum greater than 5Vrms for
Multiplexers (Analogue Stereo only)
Maximum greater than 2.9Vrms for SRS A/D
(All other analogue modes)

Nominally 850mVrms
Maximum greater than 2.5Vrms (for SRS
A/D)

Better than -65dB @ 1kHz between any
audio channel

Noise at SRS Module Input :

Distortion at SRS Module Input :

Relative Levels for -20dB reference Stereo
Dolby Pro Logic Signal (Maximum Output,
Large Speakers and Flat Trims) on DVD
player analogue output.

Maximum Output Levels from SRS Module
@ 0.5%Distortion

Frequency Response
All speakers set to large and present

Noise on Output of Module :

Crosstalk at Output of Module :

Less than -95dBV

Less than 0.01% @1kHz

:

Typical Left and Right Levels
400 mVrms (DAVE Module Out)
450 mVrms(10 Pre Out)
Surrounds and Centre
+/- 1 dB (relative to Left Pre Out)

:

>8Vrms for all channels except SUB
>10Vrms for SUB in worst case

:

Left, Right, Surrounds and Centre
20Hz to 20kHz @ +/-0.2dB
Sub
10Hz to 70Hz +0/-3dB

Less than -95dBV except SUB
Less than -85bBV for SUB

Less than 65dB @1kHz between any audio
channel.

Digital Audio

Page 6 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

Input Level @ Coaxial Digital Inputs :

Level @ SRS Module :

Relative Levels for -20dB Dolby Digital 5.1
Signal (Maximum Output, Large Speakers
and Flat Trims)

Video

Nominal Luma Input Level :

S-Video OSD Nominal Colour levels :

Component Nominal Colour Difference
Levels for Blue OSD
relative to Black

Frequency Response :

Greater than 500mVp-p into 75R

Greater than 400mVp-p for any Digital Input

:

Typical Left and Right Levels
650 mVrms (DAVE Module Out)
700 mVrms(10 Pre Out)
Surrounds and Centre
+/- 1 dB (relative to Left Pre Out)
Sub
+10dB +/-1 (relative to Left Pre Out)

1Vrms into 75R
SYNC tip to White Level

450mVp-p into 75R for Blue

:

330mV into 75R for B-Y

-60mV into 75R for R-Y

+0/-1dB to 4.8MHz

Cross Talk :

OSD

Frame Rate :

Crystal Frequency @25degC :

Colour Standards Supported :

Better than -60dB at 1Mz

50 or 60 Hz

14.318180MHz+0/(-80ppm) for 60Hz

17.734470MHz(+0/-30ppm) for 50Hz

PAL 50Hz
NTSC 60Hz
(Most other 50 and 60Hz frame rate
standards supported with B/W OSD)

Page 7 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

Setup Menu

In order to use the DAVE unit you may need to
re-configure the inputs using the setup menu. The basic
instructions for using the setup menu are set out below.
For more details please consult the DAVE owners manual
and the CR9000 remote handset owners manual.

ENTERING THE SETUP MENU
USING THE CR9000 REMOTE CONTROL

N.B. The CR9000 must be in audio mode to control the

unit. Press the AUD button to enter this mode.

Press RESTORE followed within 2 seconds by MENU.

You can also use the front panel controls if preferred.

Hold down the MODE/ZONE button and whilst still
holding it down press the CONFIRM button.

Either method will bring up a menu on the on screen
display (OSD) on the TV or monitor connected to the
MON OUT (Monitor Out) sockets of the Alpha 10 DAVE
module and also on the front panel display of the Alpha
10 integrated amplifier.

The menus have up to seven options per page when displayed
on the TV or monitor. The rectangular boxes below are

representations of the menus that will be displayed on
your TV screen. The selected line of the menu will also be

displayed on the front panel display of the Alpha 10.

EXITING THE SETUP MENU

USING THE CR9000 REMOTE CONTROL

Press the MENU button at any time or highlight Exit + Save
and press the RIGHT < button.

USING THE FRONT PANEL CONTROLS

Either

Press the front panel CONFIRM button at anytime from any
menu.

Or`
Go to the final page of menus and press the CONTROL button

until Exit + Save Off is displayed. Rotate the volume control
so the display shows Exit + Save On.

Both the OSD and front panel display will then show “Settings
Saved” for a couple of seconds to confirm this.

Your unit now has the settings stored in memory as "Favourite
Settings". You can choose to trim the centre and surround
levels to suit a particular movie, then restore the stored
settings at any time by pressing FAVOURITE (RESTORE) on
the remote.

NAVIGATING THE MENUS
USING THE CR9000 REMOTE CONTROL

•

Use
selection on the highlighted line, and to change menus pages
when the menu heading is highlighted.

keys to go up/down the menu, =< keys to alter the

–

USING THE FRONT PANEL CONTROLS

To select a menu highlight it by moving the cursor using the
front panel CONTROL button to step down through the choices
To select a new page highlight the menu title and press
CONTROL. To select a choice rotate the volume control one
click at a time to cycle through the available choices.

Page 8 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

There are a number of test pads marked on the Circuit Diagrams. Their function is described below.

Test Pad Name Function

AUX1L
AUX1R
CDL
CDR
TUNERL
TUNERR
AVL
AVR
AUX2L
AUX2R
TAPE1L

TAPE1R

TAPE2L

Left Auxiliary (or Phono) Input (SK1 to Z2)
Right Auxiliary (or Phono) Input (SK1 to Z1)
Left CD Input (SK1 to Z2)
Right CD Input (SK1 to Z1)
Left Tuner Input (SK1 to Z2)
Right Tuner Input (SK1 to Z1)
Left AV Input (SK1 to Z2)
Right AV Input (SK1 to Z1)
Left DVD (or 2nd Auxiliary) Input (SK1 to Z2)
Right DVD (or 2nd Auxiliary) Input (SK1 to Z1)
Left Tape1 (or Processor) Input (SK1 to Z2)

(this is TAPE2L before issue 1)
Right Tape1 (or Processor) Input (SK1 to Z1)

(This is TAPE2R before issue1)
Left Tape 2 (or VCR) Input (SK1 to Z2)

(This is TAPE1L before issue 1)

TAPE2R

L_ANA
R_ANA
SRSL
SRSR
SRSSL
SRSSR
SRSC
SRSS
LAUD
RAUD
CTR

Right Tape 2 ( or VCR) Input (SK1 to Z1)
(This is TAPE1R before issue 1)

Left Analogue Input to SRS Module
Right Analogue Input to SRS Module
Left Output from SRS Decoder Module
Right Output from SRS Decoder Module
Left Surround Output from SRS Decoder Module
Right Surround Output from SRS Decoder Module
Centre Output from SRS Decoder Module
Sub Output from SRS Decoder Module
Left Analogue Output from SRS Module
Right Analogue Output from SRS Module
Centre Analogue Pre-out with Mute

Page 9 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

Test Pad Name Function

SUB
SURL
SURR
COAX1
COAX2
COAX1A
COAX2A
COAX1B
COAX2B
OPT1
OPT2
OPT1A
OPT2A
DAUD

SUB Woofer Analogue Pre-out with Mute
Rear Left Analogue Pre-out with Mute
Rear Right Analogue Pre-out with Mute
1st Coaxial Digital Input
2nd Coaxial Digital Input
1st Coaxial Digital Input with Load
2nd Coaxial Digital Input with Load
1st Coaxial Digital Input onto Main Board
2nd Coaxial Digital Input onto Main Board
First Optical Digital Input
Second Optical Digital Input
First Optical Digital Input after Load resistors (to check operation of multiplexer)
Second Optical Digital Input after Load resistors (to check operation of multiplexer)
Digital Audio Input to SRS Module

A2, A1 & A0

DAS1 & DAS0

SPI_CLK
SPI_DDE
SPI_MCU
SPI_SEL
SPI_HREQ
MUTE
RESET
AGND
AOUT

Analogue Audio Multiplexer Select Lines
0 0 0 Phono/Aux 0 0 1 CD
0 1 0 Tuner 0 1 1 AV
1 0 0 DVD 1 0 1 VCR
1 1 0 Tape 1 1 1 Mute

Digital Audio Multiplexer Select Lines
0 0 Coaxial 1 0 1 Coaxial 2
1 0 Optical 1 1 1 Optical 2

SPI Bus Clock Line to SRS Decoder Module
SPI Bus Data Line from SRS Decoder Module
SPI Bus Data Line to SRS Decoder Module
SPI Bus Select Line to SRS Decoder Module
SPI Bus Host Request to SRS Decoder Module
Pre-out Mute (LOW for Mute)
Reset Pin for SRS Decoder Module (LOW for Reset)
Ground Reference Point for Audio Input
Ground Reference Point for Audio Output

Page 10 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

Test Pad Name Function

DAGND
SRSAGND
SRSDGND

DVD_I
VCR_I
AV_I
AUX_I
VCR
MON
DVD_Y
DVD_C
VCR_Y
VCR_C

Ground Reference Point for Digital Audio Input
Analogue Ground Reference for SRS Decoder Module
Digital Data Ground Reference for SRS Decoder Module

DVD Composite Video Input
VCR Composite Video Input
AV Composite Video Input
Auxiliary Composite Video Input
VCR Composite Video Output
Composite Video with OSD Monitor Output
DVD S-Video Luma Input
DVD S-Video Chrom Input
VCR S-Video Luma Input
VCR S-Video Chrom Input

AV_Y
AV_C
AUX_Y
AUX_C
YVCR
CVCR
YMON
CMON
V2, V1 & V0

M2, M1 & M0

AV S-Video Luma Input
AV S-Video Chroma Input
Auxiliary S-Video Luma Input
Auxiliary S-Video Chroma Input
VCR S-Video Luma Output
VCR S-Video Chroma Output
S-Video Luma with OSD Monitor Output
S-Video Chroma with OSD Monitor Output
VCR Composite Video Select Lines

0 0 0 DVD 0 0 1 Mute
0 1 0 AV 0 1 1 Aux
1 0 0 Mute 1 0 1 Mute
1 1 0 Mute 1 1 1 Mute

Monitor Composite Video Select Lines
0 0 0 DVD 0 0 1 VCR
0 1 0 AV 0 1 1 Aux
1 0 0 Mute 1 0 1 Mute
1 1 0 Mute 1 1 1 Mute

Page 11 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

Test Pad Name Function

SVS1 & SVS0

SMS1 & SMS0

VGND
SVGND

Y_IN
RY_IN
BY_IN
Y_OUT
RY_OUT
BY_OUT
OSD_Y

VCR S-Video Select Lines
0 0 DVD 0 1 Mute
1 0 AV 1 1 Aux

Monitor S-Video Select Line
0 0 DVD 0 1 VCR
1 0 AV 1 1 Aux

Ground Reference Point for Composite Video In/Out
Ground Reference Point for S-Video In/Out

Component Video Luma Input
Component Video R-Y Colour Difference Signal Input
Component Video B-Y Colour Difference Signal Input
Component Video Luma and OSD Output
Component Video R-Y Chroma and OSD Colour Difference Signal
Component Video B-Y Chroma and OSD Colour Difference Signal
OSD Composite Video or Luma Input

OS1 & OS0

NTSCPAL

CLOCK

VOSD
OSD_INS

O/E
VSYNC

CVGND

OSD Luma Select Lines
0 0 Composite 0 1 S-video
1 0 Component 1 1 Mute

This line is used to select the clock crystals
HIGH for NTSC 60 and other 60Hz video modes
LOW for PAL 50 and other 50Hz video modes

Crystal Oscillator Pin for OSD IC
14M3181Hz for NTSC 60 Hz and other 60 Hz Modes
17M73447Hz for PAL 50Hz and other 50 Hz Modes

Valid Video Detection Pin (Wrong on issue E) N/R
Insertion of OSD on Video Information

High when inserting OSD. This line is permanently High for Full Page Mode
Odd / Even Frame Recognition N/R
Used for Valid Video Recognition

Valid recognised video if one LOW pulse of 250us in 20ms(50Hz) or 16ms(60Hz)
Not valid if not high or no pulses for more than 1second

Ground Reference Point for Component Video

Page 12 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

Test Pad Name Function

P1

P2

P3

P4

P5

P6

REQ1
SDA1
SCK1
TEST

Flash Programming Point 1 (SK18 pin 1)
Port 6/0 on H8 Micro Processor

Flash Programming Point 2 (SK18 pin 2)
FVPP pin of H8 Micro Processor

Flash Programming Point 3 (SK18 pin 3)
MD1 pin of H8 Micro Processor

Flash Programming Point 4 (SK18 pin 4)
RES pin of H8 Micro Processor (Reset on Low

Flash Programming Point 5 (SK20 pin 1)
RXD1 pin of H8 Micro Processor

Flash Programming Point 6 (SK20 pin 2)
TXD1 pin of H8 Micro Processor

Request Line for I2C Serial Data
Data Line for I2C Serial Data
Clock Line for I2C Serial Data
Test Routine Run Pin

HIGH for Normal Operation
LOW to Run the Built In Test Routine

CSN
CLK
DATA
MRES
PROT1

P5M

DGND

FAN

ON_OFF

PSUP

Chip Select Line for OSD’s Modified SPI Serial Data
Clock Line for OSD’s Modified SPI Serial Data
Data Line for OSD’s Modified SPI Serial Data
Used by Holtec to reset H8. High for reset
(No test pad) Pin 10 of SK12. Used for muting and switcher power supply control.

48V +/-7 during power up and down of unit.
2V+/-0.5V during normal running.

Micro Processor Supply 5V+/- 0.25V
(also used for flash programming module)

Digital Ground Reference Point
(also used for flash programming module)

First fan point switching (approx 55EC)
Normally high.

If HIGH the 5V switching supply will be held in an off state.
If LOW the 5V regulator will switch on.

Main Amplifier Positive Supply

Page 13 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

Test Pad Name Function

NSUP
P15V
N15V
PUREG
P8V
P30V

N30V

P15VA
N15VA
P7V2
N7V2
P5VA
P5VVID

Main Amplifier Negative Supply
Main Amplifier Positive 15V Supply (Not used on this design)
Main Amplifier Negative 15V Supply (Not used on this design)
Main Amplifier Unregulated Standby Supply
Main Amplifier Pre-regulated Standby Supply
Supply for Positive 15V Regulator

+27.5V +/-1.5V @ 48V input from Alpha 10 Amp
Supply for Negative 15V Regulator

-27.5V +/-1.5V @ -48V niput from Alpha 10 Amp
Positive 15V Supply for SRS Audio and +7V2 rail.
Negative 15V Supply for SRS Audio and -7V2 rail.
Positive 7V2 Supply for Audio Multiplexers Only.
Negative 7V2 Supply for Audio Multiplexers Only.
Positive 5V Supply for All Parts Except the Micro and Temperature Sensor.
Positive 5V Supply for All Video Switches Buffers and OSD.

P5VDIG
N5VA
N5VVID
N5VSRS
P5VMICRO

FANSUP
GND
PGND
MGND
SRSGND
SRSGND2

Positive 5V Supply for Digital Audio Switches and Optical Receivers.
Negative 5V Supply for All Parts.
Negative 5V Supply for All Video Switches and Buffers.
Negative 5V Supply for SRS analogue stages.
Positive 5V Supply for Temperature Sensor and Micro Processor

This Rail is On in Stand By and Soft Power Down.
Supply Voltage Across Fan
Ground Reference Point for Power Supply
Ground Reference Point for Input to Power Supply
Ground Reference Point for Micro Processor 5V Supply
Ground Reference Point for SRS Digital Power Supply
Ground Reference Point for SRS Analogue Power Supply

Page 14 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

Dave Board Parts List `

Ref No. Description Part No
C1 ELEC 10U 25V CERAFINE 2P610CC
C2 ELEC 10U 25V CERAFINE 2P610CC
C3 ELST 22U 63V 2N622
C4 ELEC 10U 25V CERAFINE 2P610CC
C5 ELST NON POLAR 10UF 35V 2U610
C6 ELST NON POLAR 10UF 35V 2U610
C7 ELST 10U 50V 2N610
C8 ELST 10U 50V 2N610
C9 MLC 10N 50V X7R 10% SM 2C310
C10 MLC 100N 50V X7R 10% SM 2C410
C11 MLC 1N0 50V X7R 10% SM 2C210
C12 MLC 1N0 50V X7R 10% SM 2C210
C13 MLC 47N VP41BY473KB CAP 2B347
C14 MLC 1N0 50V X7R 10% SM 2C210
C15 MLC 1N0 50V X7R 10% SM 2C210

Ref No. Description Part No
C34 MLC 10N 50V X7R 10% SM 2C310
C35 MLC 10N 50V X7R 10% SM 2C310
C36 MLC 10N 50V X7R 10% SM 2C310
C37 MLC 10N 50V X7R 10% SM 2C310
C38 MLC 10P 50V NPO 10% SM 2C010A
C39 MLC 10P 50V NPO 10% SM 2C010A
C40 ELST 22U 63V 2N622
C41 ELST 10U 50V 2N610
C42 ELST 470U 25V RA 2N747
C43 ELST 10U 50V 2N610
C44 MLC 10P 50V NPO 10% SM 2C010A
C45 MLC 10P 50V NPO 10% SM 2C010A
C46 MLC 10P 50V NPO 10% SM 2C010A
C47 MLC 10N 50V X7R 10% SM 2C310

C48 MLC 10N 50V X7R 10% SM 2C310
C16 MLC 10N 50V X7R 10% SM 2C310
C17 MLC 10N 50V X7R 10% SM 2C310
C18 ELST 470U 25V RA 2N747
C19 MLC 10N 50V X7R 10% SM 2C310
C20 MLC 10N 50V X7R 10% SM 2C310
C21 MLC 10P 50V NPO 10% SM 2C010A
C22 MLC 10P 50V NPO 10% SM 2C010A
C23 ELST 100U 25V 2N710
C24 ELST 10U 50V 2N610
C25 MLC 10P 50V NPO 10% SM 2C010A
C26 MLC 10N 50V X7R 10% SM 2C310
C27 MLC 10N 50V X7R 10% SM 2C310
C28 MLC 10N 50V X7R 10% SM 2C310
C29 MLC 10N 50V X7R 10% SM 2C310
C30 MLC 1N0 50V X7R 10% SM 2C210
C31 ELST 10U 50V 2N610

C49 MLC 10N 50V X7R 10% SM 2C310

C50 ELST 10U 50V 2N610

C51 ELST 22U 63V 2N622

C52 ELST 10U 50V 2N610

C53 MLC 10P 50V NPO 10% SM 2C010A

C54 MLC 10N 50V X7R 10% SM 2C310

C55 ELST 10U 50V 2N610

C56 MLC 10N 50V X7R 10% SM 2C310

C57 MLC 10N 50V X7R 10% SM 2C310

C58 ELST 1M0 25V 2N810

C59 ELST 1M0 35V 2N810C

C60 MLC 10N 50V X7R 10% SM 2C310

C61 ELST 10U 50V 2N610

C62 MLC 10N 50V X7R 10% SM 2C310

C63 ELST 1M0 35V 2N810C

C64 MLC 100N 50V X7R 10% SM 2C410
C32 MLC 10N 50V X7R 10% SM 2C310
C33 MLC 10N 50V X7R 10% SM 2C310

C65 MLC 100N 50V X7R 10% SM 2C410

C66 MLC 100N 50V X7R 10% SM 2C410

Page 15 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

Ref No. Description Part No
C67 MLC 100N 50V X7R 10% SM 2C410
C68 MLC 10P 50V NPO 10% SM 2C010A
C69 ELST 10U 50V 2N610
C70 CERD 220P 63V 20% RA 2A122
C71 PEST 22N 63V 10% 2K322
C72 MLC 100N 50V X7R 10% SM 2C410
C73 MLC 100N 50V X7R 10% SM 2C410
C74 MLC 27P 50V NPO 10% SM 2C027A
C75 MLC 33P 100V NPO 5% SM 2C033
C76 MLC 47P 100V NPO 5% SM 2C047
C77 MLC 82P 100V NPO 5% SM 2C082
C78 MLC 10N 50V X7R 10% SM 2C310
C79 MLC 10N 50V X7R 10% SM 2C310
C80 ELST 10U 50V 2N610
C81 MLC 10N 50V X7R 10% SM 2C310

Ref No. Description Part No

C101 MLC 10P 50V NPO 10% SM 2C010A

C102 MLC 10P 50V NPO 10% SM 2C010A

C103 ELST 100U 25V 2N710

C104 ELST 22U 63V 2N622

C105 MLC 47P 100V NPO 5% SM 2C047

C107 ELST 10U 50V 2N610

C108 MLC 100N 50V X7R 10% SM 2C410

C109 MLC 1N0 50V X7R 10% SM 2C210

C111 MLC 82P 100V NPO 5% SM 2C082

C112 ELEC 10U 25V CERAFINE 2P610CC

C113 ELEC 10U 25V CERAFINE 2P610CC

C114 MLC 100N 50V X7R 10% SM 2C410

C115 MLC 100N 50V X7R 10% SM 2C410

C116 MLC 1N0 50V X7R 10% SM 2C210

C117 ELST NON POLAR 10UF 35V 2U610
C82 ELST 10U 50V 2N610
C83 ELST 100U 25V 2N710
C84 ELST 100U 100V 2N710B
C85 MLC 100N 50V X7R 10% SM 2C410
C86 ELST 1M0 25V 2N810
C87 ELST 1M0 25V 2N810
C88 ELST 100U 100V 2N710B
C89 MLC 100N 50V X7R 10% SM 2C410
C90 MLC 18P 50V X7R 10% SM 2C018
C91 MLC 18P 50V X7R 10% SM 2C018
C92 ELST 10U 50V 2N610
C93 ELST 1U0 50V 2N510
C94 ELST 1U0 50V 2N510
C95 MLC 10N 50V X7R 10% SM 2C310
C96 MLC 1N0 50V X7R 10% SM 2C210
C97 MLC 1N0 50V X7R 10% SM 2C210

D1 ZENER 6V8 400MW 3C06804

D2 ZENER 6V8 400MW 3C06804

D3 SSDIODE 1N4148 75V 3A4148

D4 RECTIFIER 1N4003F 1A 200V 3B4003

D5 ZENER 3V9 0W5 SM SOD123 3CW53V9

D6 SCHOTTKY SM 30BQ100 3A100V 3A30BQ

D7 SCHOTTKY SM 30BQ100 3A100V 3A30BQ

D8 DIODE SS SM BAS16W 3AS16W

D9 SSDIODE 1N4148 75V 3A4148

D10 SSDIODE 1N4148 75V 3A4148

D11 SSDIODE 1N4148 75V 3A4148

D12 ZENER 8V2 1W SM PTZ8.2 3CPTZ8V2

D13 ZENER 8V2 1W SM PTZ8.2 3CPTZ8V2

D14 DIODE SS SM BAS16W 3AS16W

D15 ZENER 8V2 1W SM PTZ8.2 3CPTZ8V2

D16 ZENER 8V2 1W SM PTZ8.2 3CPTZ8V2
C98 MLC 10N 50V X7R 10% SM 2C310
C99 MLC 1N0 50V X7R 10% SM 2C210

D17 RECTIFIER 1N4003F 1A 200V 3B4003

HS1 HEATSINK CLIP TO220 13/8.6

Page 16 of 20

DC/W

F006

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

Ref No. Description Part No
HS1 HEATSINK TO220 13 DEGC/W F005
HS2 HEATSINK TO220 CLIP 30 F007
HS3 HEATSINK TO220 CLIP 30 F007
HS4 HEATSINK TO220 CLIP 30 F007
L1 400uH IND PLUS HOLDER L806CL#A
L2 100uH IND PLUS HOLDER L807CL
L3 2UH2 IND SM NL322522T-2R2J 7B822
L4 2UH2 IND SM NL322522T-2R2J 7B822
L5 2UH2 IND SM NL322522T-2R2J 7B822
L6 2UH2 IND SM NL322522T-2R2J 7B822
L7 R622LY 101K 100UH OA91 RAD

IND
Q1 TRANS LF SS N SM BC849B 4A849B
Q2 TRANS LF SS N SM BC849B 4A849B
Q3 TRANS LF SS N SM BC849B 4A849B
Q4 TRANS LF SS N SM BC849B 4A849B
Q5 TRANS LF SS P SM BC859B 4A859B
Q6 TRANS LF SS P SM BC859B 4A859B
Q7 TRANS LF SS N SM BC849B 4A849B
Q8 TRANS LF SS N SM BC849B 4A849B
Q9 TRANS LF SS N SM BC849B 4A849B
Q10 TRANS LF SS N SM BC849B 4A849B
Q11 TRANS LF SS N SM BC849B 4A849B
Q12 TRANS LF SS N SM BC849B 4A849B
Q13 TRANS LF SS N SM BC849B 4A849B
Q14 TRANS LF SS P SM BC859B 4A859B
Q16 TRANS LF SS N SM BC849B 4A849B
Q17 TRANS LF SS N SM BC849B 4A849B
Q19 TRANS LF SS N SM BC849B 4A849B
R1 RES SM W4 2% 56R 1A056
R2 RES SM W4 2% 56R 1A056
R3 RES SM W4 2% 56R 1A056
R4 RES SM W4 2% 56R 1A056
R5 RES SM W4 2% 56R 1A056
R6 RES SM W4 2% 56R 1A056

7D110

Ref No. Description Part No
R7 RES SM W4 2% 100K 1A410
R8 RES SM W4 2% 100K 1A410
R9 RES SM W4 2% 100K 1A410
R10 RES SM W4 2% 100K 1A410
R11 RES SM W4 2% 100K 1A410
R12 RES SM W4 2% 100K 1A410
R13 RES SM W4 2% 1K0 1A210
R14 RES SM W4 2% 1K0 1A210
R15 RES SM W4 2% 470R 1A147
R16 RES SM W4 2% 470R 1A147
R17 RES SM W4 2% 470R 1A147
R18 RES SM W4 2% 470R 1A147
R19 RES SM W4 2% 75R 1A075
R20 RES SM W4 2% 75R 1A075
R21 RES SM W4 2% 56R 1A056
R22 RES SM W4 2% 56R 1A056
R23 RES SM W4 2% 75R 1A075
R24 RES SM W4 2% 75R 1A075
R25 RES SM W4 2% 75R 1A075
R26 RES SM W4 2% 75R 1A075
R27 RES SM W4 2% 75R 1A075
R28 RES SM W4 2% 75R 1A075
R29 RES SM W4 2% 75R 1A075
R30 RES SM W4 2% 75R 1A075
R31 RES SM W4 2% 470R 1A147
R32 RES SM W4 2% 470R 1A147
R33 RES SM W4 2% 470R 1A147
R34 RES SM W4 2% 470R 1A147
R35 RES SM W4 2% 75R 1A075
R36 RES SM W4 2% 75R 1A075
R37 RES SM W4 2% 10K 1A310
R38 RES MF FU W3 1R0 5% NFR25 1G810
R39 RES SM W4 2% 75R 1A075
R40 RES SM W4 2% 75R 1A075

Page 17 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

Ref No. Description Part No
R41 RES SM W4 2% 75R 1A075
R42 RES SM W4 2% 75R 1A075
R43 RES SM W4 2% 75R 1A075
R44 RES SM W4 2% 470R 1A147
R45 RES SM W4 2% 470R 1A147
R46 RES SM W4 2% 470R 1A147
R47 RES SM W4 2% 470R 1A147
R48 RES SM W4 2% 75R 1A075
R49 RES SM W4 2% 75R 1A075
R50 RES MF FU W3 1R0 5% NFR25 1G810
R51 RES MF FU W3 100R 5% NFR25 1G110
R52 RES SM W4 2% 100R 1A110
R53 RES SM W4 2% 100R 1A110
R54 RES MF FU W3 1R0 5% NFR25 1G810
R55 RES SM W4 2% 1K0 1A210

Ref No. Description Part No
R75 RES SM W4 2% 680R 1A168
R76 RES SM W4 2% 16K 1A316
R77 RES SM W4 2% 10K 1A310
R78 RES MF FU W3 1R0 5% NFR25 1G810
R79 RES MF FU W3 1R0 5% NFR25 1G810
R80 RES SM W4 2% 4K7 1A247
R81 RES SM W4 2% 100R 1A110
R82 RES SM W4 2% 470R 1A147
R83 RES SM W4 2% 470R 1A147
R84 RES SM W4 2% 470R 1A147
R85 RES SM W4 2% 75R 1A075
R86 RES SM W4 2% 180R 1A118
R87 RES SM W4 2% 180R 1A118
R88 RES SM W4 2% 470R 1A147

R89 RES SM W4 2% 470R 1A147
R56 RES SM W4 2% 1K0 1A210
R57 RES SM W4 2% 4K7 1A247
R58 RES SM W4 2% 10K 1A310
R59 RES SM W4 2% 4K7 1A247
R60 RES SM W4 2% 2K2 1A222
R61 RES SM W4 2% 1K0 1A210
R62 RES SM W4 2% 2K2 1A222
R63 RES SM W4 2% 4K7 1A247
R64 RES SM W4 2% 4K7 1A247
R65 RES SM W4 2% 680K 1A468
R66 RES SM W4 2% 22K 1A322
R67 RES SM W4 2% 10K 1A310
R68 RES SM W4 1% 10K 1A310B
R69 RES SM W4 2% 470R 1A147
R70 RES SM W4 2% 10K 1A310
R71 RES SM W4 2% 10K 1A310

R90 RES SM W4 2% 470R 1A147

R91 RES SM W4 2% 470R 1A147

R92 RES SM W4 2% 75R 1A075

R93 RES SM W4 2% 75R 1A075

R94 RES SM W4 2% 75R 1A075

R95 RES MF W4 47R 1% 1H047

R96 RES SM W4 2% 22K 1A322

R97 RES SM W4 2% 22K 1A322

R98 RES SM W4 2% 470R 1A147

R99 RES SM W4 2% 470R 1A147

R100 RES SM W4 2% 470R 1A147

R101 RES SM W4 2% 75R 1A075

R102 RES SM W4 2% 75R 1A075

R103 RES SM W4 2% 75R 1A075

R104 RES SM W4 2% 10K 1A310

R105 RES SM W4 2% 10K 1A310
R72 RES SM W4 2% 22K 1A322
R73 RES SM W4 2% 22K 1A322
R74 RES SM W4 2% 10K 1A310

R106 RES SM W4 2% 10K 1A310

R107 RES SM W4 2% 4K7 1A247

R108 RES SM W4 2% 10K 1A310

Page 18 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

Ref No. Description Part No
R109 RES SM W4 2% 4K7 1A247
R110 RES SM W4 2% 10K 1A310
R111 RES SM W4 2% 10K 1A310
R112 RES SM W4 2% 10K 1A310
R113 RES SM W4 2% 220K 1A422
R114 RES SM W4 2% 220K 1A422
R115 RES SM W4 2% 100K 1A410
R116 RES SM W4 2% 10K 1A310
R117 RES SM W4 2% 4K7 1A247
R118 RES SM W4 2% 10K 1A310
R119 RES SM W4 2% 10K 1A310
R120 RES SM W4 2% 4K7 1A247
R121 RES SM W4 1% 10K 1A310B
R122 RES MF FU W3 1R0 5% NFR25 1G810
R123 RES SM W4 2% 100K 1A410

Ref No. Description Part No

R145 RES SM W4 2% 100K 1A410

R146 RES SM W4 2% 0R0 1A000

R147 RES SM W4 2% 47K 1A347

R148 RES MF FU W3 100R 5% NFR25 1G110

R149 RES MF FU W3 100R 5% NFR25 1G110

R150 RES SM W4 2% 4K7 1A247

R151 RES SM W4 2% 75R 1A075

R153 RES SM W4 2% 100K 1A410

R155 RES SM W4 1% 10K 1A310B

R156 RES MF FU W3 1R0 5% NFR25 1G810

R157 RES SM W4 2% 56R 1A056

R158 RES SM W4 2% 100K 1A410

R159 RES SM W4 2% 4K7 1A247

R160 RES SM W4 2% 4K7 1A247

R161 RES SM W4 2% 33K 1A333
R125 RES SM W8 1K5 1% 1A215A
R126 RES SM W4 2% 75R 1A075
R127 RES SM W4 2% 100K 1A410
R128 RES SM W4 2% 4K7 1A247
R129 RES MF FU W3 1R0 5% NFR25 1G810
R131 RES MF FU W3 10R 5% NFR25 1G010
R132 RES SM W4 2% 100R 1A110
R133 RES SM W4 2% 100R 1A110
R134 RES SM W4 2% 4K7 1A247
R135 RES SM W4 2% 10K 1A310
R136 RES SM W4 2% 4K7 1A247

R137 RES MF FU W3 100R 5% NFR25 1G110
R138 RES SM W4 2% 470R 1A147
R139 RES SM W4 2% 470R 1A147
R140 RES SM W4 1% 10K 1A310B
R141 RES MF W4 47R 1% 1H047
R142 RES SM W4 2% 100K 1A410
R143 RES SM W4 2% 100K 1A410
R144 RES SM W4 2% 100K 1A410

R162 RES MF FU W3 100R 5% NFR25 1G110

R163 RES SM W4 2% 330R 1A133

R164 RES SM W4 2% 4K7 1A247

R165 RES MF FU W3 100R 5% NFR25 1G110

R166 RES MF FU W3 100R 5% NFR25 1G110

R167 RES MF FU W3 100R 5% NFR25 1G110

R168 RES MF W4 22R 1% 1H022

R169 RES CF W4 5% 2R2 1B822

R170 RES SM W4 2% 22K 1A322

RLY1 RELAY MAINS 4PCO 5V 83R A214#A

SK1 32-WAY FFC CONN VERT 8K8032

SK2 10+10 WAY FEMALE VERT SKT 8K8020D

SK3 10+10 WAY FEMALE VERT SKT 8K8020D

SK4 PHONO SKT 2-WAY HOR EMC

GOLD
SK5 PHONO SKT 4-WAY EMC GOLD 8D225
SK6A 5 WAY SIL FEMALE VERT PLUG 8K2051
SK7 SVHS 4 CONTACT 2WAY

VERTICAL
SK8 SVHS 4 CONTACT 2WAY

VERTICAL

8D230

8D227

8D227

Page 19 of 20

ALPHA 10 DAVE MODULE SERVICE MANUALALPHA 10 DAVE MODULE SERVICE MANUAL Issue 1 May 99

Ref No. Description Part No
SK9 SVHS 4 CONTACT 2WAY

VERTICAL
SK10 PHONO SKT 4-WAY EMC GOLD 8D225
SK11 PHONO SKT 4-WAY EMC GOLD 8D225
SK12 22-WAY FFC CONN HORIZ 8K8122
SK13 CAGE CLAMP 16A 1 WAY 8Q003
SK14 10+10 WAY FEMALE VERT SKT 8K8020D
SK15 PHONO SKT 4-WAY EMC GOLD 8D225
SK16 CAGE CLAMP 16A 1 WAY 8Q003
SK17A 5 WAY SIL FEMALE VERT PLUG 8K2051
SK18 5-WAY FR LOCK CONN VERT 8K6605
SK19 2-WAY FR LOCK CONN VERT 8K6602
SK20 4-WAY FR LOCK CONN 8K6604
SK21 JST 6 WAY HEADER 8K709
X1 CRYSTAL 16.MHz PARALLEL 7X021
X2 CRYSTAL 14.31818MHz

PARALLEL
X3 CRYSTAL 17.73447MHz

PARALLEL

8D227

7X020

7X022

Ref No. Description Part No
Z8 IC HCMOS 74LV4052 SM 5K4052
Z9 IC AUDIO DUAL EL2244 5B2244
Z10 IC AUDIO DUAL EL2244 5B2244
Z11 IC HCMOS SM MAX 4051 5K4051M
Z12 IC HCMOS 74LV4053 SM 5K4053
Z13 IC AUDIO DUAL EL2244 5B2244
Z14 IC HCMOS 74LV4052 SM 5K4052
Z15 IC AUDIO DUAL EL2244 5B2244
Z16 IC VREG POS 7815 5D7815
Z17 IC AHC SN74AHC1G00 5KA100
Z18 STV5730A 5V5730
Z19 IC HCMOS 74LV4053 SM 5K4053
Z20 VIDEO SYNC SEPARATOR

LM1881
Z21 IC THERMOSTAT SM LM56CIM 5M56
Z22 IC VREG POS 7805 5D7805
Z23 IC VREG NEG 7915 5D7915
Z24 SIMPLE SWITCHER LM2576HV-5 5D2576A

5V1881

Z1 IC HCMOS SM MAX 4051 5K4051M
Z2 IC HCMOS SM MAX 4051 5K4051M
Z3 IC HCMOS 74LV4052 SM 5K4052
Z4 IC THERMOSTAT SM LM56CIM 5M56
Z5 IC THERMOSTAT SM LM56CIM 5M56
Z6 IC HCMOS 74LV4053 SM 5K4053
Z7 IC AHC SN74AHC1G00 5KA100

Z25 SIMPLE SWITCHER LM2576HV-5 5D2576A
Z26 H8/3337MCU60kB16MHz 5H3337
Z27 IC HCMOS 74LV4052 SM 5K4052
Z28 IC HCMOS SM MAX 4051 5K4051M
Z29 IC HCMOS 74LV4053 SM 5K4053
Z30 IC AUDIO DUAL EL2244 5B2244
Z31 IC AHC SN74AHC1G00 5KA100

Page 20 of 20

87654321

DD3

A2 Vertical

Paper Marker

DD_A2V

DD1

D

OSD
L839C4_1.SCH

AUDIO
L839C2_1.SCH

SPI_CLK
SPI_DDE
SPI_MCU
SPI_SEL
SPI_HREQ
SRSRES
MUTE
DAS[0..1]

VIDEO

C

L839C3_1.SCH

M[0..2]
V[0..2]

SVS[0..1] CVBS
SMS[0..1]

PROT1

A[0..2]

COMPY

OSDC

OSDY

OSD_INS

COMPY1

CVBS1

Y

OS[0..1]
CSN
CLK
DATA

COMPY
OSDC
OSDY
OSD_INS
COMPY1

Y
CVBS

CVBS1
NTSC/PAL

VOSD

O/E
VSYNC

PSU
L839C6_1.SCH

OL

FOR CENTRE OF FAN HOLE

A2 Horizontal

Paper Marker

DD_A2H

PD1
TOOLING

PD3
TOOLING_OPT

PD5
TOOLING

PD15
TOOLING_OPT

PD17
TOOLING

PD7
TARGET

PD8
TARGET

DD4

DRILL_DWG

PD2
TOOLING

PD4
TOOLING_OPT

PD6
TOOLING

PD16
TOOLING_OPT

Drilling

Detail

PS

Photo Strip

PHOTO_STRIP

EL1

BARCODE LABEL
BARCODE_A10DAV
UDB

Update Box_2

UPDATE_BOX_2

PCB

PCB

L839PB

F1

FIDUCIALF2FIDUCIAL
F3

FIDUCIALF4FIDUCIAL

F5

FIDUCIAL
F6

FIDUCIAL

DD2

Drilling Detail

Issue Box

DD_ISSUESML

WAF

WAF

WAF

DD5

PCB MATERIAL

FR4, 2 OZ Cu

FR4_2OZ

PB

Photo Block

PHOTO_BLOCK

D

C

PROT1

PD9
TOOLING4.1

MICRO
L839C5_1.SCH

SMS[0..1]
SVS[0..1]
MUTE
DAS[0..1]

B

A

M[0..2]
V[0..2]
SRSRES
SPI_CLK
SPI_DDE
SPI_MCU
SPI_SEL
SPI_HREQ

A[0..2]

OS[0..2]

CSN

CLK

DATA

NTSC/PAL

VOSD

O/E

VSYNC

OL

PROT1

DRAWING TITLE

A10 DAV PROJECT SHEET

PD11
TOOLING4.1

PD10
TOOLING4.1

PD12
TOOLING4.1

PD13
TOOLING

B

A

USE EXCLUDE NF ON ROS PROGRAM

1 2 3 4 5 6 7 8

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

Notes:

Circuit Diagram

Filename

J:\PROJECTS\A10_AC3\pcb\wip\Issue_1\L839c1_1.prj

98_1073 1LJW INITIAL RELEASE

ECO No. DESCRIPTION OF CHANGE

Date Printed

INITIALS

25-Nov-1998

23-11-98

DATE

Drawn by:

WAF

1 6Sheet of

DRAWING NO.

ISSUE

L839C1_1

87654321

RLY1A

RAUD

+

GNDA

ECO No. DESCRIPTION OF CHANGE

Date Printed

R10
100K SM

GNDA

D4

1N4003F

R150
4K7 SM

INITIALS

+

+5VDIG

GNDD

GNDA GNDA

12
34
56
78
910
1112
1314
1516
1718
1920

R111

R_ANA

GNDA GNDA

DAUD

SPI_CLK
SPI_DDE

SPI_MCU
SPI_SEL
SPI_HREQ

R115
100K SM

Circuit Diagram

D

SK2

SK1

C

FROM SK8 ON PRE-AMP PCB

FFC32V

B

+5VDIG

R131

10R FU

A

C10

100N SM

GNDD

1 2 3 4 5 6 7 8

32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

C11
1N0 SM

AUX1L
AUX1R
CDL
CDR
TUNERL
TUNERR
AVL
AVR
AUX2L
AUX2R
TAPE2L
TAPE2R
TAPE1L
TAPE1R

GNDA

SK4

PHONO2HG

COAX 1

EMC

COAX 2

GNDD

AUX1L
AUX1R
CDL
CDR
TUNERL
TUNERR
AVL
AVR
AUX2L
AUX2R
TAPE2L
TAPE2R
TAPE1L
TAPE1R

AGND

COAX1

3

VCC

2

4

3

VCC

2

4

R19

75R SM

1

R20
75R SM

Z5

SPDIF_OPT1

OPT1

O/P

CHASGND

OPT2

5

6

Z4

SPDIF_OPT1

O/P

CHASGND

5

6

DIGITAL IN SNAP OFF PCB

R132
100R SM

COAX1A

R16

470R SM

COAX2A

R133

100R SM

R15
470R SM

R17
470R SM

GNDD GNDD

C25

10P SM

C53

10P SM

COAX2

1

1

Z1

13

X0

14

X1

15

X2

12

X3

1

X4

5

X5

2

X6

4

X7

6

INH

A0

GNDA

A1
A2 A2

SK17B

SIL5 VPLG
5

4
3
2
1

R18
470R SM

11

A0

A1

A2

GNDA

5
4
3
2
1

SK6B

SIL5 VPLG

A

10

B

9

C

8

GND

7

VEE

MAX4051 SM

-7V2 -7V2

SK6A

SIL5 VPLG

5
4
3
2
1

SIL5 VPLG

OPT1A

OPT2A

74LV4052 SM

+7V2 +7V2

16

VDD

3

X

C14
1N0 SM

GNDA GNDA

C15
1N0 SM

-7V2

A[0..2]

COAX1B

5
4
3
2
1

COAX2B

GNDD

GND

8

GNDD

DAGND

GNDD

+5VDIG

16

VDD

SK17A

Z3B

DAS1

DAS0

C9

10N SM

AUX1L
CDL
TUNERL
AVL
AUX2L
TAPE2L

TAPE1L

GNDA

DAS1
DAS0

DAS[0..1]

13
14
15
12

1
5
2
4

6

11

A0

10

A1

9
8

7

12
14
15
11

1
5
2
4

6
9

10

Z2

X0
X1
X2
X3
X4
X5
X6
X7

INH
A
B
C

GND
VEE

MAX4051 SM

A[0..2]

Z3A

74LV4052 SM

1Y0
1Y1
1Y2
1Y3

2Y0
2Y1
2Y2
2Y3

INH
S1
S0

VEE

DAS[0..1]

TO MICRO CCT

VDD

1Z

2Z

X

GNDD

16
3

13

3

7

SRSRES

DRAWING TITLE

A10 DAV AUDIO

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

DIL20 VSKT

GNDA

R_ANALOGUE

L_ANALOGUE

R113

220K SM

D_AUDIO

SPI_CLK

SPI_DDE
SPI_MCU

SPI_SEL

SPI_HREQ

0R0 SM

Notes:

Filename

J:\PROJECTS\A10_AC3\pcb\wip\Issue_1\L839C2_1.SCH

10K SM

L_ANA

RESET

R146

SRSL

SRSR

GNDA

SRSSSRSAGND

R112
10K SM

R114
220K SM

SPI_MCU

SRSDGND

C110
10U EL

GNDD

R127
100K SM

SRSSL

R4

SRSSR

56R SM

R5

SRSC

56R SM

R6
56R SM

R7

100K SM

GNDA

SPI_CLK

SPI_DDE
SPI_SEL

SPI_HREQ

RESET

+

SPI_CLK1

SK3
1 2
3 4
5 6
7 8
9 10

11 12
13 14
15 16
17 18
19 20

DIL20 VSKT

GNDD GNDD

R130

1K0 SM

R2
56R SM

R3
56R SM

GNDA

+5VDIG

C112

10U CERAFINE

R1
56R SM

R8
100K SM

R9
100K SM

GNDA

LAUD
C106
22U EL+C100

22U EL

R144
100K SM

+

C3

R128

4K7 SM

R145
100K SM

R142
100K SM

R143
100K SM

MUTE

C113

10U CERAFINE

C1

+

10U CERAFINE

C2

+

10U CERAFINE

+

22U EL

+

C4

10U CERAFINE

R11
100K SM

R12
100K SM

GNDA

RLY1E
RLY 4PCO 5V 83R

MUTE

Q19

BC849B

23-11-9898_1073 LJW INITIAL RELEASE 1

DATE

R80
4K7 SM

GNDD

Drawn by:

WAF25-Nov-1998

RLY 4PCO 5V 83R

RLY1B
RLY 4PCO 5V 83R

RLY1C
RLY 4PCO 5V 83R

RLY1D
RLY 4PCO 5V 83R

Q14
BC859B

R170
22K SM

2 6Sheet of

GNDA

GNDA

MUTE

DRAWING NO.

SURL

1

AOGND

GNDA

SURR

CTR

GNDA

SUB

D17

1N4003F

SK5A

PHONO4G

SURRL

F

EMC

N

SURRR

SK6

1

Green

CAGECLAMP1

SK5B

F

N

PHONO4G

PROT1

L839C2_1

C12

1N0 SM

GNDA

CENTRE

SUB

ISSUE

D

C

B

A

87654321

SK10B

DVD IN

DVD IN

B1

SK7B
SVHS2V

B3

F

B2

VCR IN

A1

N

A2

AV IN

B1

F

B2

AUX IN

A1

N

A2

Y
C

SK7A
SVHS2V

Y
C

SK8B

SVHS2V

Y
C

SK8A
SVHS2V

Y
C

B4

R23

75R SM

A3
A4

R25

75R SM

B3
B4

R27

75R SM

A3
A4

R29

75R SM

75R SM

VCR_Y

VCR_C

B5
B6

D

1
A5
A6

C96

1N0 SM

B5
B6

C

1
A5
A6

C97

1N0 SM

B

A

R24

DVD_Y

VCR_Y
VCR_C

R26
75R SM

SVGND

AV_Y
AV_C

R28
75R SM

AUX_Y
AUX_C

R30
75R SM

DVD_C

SMS[0..1]
TO MICRO CCT

SMS1

SMS0

SMS[0..1]

SMS1
SMS0

12
14
15
11

1
5
2
4

6
9

10

DVD_Y
AV_Y

AUX_Y

DVD_C
AV_C

AUX_C

SVS1

SVS0

SVS[0..1]

SVS[0..1]

TO MICRO CCT

Z27A

1Y0
1Y1
1Y2
1Y3

2Y0
2Y1
2Y2
2Y3

INH
S1
S0

VEE

74LV4052 SM

+5VVID

GND

Z27B

74LV4052 SM

8

1Z

2Z

16

SVS1
SVS0

VDD

-5VVID

12
14
15
11

1
5
2
4

6
9

10

13

3

7

C19

10N SM

Z8A

1Y0

1Z
1Y1
1Y2
1Y3

2Y0

2Z
2Y1
2Y2
2Y3

INH
S1
S0

VEE

74LV4052 SM

+5VVID

Z8B

GND

74LV4052 SM

8

-5VVID

16

VDD

C36

10N SM

C40

+

22U EL

C37

10N SM

+

EL2244 SM

C41
10U EL

13

10N SM

3

7

C27
10N SM

+5VVID

84

Z9C

-5VVID

C23

+

100U EL

C16

R104

10K SM

470R SM
C24
10U EL

+

C17

10N SM

R105

10K SM

3
2

R31

R34

470R SM

Z9A

EL2244 SM

R32
470R SM

C21

10P SM

Z9B

5
6

EL2244 SM

R33
470R SM

C22

10P SM

M[0..2]

TO MICRO CCT

R35

75R SM

1

7

M[0..2]

YVCR

CVCR

R36
75R SM

M0
M1
M2

A3
A4

M0
M1
M2

DRAWING TITLE

A10 DAV VIDEO

Y
C

13
14
15
12

1
5
2
4

6
11
10

9

8

7

-5VVID

VCR OUT

A1

SK9A

SVHS2V

N

C99
1N0 SM

A2

C30
1N0 SM

Z28

X0
X1
X2
X3
X4
X5
X6
X7

INH
A
B
C

GND
VEE

MAX4051 SM

1

A5
A6

AV IN

AUX IN

VDD

VCR IN

PHONO4G

SK10A

EMC

PHONO4G

+5VVID

X

F

N

16
3

F

N

R107
4K7 SM

+5VVID

1

C98
10N SM

C104

+

22U EL

R108
10K SM

DVD_I

VIDIN

VCR_I

AV_I

AUX_I

Q3

BC849B

CVBS

+5VVID

Q8

BC849B

R110
10K SM

R109
4K7 SM

Q9

BC849B

R39

75R SM

R40

75R SM

R41

75R SM

R42

75R SM

Q7

BC849B

CVBS

R106
10K SM

V[0..2]

TO MICRO CCT

V0
V1
V2

V[0..2]

DVD
AVIN

AUX

C28

10N SM

V0
V1
V2

-5VVID

Y

13
14
15
12

1
5
2
4

6
11
10

9

8

7

Z11

X0
X1
X2
X3
X4
X5
X6
X7

INH
A
B
C

GND
VEE

MAX4051 SM

COMPY

OSDY

OSDC

OSD_INS

+5VVID

C32

10N SM

C33

10N SM

-5VVID

VDD

Y

X

12
13

2
1
5

C

3

11
10

9

+5VVID

16
3

C29

10N SM

Z12A

1Y0
1Y1
2Y0
2Y1
3Y0
3Y1
1S

2S
3S

74LV4053 SM

16

Z12B

74LV4053 SM

VEE

VDD

GND

8

C103

100U EL

10K SM

1Z

2Z

3Z

INH

C95

10N SM

+

R119

7

R45

470R SM

14

COMPY1

15

4

6

5
6

10N SM

3
2

R83
470R SM

+5VVID

84

-5VVID

3
2

R44
470R SM

EL2244 SM

+5VVID

C34

-5VVID

Z10A

EL2244 SM

R82
470R SM

10P SM

Z10C

EL2244 SM

Z10B

EL2244 SM

5
6

R88
470R SM

Z13A

EL2244 SM

R46
470R SM

C39
10P SM

Z13B

R47
470R SM

C38
10P SM

EL2244 SM

C35
10N SM

1

C101

R84
470R SM

C102
10P SM

1

7

84

Z13C

R43
75R SM

CVBS1

7

R48

75R SM

R49
75R SM

MON

R85
75R SM

YMON

B3
B4

SK11A

PHONO4G

VCR

1

MON OUT

SVHS2V

CMON

VCR OUT

N

EMC

F

C109

1N0 SM

VGND

MON OUT

B1

SK9B

Y

F

C

B2

D

C

B5
B6

B

A

Notes:

Circuit Diagram

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

1 2 3 4 5 6 7 8

Filename

J:\PROJECTS\A10_AC3\pcb\wip\Issue_1\L839C3_1.SCH

ECO No. DESCRIPTION OF CHANGE

Date Printed

INITIALS

23-11-9898_1073 LJW INITIAL RELEASE 1

DATE

Drawn by:

WAF25-Nov-1998

3 6Sheet of

DRAWING NO.

ISSUE

L839C3_1

SK18
IDC5S

87654321

+5VMICRO

P1

+5VMICRO

C89

100N SM

+ C93

1U0 EL

R129
1R0 FU

20

41

D

4
3
2
1

OS0
OS1
CSN
CLK
DATA

50/60

VOSD

P5

4K7 SM

DAS[0..1]
A[0..2]
V[0..2]
M[0..2]
SVS[0..1]
SMS[0..1]

SPI_CLK
SPI_DDE
SPI_MCU
SPI_HREQ
SPI_SEL

P6

TEST

R164

GNDD

GNDD

21

P60/KEYIN0/FTCI

22

P61/KEYIN1/FTOA

23

P62/KEYIN2/FTIA

24

P63/KEYIN3/FTIB

25

P64/KEYIN4/FTIC

26

P65/KEYIN5/FTID

27

P66/FTOB/KEYIN6/IRQ6

28

P67/KEYIN7/IRQ7

29

AVCC

30

P70/AN0

31

P71/AN1

32

P72/AN2

33

P73/AN3

34

P74/AN4

35

P75/AN5

36

P76/AN6/DA0

37

P77/AN7/DA1

38

AVSS

39

P40/TMCI0

40

P41/TMO0

SPI_CLK

SRS

SPI_DDE

SRS

SPI_MCU

SRS

SPI_HREQ

SRS

SPI_SEL

SRS

SK20

C

B

OSD

OSD
OSD
OSD

OSD
OSD
OSD

VSYNC

OS[0..2]

CSN

CLK

DATA
50/60

NTSC/PAL

VOSD

O/E

AUDIO
AUDIO
VIDEO
VIDEO

VIDEO
VIDEO
VIDEO
VIDEO

IDC4S

OS[0..1]

CSN

CLK

DATA

NTSC/PAL

DAS[0..1]

A[0..2]

V[0..2]
M[0..2]
SVS[0..1]

SMS[0..1]

MUTE

OL

R54
1R0 FU

C20

10N SM

16

17

18

19

P93/RD

P94/WR

P92/IRQ0

P91/IRQ1/EIOW

P90/ADTRG/IRQ2/ECS2

H8/3337

P42/TMRI0

P43/TMCI1/HIRQ11

P44/TMO1/HIRQ1

P45/TMRI1/HIRQ12

P46/PW045P47/PW146VCC47P27/A1548P26/A1449P25/A1350P24/A1251P23/A1152P22/A1053P21/A954P20/A855VSS56P17/A757P16/A658P15/A559P14/A4

42

43

44

+ C92

10U EL

14

15

P95/AS

Z26

13

P96/0

R118
10K SM

P5M

8

9

10

11

12

VSS

VCC

P52/SCK0

P50/TXD0

P51/RXD0

P97/WAIT/SDA

A2

A1

A0

DAS0

DAS1

D11
1N4148

6

7

NMI
P86/IRQ5/SCK1/SCL

P85/CS2/IRQ4/RXD1

STBY/FVPP

P84/IOW/IRQ3/TXD1

GNDD

V1

V0

5

4

MD0

3

MD1

M0V2M1

12345

P3

P2

GNDD
C91
18P SM

X1

16MHZ#A

1

2

RES

XTAL

EXTAL

P83/IOR

P82/CS1

P81/GA20

P80/HA0

VSS

P37/HDB7/D7
P36/HDB6/D6
P35/HDB5/D5
P34/HDB4/D4
P33/HDB3/D3
P32/HDB2/D2
P31/HDB1/D1
P30/HDB0/D0

P10/A0
P11/A1
P12/A2
P13/A3

60

M2

GNDD

P4

R37
10K SM

D3
1N4148

C79

10N SM

SRSRES

R121
10K SM

C90
18P SM

80
79
78
77
76
75
74

DGND

73
72
71
70
69
68
67
66
65
64
63
62

SVS0

61

SVS1

GNDD

OL
MUTE

SMS0
SMS1

GNDD

GNDD

R120
4K7 SM

+

C13

10U EL

+ C94

1U0 EL

R155
10K SM

D14

BAS16W SM

R52
100R SM

R53
100R SM

4

R81
100R SM

SCK1

Z31

1
2

74AHC1G00 SM

3 5

GNDD

PROT1 +8V

PROT1

MRES

REQ1

REQ1
SDA1

SDA1

SCK1

SK12

FFC22H

R153
100K SM

+PRE

22
21

R154

20
19

0R0 SM

18
17
16

FAULT1

15

REM1_1

14

REM0_1
13
12

SP2

11

SP1
10
9
8
7

THERMX1

6

SP3_PWR

5

VFAULT

4

STBYLED1
3
2
1

GNDD

-PRE

+UREG

D

C

B

FROM

MAIN AMP

A

DRAWING TITLE

A10 DAV MICRO

A

Circuit Diagram

Notes:

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

1 2 3 4 5 6 7 8

Filename

J:\PROJECTS\A10_AC3\pcb\wip\Issue_1\L839C5_1.SCH

ECO No. DESCRIPTION OF CHANGE

Date Printed

INITIALS

23-11-9898_1073

LJW INITIAL RELEASE 1

DATE

Drawn by:

WAF25-Nov-1998

4 6Sheet of

DRAWING NO.

L839C5_1

ISSUE

87654321

+5VVID

+5VVID

5
6

R100

R99

EL2244 SM

16

VDD

GND

8

R98

470R SM

R91
470R SM

470R SM

3
2

84

Z30C

CS_OP

Z29B
74LV4053 SM

VEE

-5VVID

COMPY1

COMPY

Z30B
EL2244 SM

C46
10P SM

Z15A

EL2244 SM

COMPYR

EL2244 SM

7

3
2

R94

7

75R SM

R103
75R SM

R90
470R SM

C45
10P SM

84

Z15C

Z30A

EL2244 SM

R89
470R SM

C44

10P SM

BY_OUT

BY_IN

COMPYB

1

+5VVID

-5VVID

PHONO4G

1

CVGND

Green

R93
75R SM

R102
75R SM

RY_IN

C56
10N SM

C57
10N SM

R92

1

75R SM
R101

75R SM

SK15A

F

EMC

N

B-Y IN

R168

22R MF

SK16

CAGECLAMP1

SK11B

PHONO4G

RY_OUT

Y_OUT

Y_IN

B-Y-OUT

1

R-Y OUT

F

N

R-Y IN

SK15B

PHONO4G

Y OUT

F

N

Y IN

CVBS

Y

C117
10U NP

OS1

OS[0..1]

14

15

4

6

12
14
15
11

1

CVBS

5

Y

2
4

6
9

OS1

10

OS0

OS0

OS[0..1]

TO MICRO CCT

Z6A

1Y0

1Z

1Y1
2Y0

2Z

2Y1
3Y0

3Z

3Y1

1S

INH

2S
3S

74LV4053 SM

Z14A

1Y0

1Z
1Y1
1Y2
1Y3

2Y0

2Z
2Y1
2Y2
2Y3

INH
S1
S0

VEE

74LV4052 SM

12
13
2
1
5
3
11

10
9

13

3

7

-5VVID

+5VVID

GND

74LV4052 SM

8

5
6

EL2244 SM

R55

R56
1K0 SM

D

OSDB_Y

OSDR_Y

OSD_INS

C

COMPY

+5VVID

16

Z19B

7

VEE

VDD

GND

-5VVID

74LV4053 SM

8

B

Z19A

12

1Y0

13

1Y1

2

2Y0

1

2Y1

5

3Y0

3

3Y1

11

1S

10

2S

9

3S

74LV4053 SM

12
13

2
1
5
3

11
10

9

+5VVID

4K7 SM

1Z

2Z

3Z

INH

Z29A

1Y0
1Y1
2Y0
2Y1
3Y0
3Y1
1S

2S
3S

74LV4053 SM

R117

Q16

BC849B

BC849B

C48

10N SM

R116

10K SM

C47

10N SM

14

15

4

6

1Z

2Z

3Z

INH

Q17

C51

+

22U EL

+

10N SM

C50
10U EL

C49

14

CVBS1

15

4

6

470R SM

C52

+

10U EL

+5VVID

R163
330R SM

R160

R157

4K7 SM

56R SM

-5VVID

C66

100N SM

16

VDD

Z14B

OSD_Y

R151

75R SM

Z15B

1K0 SM

C68

10P SM

R134
4K7 SM

14.31818MHZ#A

R136
4K7 SM

27P SM#A

X3

17.73447MHZ#A

R159
4K7 SM

7

X2

C74

R158

100K SM

R126

75R SM

C75

33P SM

R135

10K SM

16

Z6B

VEE

VDD

GND

74LV4053 SM

8

VSYNC

Z20

1

CS OP

2

C VID IP

3

VS OP
GND4BURST OP

LM1881

C69

10U EL

C71

22N PE

R67

10K SM

C111

82P SM

C105
47P SM

+

220P CD

BC849B

-5VVID

VSYNC

OE OP

R64

4K7 SM

R66
22K SM

C70

C77
82P SM

C76
47P SM

+5VVID

Q2

7

Vcc

Rset

100N SM

C72

100N SM

Q1

BC849B

R139
470R SM

C67

+5VVID

+5VVID

8
7

O/E
6
5

GNDD

D9

1N4148

R69

470R SM

D10

1N4148

C62
10N SM

+5VVID

O/E

680K SM

R152

0R0 SM

+5VDIG

C73

100N SM

C54

10N SM

O/E

R65

CLOCK

+5VVID

Q13

BC849B

CLOCK

VOSD

R138
470R SM

+5VVID

R59
4K7 SM

Q12

BC849B

OSDY OSD_CVBS

R58

C55

+

1
2
3
4
5
6
7
8

9
10
11
12
13
14

10U EL

YOUT
VIDEOIN
RES
FTR
AVDD
DVDD
CSYNC
XTALIN
XTALOUT
MUTE
DATA
CLK
CSN
R

STV5730A

CSN

CLK
DATA
VOSD

10K SM

Z18

VIDEOOUT1
VIDEOOUT2

LESCREEN

LECHAR

CSN
CLK

DATA

VOSD

AGND
DGND

YIN

CIN

COUT

BAR

CO

FB

OSDY

28
27
26
25
24
23
22
21
20
19
18
17
16

B

15

G

Q10

BC849B

4K7 SM

R57
4K7 SM

+

GNDD

R63

OSD_INS

C61
10U EL

C65

100N SM

OGND

OSD_INS

OSDC

C60

10N SM

Q11
BC849B

R68
10K SM

R140
10K SM

R61
1K0 SM

OSDC

R60
2K2 SM

2K2 SM

1K5 SM1%

OSD_INS

D

C

+5VVID

R62

R125

B

+5VVID

C78

A

NTSC/PAL

1 2 3 4 5 6 7 8

NTSC/PAL

NTSCPAL

10N SM

1
2

4

Z7

74AHC1G00 SM

3 5

1
2

4

Z17

74AHC1G00 SM

3 5

DRAWING TITLE

A10 DAV OSD

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

Notes:

Circuit Diagram

Filename

J:\PROJECTS\A10_AC3\pcb\wip\Issue_1\L839C4_1.SCH

23-11-9898_1073

LJW INITIAL RELEASE 1

ECO No. DESCRIPTION OF CHANGE

Date Printed

INITIALS

DATE

Drawn by:

WAF25-Nov-1998

5 6Sheet of

DRAWING NO.

A

ISSUE

L839C4_1

87654321

D

C

JST 6W HEADER

3RD CHANNEL POWER

POWER IN

SK21

B

NSUP

A

R70
10K SM

PUREG

+UREG

R78

R79

1R0 FU

R74

PSUP

R76
16K SM

+SUP

R122
1R0 FU

R51

100R FU

R165
100R FU

10K SM

GNDD

C88

100U EL 100V

+

PROT1

R166
100R FU

R137
100R FU

R149
100R FU

R162
100R FU

SK13

Green

CAGECLAMP1

R167
100R FU

R148
100R FU

1

R75
680R SM

R156

1R0 FU

1
2

3
4
5
6

N15V

P15V

PGND

Z21

1

VREF

2

Vt2
Vt1
GND4Vtemp

LM56CIM

OUT1
OUT2

3

POSITIVE SUPPLY

HS1A
TO220HS13REG

1

Vin

GND

D8

BAS16W SM

R123
100K SM

D15

8V2 1W SM

3

ON_OFF

D12

8V2 1W SM

D16

8V2 1W SM

GNDA

+5VMICRO

VCC

4

ON/OFF

5

LM2576HV-5

D13

8V2 1W SM

8
7
6
5

OP

FBACK

HS

Z25

3A100V

P30V

N30V

FAN

D7

2

Z16
7815

I

C64

100N SM

+

C59

1M0 35V

+ C63

1M0 35V

I

FAN

P5VA

L806CL#A

Vin

Z23

7915

Vin

TO220HS30REG

1R0 FU

+5VA

L1

C108

100N SM

GND

HS4A

TO220HS30REG

Vout

GND

G

G

GND

Vout

HS2A

1M0 25V

+

C87

+15VA

O

O

-15VA

P15VA

+ C18

470U EL 25V

+ C42

470U EL 25V

N15VA

L3

2U2H SM

L5

2U2H SM

+

C83

100U EL

L7

100UH R 101K

+5VVID

P5VVID

+

C31
10U EL

+

GNDD

C114
100N SM

C115
100N SM

R96
22K SM

1M0 25V

+5VDIG

P5VDIG

C80
10U EL

C58

R73

22K SM

180R SM

+

C26

10N SM

3V9 0W5 SM

R71
10K SM

Q5
BC859B

R86

GNDD

R72

22K SM

D5

180R SM

R95
47R MF

FANSUP

HS3A

TO220HS30REG

BC849B

R13
1K0 SM

C5
10U NP

C6
10U NP

R14
1K0 SM

DRAWING TITLE

A10 DAV PSU

R87

R141
47R MF

+

Q4

Q6

BC859B

SK19
1
2

IDC2S

Z24

LM2576HV-5

1

Vin

C84

100U EL 100V

R22
56R SM

D1
6V8 400MW

D2
6V8 400MW

R21
56R SM

R77
10K SM

R97
22K SM

GND

3

5

+7V2

-7V2

R147
47K SM

4

FBACK

ON/OFF

N5VA

P7V2

+ C7

10U EL

GNDA

+ C8

10U EL

N7V2

OP

GNDD

L2

2

100UH

D6
3A100V

R161
33K SM

OL

+

C86
1M0 25V

L4

2U2H SM

L6

2U2H SM

+

-5VVID-5VA

+

-5VSRS

C43

10U EL

N5VVID

C107
10U EL

+8V

C116

1N0 SMGNDD GNDA

P8V

R50
1R0 FU

R38
1R0 FU

Z22
7805

I

Vin

+ C82

10U EL

+5VA

-15VA

GNDA GNDA

LK1
LINK10

R169
2R2 CF

R124
1R5 1W CF

Vout

GND

G

SK14
1 2
3 4
5 6
7 8
9 10

11 12
13 14
15 16
17 18
19 20

DIL20 VSKT

SRS PSU

GNDD

+5VA

GNDA

+5VMICRO

O

GNDD

C85
100N SM

-5VSRS

N5VSRS

+15VA

SRSGND2

P5VMICRO

C81
10N SM

MGND

SRSGND

GNDD

D

C

B

A

Notes:

Circuit Diagram

A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB

1 2 3 4 5 6 7 8

Filename

J:\PROJECTS\A10_AC3\pcb\wip\Issue_1\L839C6_1.SCH

ECO No. DESCRIPTION OF CHANGE

Date Printed

INITIALS

23-11-9898_1073

LJW INITIAL RELEASE 1

DATE

Drawn by:

WAF25-Nov-1998

6 6Sheet of

DRAWING NO.

ISSUE

L839C6_1