Copyright 2004 Philips Consumer Electronics B.V. Eindhoven, The Netherlands.
All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system or transmitted, in any form or by any means, electronic,
mechanical, photocopying, or otherwise without the prior permission of Philips.
Published by GH03 0495 Service PaCEPrinted in the NetherlandsSubject to modificationEN 3122 785 14850
Page 2
EN 2VAD80411.
Technical Specifications and Connection Facilities
1.Technical Specifications and Connection Facilities
1.1VAD8041 functionality:
•Loading of 8 cm and 12 cm discs by a motorized tray
•Disc type recognition and in case of a DVD+RW disc laser
power calibration
•Servo control for disc rotation, sledge movements, tilt,
focus and actuator position
•EFM+ encoding / decoding for DVD, and EFM decoding for
CD
•Writes and read DVD+RW discs and reads DVD, CD and
CD-R/RW discs
•Linking control, header insertion and sector number
updating at record
•Interfacing to the MPEG back-end for control and for data
•The back-end has to provide MPEG data processing, data
buffering, construction of logical format for Lead-in, Data
area and Lead-out part of the DVD+RW disc
1.2Connections
The following interfaces are provided for connecting the drive
to the MPEG back-end Application:
•Power Connector: 4-pin supply interface
•IDE Connector: 40-pin command and data transfer
interface
IDE Bus selection:
•Connect the unit to the mains via an isolation transformer.
•Replace safety components, indicated by the symbol ,
only by components identical to the original ones. Any
other component substitution (other than original type) may
increase risk of fire or electrical shock hazard.
Safety regulations require that after a repair, you must return
the unit in its original condition. Pay, in particular, attention to
the following points:
•Route the wires/cables correctly, and fix them with the
mounted cable clamps.
•Check the insulation of the mains lead for external
damage.
•Check the electrical DC resistance between the mains plug
and the secondary side:
1. Unplug the mains cord, and connect a wire between
the two pins of the mains plug.
2. Set the mains switch to the 'on' position (keep the
mains cord unplugged!).
3. Measure the resistance value between the mains plug
and the front panel, controls, and chassis bottom.
4. Repair or correct unit when the resistance
measurement is less than 1 MΩ.
5. Verify this, before you return the unit to the customer/
user (ref. UL-standard no. 1492).
6. Switch the unit ‘off’, and remove the wire between the
two pins of the mains plug.
2.1.2Laser Safety
This unit employs a laser. Only qualified service personnel may
remove the cover, or attempt to service this device (due to
possible eye injury).
2.2Warnings
2.2.1General
•All ICs and many other semiconductors are susceptible to
electrostatic discharges (ESD, symbol ). Careless
handling during repair can reduce life drastically. Make
sure that, during repair, you are at the same potential as
the mass of the set by a wristband with resistance. Keep
components and tools at this same potential. Available
ESD protection equipment:
– Complete kit ESD3 (small tablemat, wristband,
connection box, extension cable and earth cable) 4822
310 10671.
– Wristband tester 4822 344 13999.
•Be careful during measurements in the live voltage section.
The primary side of the power supply (pos. 1005), including
the heatsink, carries live mains voltage when you connect
the player to the mains (even when the player is 'off'!). It is
possible to touch copper tracks and/or components in this
unshielded primary area, when you service the player.
Service personnel must take precautions to prevent
touching this area or components in this area. A 'lightning
stroke' and a stripe-marked printing on the printed wiring
board, indicate the primary side of the power supply.
•Never replace modules, or components, while the unit is
‘on’.
2.2.2Laser
•The use of optical instruments with this product, will
increase eye hazard.
•Only qualified service personnel may remove the cover or
attempt to service this device, due to possible eye injury.
•Repair handling should take place as much as possible
with a disc loaded inside the player.
•Text below is placed inside the unit, on the laser cover
shield:
Laser Device Unit
Type: Semiconductor laser
GaAlAs
Wavelength: 650 nm (DVD)
: 780 nm (VCD/CD)
Output Power: 20 mW (DVD+RW
writing)
: 0.8 mW (DVD
reading)
: 0.3 mW (VCD/CD
reading)
Beam divergence: 60 degree
Figure 2-1 Class 1 Laser Product
Note: Use of controls or adjustments or performance of
procedure other than those specified herein, may result in
hazardous radiation exposure. Avoid direct exposure to beam.
CAUTION VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN AVOID EXPOSURE TO BEAM
ADVARSEL SYNLIG OG USYNLIG LASERSTRÅLING VED ÅBNING UNDGÅ UDSÆTTELSE FOR STRÅLING
ADVARSEL SYNLIG OG USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES UNNGÅ EKSPONERING FOR STRÅLEN
VARNING SYNLIG OCH OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD BETRAKTA EJ STRÅLEN
VARO! AVATTAESSA OLET ALTTIINA NÄKYVÄLLE JA NÄKYMÄTTÖMÄLLE LASER SÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN
VORSICHT SICHTBARE UND UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG GEÖFFNET NICHT DEM STRAHL AUSSETSEN
DANGER VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN AVOID DIRECT EXPOSURE TO BEAM
ATTENTION RAYONNEMEN T LASER VISIBLE ET INVISIBLE EN CAS D'OUVERTURE EXPOSITION DANGEREUSE AU FAISCEAU
!
Figure 2-2 Warning text
Page 4
EN 4VAD80413.
3. Directions For Use
Not applicable
Directions For Use
Page 5
4.Mechanical Instructions
Note that exploded views can be found in chapter 10
4.1General
Follow the dismantling instructions in described order.
Never touch the lens of the OPU.
Take sufficient ESD measures during handling.
4.2Dismantling
You can divide the Basic Engine into the following parts:
1. Loader (frame and tray)
2. PWB
3. DVD-Mechanism (OPU, traverse with turntable motor and
sledge-motor assy)
4. Encasing
4.3Cabinet
– Remove the encasing by releasing the four screws at the
underside of the drive, see figure 4-1
– Make sure that you do not lose the 5 heat paths (gray
rubber pieces that conduct the heat from the ICs to the
case)!
– If you need to measure on the PCB while a disc is inserted,
the top case should be applied again onto the drive. In this
way the clamping mechanism is established.
Mechanical Instructions
EN 5VAD80414.
2
1
Figure 4-1 Basic Engine dismantling (part1)
2
Page 6
EN 6VAD80414.
4.4Tray
– Remove encasing as as described in 4.3
– Disengage the two holders that fix the tray [1], see figure 4-
2, and pull out the tray [2]
1
1
Mechanical Instructions
2
1
1
2
Figure 4-2 Remove Tray
4.5Printed Board
Note: After exchanging the PWB (or the DVD-M) the complete
drive has to be adjusted! Run command 931 of DSW
(AdjustLaserControl). Refer to chapter 8 for adjustment
instructions!
– Remove encasing as described in 4.3
– Disconnect the 2 flex foils from the PWB connectors and
the OPU flex
– Remove the 2 screws that hold the PWB, see figure 4-3
– Remove the PCB
– Remove the yellow plate if needed by releasing the 2 snap
hooks
Figure 4-3 Remove PWB
4.6DVD-M
Caution: Never try to align or repair the DVD-Module itself!
Only the factory can do this properly. Service engineers are
only allowed to exchange the sledge motor assy.
After Exchanging the DVD-M (or the PWB) the complete drive
has to be adjusted! Run command 931 of DSW
(AdjustLaserControl). Refer to chapter 8 for adjustment
instructions!
– Remove PCB as described in 4.5
– Remove the four screws [1], see figure 4-4.
– Now you can remove the DVDM
2
1
1
Figure 4-4 Remove DVDM
1
1
Page 7
4.7Sledge Motor Assembly
Caution: Never try to align or repair the DVD-Module itself!
Only the factory can do this properly. Service engineers are
only allowed to exchange the sledge motor assy.
– Eject the tray.
– Remove the 2 screws that hold the sledge motor, see
figure 4-5
– Remove the sledge motor
Figure 4-5 Remove Sledge Motor Assy
Mechanical Instructions
EN 7VAD80414.
4.8Re-assembly
To re-assemble the module, do all processes in reverse order.
Take care of the following:
•Complete module: Place all wires/cables in their original
position
•Heat Paths: Put the 5 heat paths (gray rubber pieces) back
to their position on the ICs, see figure 4-6.
•Emergency opening slot: Be sure that the slot for the
emergency tray opener is covered by adhesive tape!
•Jumper selection: Jumper has to be in position "Master"!
Figure 4-6 Heat Path
Page 8
EN 8VAD80415.
Service Modes, Error Codes and Fault Finding
5.Service Modes, Error Codes and Fault Finding
5.1General
Please refer to the service manual of the recorder for a
description of the complete Diagnostics Software. In this
manual only drive specific error codes are explained.
5.2Self test
A power on self-test is incorporated in the software of this drive.
With DSW command 902 (Chrysalis Mpeg Codec) the set
software can retrieve the result of the self-test.
Figure 5-1 Example, nucleus 902 showing no communication with
the OPU
Following table gives the output format of this nucleus.
Bit
Byte
0tray*ttm*pcs*
1real dsp*hdr80cheetahlaconicelantec
2eeprom
7654
Reserved
Reserved
Reserved
*error code not detected in VAD8031/VAD8041
Forward Sense Tests if the forward sense value measured during drive startup is within normal range
HDR80Performs a read/write test on a register (HDR 80 is an internal module of Centaurus)
CheetahPerforms a read/write test on a register
LaconicRead the IC version (fixed) and checks if it's ok
ElantecPerforms a read/write test on a register
EepromPerforms a read/write test on an address
I2CTries addressing all I2C devices in the system - if one fails, this test fails
Please note that if the I2C test fails, most other IC tests will fail as well.
Figure 5-2 Self test Results
3210
laser forward
sense
eeprom
checksum*
eeprom empty*iic
Page 9
Service Modes, Error Codes and Fault Finding
EN 9VAD80415.
5.3Error Codes
With DSW command 910 (Digital Board Chrysalis) the set
software can retrieve an overview of all occurred engine errors.
5.3.1Momentary Errors
Byte 0: latest error:
Overview of the BE error codes.
error
errormeaning
code
0x00no_errorNo error has occurred
0x01illegal_command_errorCommand not allowed in this
state or unknown command
0x02illegal_parameter_errorParameter(s) not valid for this
0x03command_timeout_errorThe maximum execution time for
0x04sledge_home_errorThe sledge could not be moved
0x05sledge_calibration_errorAn error occurred during calibra-
0x40beta_over_under_flow_errorDuring the walking OPC a beta
0x41not_enough_calib_points_
error
0x42not_enough_power_error The calculated power during re-
0x43illegal_reading_speed_errorThe selected speed is not al-
0x44servo_fatal_errorThe actuator dissipation became
Error during OPC power calculation (samples are wrong)
test zone is full
The jitter measurement during
OPC samples readback failed
readback sampling
timum power is too high
The alpha measurement refer-
ence current is wrong (IAN)
gain is wrong
over-/under-flow was detected
Not enough valid calibration
points available for re-calibration
calibration exceeds max power
lowed for the requested command
too high during a servo recovery
Service Modes, Error Codes and Fault Finding
This error is overwritten by the next player / inquiry command.
Page 11
Service Modes, Error Codes and Fault Finding
EN 11VAD80415.
Byte 1 - 9: cumulative errors of previous error occurences.
Format of the BE error bytes.
Every individual error has its own bit in the 9-byte structure as
described in the drawing below:
byte 1
b7 b6 b5 b4 b3 b2 b1 b0
reserved
FOCUS
AGC
ERROR
FOCUS
RETRIES
ERROR
FOCUS
TIMEOUT
ERROR
RADIAL
AGC
ERROR
RADIAL
RETRIES
ERROR
RADIAL
TIMEOUT
ERROR
byte 2
TRAY
ERROR
reserved
JITTER
OPTIMIZATION
ERROR
SLEDGE
HOME
ERROR
SLEDGE
UNSTABLE
ERROR
SLEDGE
CALIBRATION
ERROR
TILT SENSOR
OFFSET
CALIBRATION
ERROR
byte 3
RECORD
ERROR
SEEK
ERROR
NO DISC
ERROR
NOT
INITIALISED
ERROR
ILLEGAL
STOPADDRESS
ERROR
ILLEGAL
PARAMETER
ERROR
ILLEGAL
COMMAND
ERROR
byte 4
RADIAL
INIT
ERROR
TILT
CALIBRATION
ERROR
COMMAND
TIMEOUT
ERROR
SERVO
FATA L
ERROR
byte5
WOBBLE PLL
ERROR
byte6
WSG
CALCULATION
ERROR
byte7
LASER
FORWARD
SENSE
ERROR
byte8
reservedreserved
ADIP
SYNC
ERROR
DVD
FREQUENCY
ERROR
NVRAM
CHECKSUM
UPDATE
ERROR
WINDOW
ERROR
FREQUENCY
ERROR
FRONTEND
OFFSET
CALIBRATION
ERROR
ADIP
CD
HF PLL
ERROR
ADIP
TIMEOUT
ERROR
ILLEGAL
RECORDING
SPEED
ERROR
LASER PLL
ERROR
NO HF
PRESENT
ERROR
ATIP
NOTFOUND
ERROR
SPEED
WINDOW
ERROR
ILLEGAL
READING
SPEED
ERROR
HEADER
TIMEOUT
ERROR
ATIP
SYNC
ERROR
SPEED
TIMEOUT
ERROR
ILLEGAL
MEDIUM
ERROR
SUBCODE
NOTFOUND
ERROR
ATIP
WINDOW
ERROR
NON
EXISTING
BCA
ERROR
SELFTEST
ERROR
SUBCODE
TIMEOUT
ERROR
ATIP
TIMEOUT
ERROR
BCA
READ
ERROR
I2C
ERROR
OPC
READ
SAMPLES
ERROR
OPC
BAD JITTER
MEASUREMENT
ERROR
OPC
TEST ZONE
FULL
ERROR
OPC
POWER
CALCULATION
ERROR
byte9
RETURN
VALUE
INVALID
ERROR
BUFFER
OVERRUN
ERROR
These errors are kept in memory until a power down of the
drive (e.g. when recorder goes to standby) or reset of the drive.
BETA
OVER/UNDER
FLOW
ERROR
NOT ENOUGH
CALIB POINTS
ERROR
OPC
START
POWER HIGH
ERROR
NOT ENOUGH
POWER
ERROR
OPC
START
POWER LOW
ERROR
ROPC
ALPHA
GAIN
ERROR
OPC
RECORD
POWER
ERROR
ROPC
ALPHA
REF CURRENT
ERROR
OPC
MEDIA
PARAMETER
ERROR
ROPC
ALPHA
OVERFLOW
ERROR
Page 12
EN 12VAD80415.
5.3.2Cumulative errors
These errors are stored in EEPROM and are thus non-volatile
showing the complete error history of the drive.
Byte 1 - 9: cumulative errors of previous player / inquiry error
occurences. These bytes are the same as the nine bytes (1-9)
of the Momentary errors
5.3.3Software fatal assert
Gives row number and file name in the source code of the
firmware of the data path of the AV3
In case of exchanging DVD-M or PWB an adjustment to align
OPU and PWB to each other is necessary.
8.1.1Adjustment Procedure
– Connect the Digital Board to a PC via serial cable (3122
785 90017)
– Start up Hyperterminal or any other terminal program with
the correct settings (19200 8-N-1)
– Power on the set
– Call up nucleus 931 of the DSW. The adjustment takes
about 30 seconds
Example:
DS:> 931
93100
Test OK @
– Now data within the OPU EEPROM and the FLASH of the
PWB are aligned.
8.2Drive Test
8.2.1Short Term Test Procedure
Test 1: Disc LVP 12.01 (7104 099 91731) test layer change on
track 28 ->31
Duration: 1 minute
In case no defect is found during the “Short Term Test
Procedure” the test has to be extended with a burn in test “Long Term Test Procedure”.
The burn in test described herein should be done with a
DVD+RW disc.
Make a recording of 1 to 2 hours on M1/HQ and M2/SP mode.
Remark:
Attention! To prevent scratches the discs should be treated
very carefully!
Heavily scratched discs have a bad influence on the test
performance and should be replaced.
The technician has to decide by visual inspection the reliability
of his test material.
The pictures below show a bad example of discs used too long.
When the LVP12.01 disc is loaded and accepted the next steps
are:
– Skip to track 29.
– Press next to chapter 30.
– Fast forward to halfway track 30
– Play track 30 till track 31 halfway
– When this part of the disc is played without any still pictures
or freeze frames the beamlanding of the OPU is good (the
track transition at the beginning of track 31 gives a short
still picture but this is normal.)
– Stop the disc.
Test 2: DVD+R blank disc type Ricoh 4X (7104 099 94261)
Duration: 4 minutes
– Record 1 minute
–Press stop
– Open / close
– Play back recorded track
Remark: When this disc is used for 30 recordings the disc
appears to be full. But physically the disc is not full and to use
also the remaining space on the disc you can do this by
deleting the index pictures.
– Play a few seconds from track 1
– Skip to the last track
– Play a few seconds of the last track.
– Stop the disc
Figure 8-1
Figure 8-2
8.2.2Long Term Test Procedure
Following the steps to be taken for all DVD recorders coming in
for service to the workshop related to a DVDM failure and which
have “No Defect Found”, NDF after a Short Term Test.
Page 32
EN 32VAD80418.
Alignments, Test Procedures
Flowchart for test instruction
In the flowchart below it is described how and when the burn in
test has to be carried out.
- 1st step: contact the customer directly by phone or e-mail to discuss the problem of the set
- 2nd step: if contact with the customer is not possible then add a paper with the returned set,
informing the customer about the possibility to contact the technician directly.
Following information should be mentioned on the paper:
- name of the technician
- company telephone number (extension) of the technician (for direct contact)
- jobsheet number
- information that the set was tested and found to be within the specs. and no failure occured
during the quality and functional check
exchange DVDM
Figure 8-3
Page 33
Circuit Descriptions, Abbreviation List, and Data Sheets
9.Circuit Descriptions, Abbreviation List, and Data Sheets
EN 33VAD80419.
9.1General
The VAD8041 module, also known as “AV3.5”, is a Video
Recorder Drive with an IDE interface intended for use in a
consumer DVD+RW/+R video recorder.
The video recorder engine performs all basic servo tasks. It
reads data from and writes data to the disc and controls all
functions like tray control, start/stop the disc, tracking, jumping
and communicating to the host.
9.2Overall Block Diagram DVDM & Frontend
OPU 66
Laser driver
SA56202
Brush-less
Motordriver
3D
BA5995FM
BA5995FM
Laser
DVD
Stepper
Laser
CD
EEPROM
EL6915
PAEDIC
Laconic
Cheetah
Mechanically, the module consists of a motorized tray loader
that contains the dual laser optical pickup unit and a PCBA that
contains all the electronics needed to control the drive and
interfacing to the MPEG encoder/decoder back-end
application.
There is a temperature sensor included in the drive that
prevents malfunction or destruction of the drive in case the
temperature inside the drive gets too high.
Flash
Sync
ROM
DRAM
Digital Backend
IDE
CENTAURUS
9.3Centaurus
Centaurus Basic Functions Block Diagram
Channel
Codec
Analogue
Servo
Controller
Analogue
Figure 9-2
The Centaurus, IC7500 is a highly integrated IC that controls all
the functions of the drive. It interfaces via the IDE to the MPEG
back-end and incorporates the following functions:
•CD/DVD channel decoder/encoder
•CD/DVD data block decoder/encoder
•Buffer Manager
•Digital Servo processor using digital signal processor.
•Drive System microprocessor based on MIPS core.
The MIPS microcontroller uses Flash ROM for the firmware
and SRAM to execute the program. SDRAM is provided for the
encoding/decoding function block of centaurus. 2 MBytes of
data buffer size is available inside the IC for data storage.
Manager
Control
Processor
Buffer
Figure 9-1
9.4Cheetah
The Cheetah, IC7201 is an analogue pre-processing for the
diode signals coming from the OPU. It contains an amplifier
with programmable gain that amplifies the RF signal to adapt
the output for the different reflectivity of the various discs. The
tracking signals are filtered and normalized. In addition the IC
contains a timing circuit for the sample and hold circuits and for
switching the various blocks between read and write.
Supporting functions such as laser control and offset control
are incorporated. Communication to and from the IC is based
on a fast two-wire serial bus that works according to the I2C
interface protocol.
9.5 Laconic
The main function of the LACONIC, IC7300 is to control the
laser power. The IC forms a closed control loop in combination
with the Elantec located on the OPU. It compensates aging and
temperature of the laser. Furthermore it forms a fingerprint
correction loop. It also acts as bridge between IIC and serial
bus of the Elantec laser driver on the OPU.
9.6Optical Pick-up Unit
The OPU66 is a dual laser Optical Pick-up Unit for DVD+RW/
+R. It consists of a 3-D actuator for focusing, redial tracking and
tilt correction.
•650nm laser for DVD
•780nm laser for CD
On the interconnecting flex several electrical components are
mounted.
•Elantecprogrammable laser diode power
driver
Page 34
EN 34VAD80419.
•Paedicintegrated photo detector with
programmable gain pre-amplifier
•Eepromcontaining a number of values
representing adjustments belonging to the OPU.
The laser control and diode signal processor ICs together with
an EEPROM are mounted on the OPU flex.
The laser control IC generates the DVD laser read and writing
signals needed for reading DVD discs and writing DVD+RW /
+R discs (write strategies of DVD+RW / +R discs).
The diode signal processor is an analogue pre-processor
adapted for the CD and CD-R / RW read function.
The EEPROM contains information about writing current,
writing strategies and other parameters belonging to the OPU.
9.7Motor and Servo drivers
The SA56202 is a one-chip motor driver IC that is capable to
drive all motors of CD or DVD systems: spindle, sled and
loading motors. The driver for the 3-phase, brushless, hallcommutated spindle motor uses True-Silent PWMTM. This
proprietary technology ensures that all 3-phase motor currents
are sinusoidal resulting in an optimally silent and powerefficient driver. Internal compensation of the spindle motor's
back-EMF enables the driver to operate in current-steering
mode without using external power-dissipating sense resistors.
The driver for the 2-phase sled stepper motor operates in
current-steering PWM mode. In addition the IC contains four
full-bridge linear channels that are used to drive the loading
motor.
The 3D actuators (focus, tracking and tilt) are driven by IC
7409, BA5995FM.
Circuit Descriptions, Abbreviation List, and Data Shee ts
Page 35
Circuit Descriptions, Abbreviation List, and Data Sheets
Circuit Descriptions, Abbreviation List, and Data Shee ts
SymbolPinDescription
VIH1Satellite segment H input
GND12Ground
VIC3Central segment C input
VIB4Central segment B input
GND15Ground
RFNIN6Inverse differential RF input /
Single-ended RF read input
RFPIN7Differential RF input/
Single-ended RF write input
VDD18Positive supply
VID9Central segment D input
VIA10Central segment A input
VDD111Positive supply
VIE12Satellite segment E input
VIG13Satellite segment G input
RWOUT14R/W signal output
SDA15Data input/output
SCL16Clock input I
I2C
2
C
SILD17Strobe line of serial bus interface
SIDA18Data line of serial bus interface
SICL19Clock line of serial bus interface
TIMOUT20EFMTIM test output
R/W21External Read/Write signal input
VDDD22Positive supply digital part
VSSD23digital ground
REF/ECN24Reference input for timing signals in EFMTIM bypass mode
[1]
[2]
/
[1]
[1]
/
/
[2]
Inverse EFM clock input
RS/ECP25RF sampling signal
EFM clock input
[2]
TH1/EDN26Segment sampling timing signal
Inverse EFM data input
TH2/EDP27Segment sampling timing signal
EFM data input
[2]
[1]
/
SERTST28Enable test mode (Tie to GND or leave open for normal operation)
VDD229Positive supply voltage
Page 37
Circuit Descriptions, Abbreviation List, and Data Sheets
GND230Supply ground
RFP31RF output voltage, positive
RFN32RF output voltage, negative
RFREF33Reference voltage for differential RF output common mode level
PPN34Output PP voltage
CFTC35FTC high pass filter capacitor
FTC36FTC output
GND137Supply ground
CA138Beta circuit external capacitor
CA239Beta circuit external capacitor
CCALF40Beta circuit external capacitor
RREF41Reference resistor to ground
GND142Supply ground
CMPP43MPP external capacitor
VDD144Positive supply
MON145Monitor output voltage
MON246Monitor output voltage
S2/XDN47Servo output current
S1/MIRN48Servo output current
D4/FEN49Servo output current
D3/REN50Servo output current
D2/TLN51Servo output current
D152Servo output current
IDDQTST53Select zero dissipation mode (tie to GND for normal operation)
CALF54RF average level signal
A255RF bottom level signal
A156RF top level signal
SROUT57shift register output for register test mode
ALFA58alfa output current
LASP59laser power setpoint signal
TEST60Test output
RRF61Single ended RF read input voltage
SymbolPinDescription
EN 37VAD80419.
Page 38
EN 38VAD80419.
SymbolPinDescription
WRF62Single ended RF write input voltage
VREF63PDIC reference voltage output
VIF64Satellite segment F input
[1] Only in EFM bypass mode
[2] EFM clock and data when not in EFM bypass mode.
Circuit Descriptions, Abbreviation List, and Data Shee ts
Page 39
Circuit Descriptions, Abbreviation List, and Data Sheets
IC7300, TZA1042: Servo Baord, Laser Power Controller
Block diagram
EN 39VAD80419.
DRAFT
Page 40
EN 40VAD80419.
Pin description
SymbolPinType Drive
AEZ1I hypdTAlpha Error Zero/Alpha Set Zero
Circuit Descriptions, Abbreviation List, and Data Shee ts
Description
/Thr.
V
V
DDD3
SSD3
2P-Digital Pad Supply
3P-Digital Pad Supply
CLOCKOUT4TMBuffered Oscillator Output
OSCO5AOAOutput of inverting Amplifier that forms oscillator
OSCI6AIAInput of inverting Amplifier that forms oscillator
TEST1D7I pdTTest pin
AMEAS8AIAAlpha M easure – value of measured disk wri ting
quality
V
V
DDA1
SSA1
9P-Analogue Supply
10P-Analogue Supply
LASP11AOALaser Power – indicates power level
VREFL12AOABandgap Vol tage Reference ground connection
VREFH13AOABandgap Voltage Reference output
VDEL14AIAVolt age input for Delta “laser power”
VTHR15AIAVoltage input for Threshold “laser power”
VOPUREF16AOAReference Voltage for OPU
VREFIN17AIAInput Reference Voltage for Vthr and Vdel
V
V
DDA2
SSA2
18P-Analogue Supply
19P-Analogue Supply
TEST1A20ABATest pin
IAPCW21AOACurrent Output of Delta Reference
IAPCR22AOACurrent Output of Threshol d Reference
TEST2A23ABATest pin
ENR224TMProgrammable Output Flag
ENR125B pdM/TDevice Initialisation/Programmable Output Flag (must
be driven to VDDduring reset)
DVDCD26TMProgrammable Output Flag for indicating DVD/CD
mode
HILO27TMProgrammable Output Flag forindicating High/Low
reflectivity
V
V
SSD1
DDD1
28P-Digital Pad Supply
29P-Digital Pad Supply
BUSY30BM/TBusy Enable input fromElantec / Board test IO
SEN31BM/TSerial Enable output to Elantec / Board test IO
SDIO32BM/TSerial data input output from/to Elantec / Board testI O
SCLK33BM/TBusy Enable input from Elantec / Board test IO
WSB34BM/TWrite StrategyBank – output controls OPU write
switching / Board test IO
Page 41
Circuit Descriptions, Abbreviation List, and Data Sheets
p
EN 41VAD80419.
Pin description
SymbolPinTypeDrive
…continued
Description
/Thr.
IRQN35ODMInterrupt Request Not – active low interrupt request
RWN38BM/TRead/Write not – indicates power setpoints/Board test
IO
V
V
SSD2
DDD2
39P-Digital Core Supply
40P-Digital Core Supply
BANK41I hypdTCAV setpoint switching input signal / Board test IO
TEST2D42I pdTTest pin
SDA43BODM/T
SCL44IT
I2C
Serial Data
I2C
Serial Clock
[1]All supply pins must be connected to the same external power supply voltage
[2]All inputs are 5V tolerant – i.e. they will drive the supply voltage (3.0-3.6V), but will work correctly
when interface to a 5V drive device
[3]The pin type definition is given below:
PinType Definition Table
TypeDefinition
Iinput
Ooutput
ODopen drain
Bbi-directional
BODbi-directional
open drain
Ttri-state output
AIanalog input
AOanalog output
ABanalog
bi-directional
Ppower
connection
hyhysteresis on
input
pdhysteresis on
out
ut
Page 42
EN 42VAD80419.
IC7402, SSA56202: Servo Board, Motor Driver
Circuit Descriptions, Abbreviation List, and Data Shee ts
Page 43
Circuit Descriptions, Abbreviation List, and Data Sheets
EN 43VAD80419.
PIN DESCRIPTION
PIN SYMBOL DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
HU+
HU
HV+
HV
HW+
HW
HBIAS
RREF
REMF
RLIM
GNDSPN1 spindle driver power ground 1 46
U
VDDSPN1 spindle driver power supply 1 44
V
GNDSPN2 spindle driver power ground 2 42
W
VDDSPN2 spindle driver power supply 2 40
FG
GNDDIG
INSPN
REF
VDDANA
CP1
CP2
CAPY
CTL1
CTL2
TEMP
positive Hall input U
negative Hall input U
po
sitive Hall input V
negative Hall input V
positive Hall input W
negative Hall input W
Hall element bias
ext. res. for current reference 49
ext. res. for EMF regeneration
ext. res. for current limit
spindle driver output U
spindle dri
spindle driver output W
frequency generator output
ground supply
spindle driver input
reference in
system supply voltage
charge pump cap. conn. 1
charge pump cap. conn. 2
charge pump output voltage 32
driver logic control input 1
driver logic control input 2
thermal warning
Circuit Descriptions, Abbreviation List, and Data Shee ts
IC7408,7409 BA5995: Servo Board, 4-channel BTL driver
IC actuator and motor drive
23
24
25
26
27
28
PreV
CC
+
20k
10k
+
+
10k
22
20k
+
21
STAND BY
ch1 / 3 / 4
PowV
(ch3 / 4)
10k10k10k10k
ch3
CC
+
LEVEL
SHIFT
+
10k
10k
ch4
+
LEVEL
SHIFT
+
10k10k
15
16
17
18
19
20
+
10k
+
3
2
1
20k
4
10k
MUTE
ch1
5
Pin No.
Note) Symbol of + and (output of drivers) means polarity to input pin.
(For example if voltage of pin4 high, pin14 is high.)
Pin name
BIAS IN
1
OPIN1 (+)
2
OPIN1 ( )
3
OPOUT1
4
IN2
5
MUTE
6
STBY2
7
GND
8
PowV
9
10
PowV
11
V
O2
()
12
V
O2
(+)
13
V
O1
()
14
O1
(+)
V
Input for bias-amplifier
Non inverting input for CH1 OP-AMP
Inverting input for CH1 OP-AMP
Output for CH1 OP-AMP
Input for CH2
Input for CH1 mute control
Input for CH2 stand by control
Substrate ground
CC
1
V
CC
for CH1 power block
CC
2
CC
for CH2 power block
V
Inverted output of CH2
Non inverted output of CH2
Inverted output of CH1
Non inverted output of CH1
Non inverted output of CH4
Inverted output of CH4
Non inverted output of CH3
Inverted output of CH3
V
CC
CC
for CH3/4 power block
3
Input for CH1/3/4 stand by control
Substrate ground
Output for CH3 OP-AMP
Inverting input for CH3 OP-AMP
Non inverting input for CH3 OP-AMP
Output for CH4 OP-AMP
Inverting input for CH4 OP-AMP
Non inverting input for CH4 OP-AMP
V
CC
for pre block
SHIFT
10k
10k
+
+
10k10k10k10k
13
10k10k
+
ch1
14
Resistor unit : [ ]
Page 45
Circuit Descriptions, Abbreviation List, and Data Sheets
M
m
IC7500, PNX7850: Servo Board, Channel Codec/Buffer
Manager/Servo Processor and Controller
Nexperia PNX7850 conceptual block diagra
EN 45VAD80419.
wobble
HF
motor
actuators
LF input
OPC input
ANALOG
EF
CHANNEL CODECBUFFER
CD/DVD
WOBBLE
PROCESSOR
SIGNAL
CONDITION.
TACHO/MOTOR
CONTROL
SERVO DSP AND CONTROL PROCESSOR
SERVO
ACCELERATORS
OPC
EFM WRITE
CLOCK/DATA
GENERATOR
BIT
DETECTION
AND
DEMOD.
TELEMETRY
SERVO
DSP
CD/DVD
CHANNEL
ENCODE/
DECODE
WITH
ERROR
CORRECTION
DATA BLOCK
MICRO
INTERFACE
MIPS PR1910
INSTRUCTION
EXECUTION
UNIT
COPROCESSOR
ENCODE/
DECODE
PI-bus
INTERFACE
MANAGER
DRIVE INTERFACE
MICRO
INTERFACE
POWER
MANAGEMENT
CACHE
DEBUG SUPPORT
DEEPLY EMBEDDED
MEMORY
SDRAM
SDRAM
CONTROLLER
MEMORY
PROCESSOR
AUTOMATION
INTERRUPT
CONTROLLER
STATIC MEMORY
INTERFACE
ROM
EJTAG
CSS
UDMA66
HOST
INTERFACE
AUDIO
PROCESSOR
UART
CONFIG
GPIO
I2C
POWER CONTROL
AND RESET
host
audio
UART
GPIO
I2C
IC7603, LD1117: Servo Board, Voltage Regulator
BLOCK DIAGRAM
Flash
Page 46
EN 46VAD80419.
Circuit Descriptions, Abbreviation List, and Data Shee ts
9.9Abbreviation list
ADCAnalogue to Digital Converter
ADIPADdress In Pre-groove
AGCAutomatic Gain Control
CDCompact Disc
CLVConstant Linear Velocity
DROPPIDvd Rewritable Opu Pre-Processor IC
AMAmplitude Modulation
BEBasic Engine
ComPairComputer aided rePair
CD-DACD Digital Audio
CSChip Select
DACDigital to Analogue Converter
DAIODigital Audio Input Output
DENCDigital Encoder
DFUDirection For Use: description for the
end user
DNRDynamic Noise Reduction
DRAMDynamic RAM
DSDDirect Stream Digital
DSPDigital Signal Processing
DVDDigital Versatile Disc
EEPROMElectrical Erasable Programmable
ROM
EFMEight to Fourteen bit Modulation
FDSFull Diagnostic Software
HFHigh Frequency
I2CIntegrated Ic bus (signals at 5V level)
I2SIntegrated Ic Sound bus (signals at
3.3V level)
ICIntegrated Circuit
IFIntermediate Frequency
IRQInterrupt ReQuest
LADICLAser Driver IC
LLDLoss Less Decoder
LPCMLinear Pulse Code Modulation
LRCLKLeft/Right CLocK
MACEMini All Cd Engine
MPEGMotion Pictures Experts Group
NCNot Connected
NVMNon Volatile Memory: IC containing
DVD related data e.g. alignments
OPCOptimum Power Calibration
OPUOptical Pickup Unit
PCBPrinted Circuit Board (see PWB)
PCSPosition Control Sledge
PLLPhase Locked Loop
PCMPulse Code Modulation
PCM_CLKAudio system clock for DAC
PCM_OUTxAudio serial output data
PSUPower Supply Unit
PWBPrinted Wiring Board (see PCB)
RAMRandom Access Memory
RGBRed, Green and Blue colour space
ROMRead Only Memory
RFRadio Frequency
S2BSerial to Basic engine, communication
bus between host- and servo
processor
SCLSerial Clock I2C
SCLKAudio serial bit clock
SDASerial Data I2C
SDRAMSynchronous DRAM
SMCSurface Mounted Components
S/PDIFSony Philips Digital InterFace
SPIDRESignal Processing Ic for Dvd
REwritable
SRAMStatic Random Access Memory
STBYSTandBY
SVCDSuper Video CD
SWSoftWare
THDTotal Harmonic Distortion
TTLTransistor Transistor Logic (5V logic)
uPMicroprocessor
VCDVideo CD
Y/CLuminance (Y) and Chrominance (C)
0191 3139 194 01551 HEAT SINK PAD
0193 3139 194 01561 HEAT SINK PAD (DRIVER)
AUDIO DISC
BLANK DISC
(CENTAURUS)
(CHEETAH)
Printed Board
Various
1100 2422 025 17821 CON H 45P F 0.50
1302 2422 543 01025 Crystal 16.93 MHz
1400 2422 025 05548 CON H 4P F 1.00
1401 2422 025 18382 CON H 11P F 1.00
1500 2422 543 01025 Crystal 16.93 MHz
1600 2422 033 00396 SOC COMBI H 56P
1601 2122 662 00152 0.18Ω PTC 1812 16V
1602 2122 662 00136 0.21Ω PTC 1812 6V
1700 2422 025 17909 CON BM H 50P F 0.5
1703 3139 190 20051 CON V 2X 10P M 1.27
1705 2422 025 05544 CON H 20P F 0.50