Prology DVD-400 Service manual
MODEL
SERVICE MANUAL
DVD-400
CAUTION : Before servicing this chassis, read the "PRODUCT SAFETY SERVICE FOR VIDEO PRODUCTS" section
on page 2 of this manual.
CONTENTS
SERVICE PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . 2,3
BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
IC INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5,18
PRINTED CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19,25
REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . 26,30
PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS
CAUTION: DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY AND
NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT
MANUFACTURER'S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT
ONLY VOID THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR
ANY RESULTING PROPERTY DAMAGE OR USER INJURY.
SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE
THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETY CHECKS
AND SERVICING GUIDELINES. TO DO OTHERWISE, INCREASES THE RISK OF
POTENTIAL HAZARDS AND INJURY TO THE USER.
WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTECTION
FROM A.C. LINE SHOCK.
SAFETY CHECKS
AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRECTED, A CHECK
SHOULD BE MADE OF THE FOLLOWING.
SUBJECT: FIRE & SHOCK HAZARD
1. BE SURE THAT ALL COMPONENTS ARE POSITIONED IN SUCH A WAY AS
TO AVOID POSSIBILITY OF ADJACENT COMPONENT SHORTS. THIS IS
ESPECIALLY IMPORTANT ON THOSE MODULES WITCH ARE
TRANSPORTED TO AND FROM THE REPAIR SHOP.
2. NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVE DEVICES SUCH AS
INSULATORS, BARRIERS, COVERS, SHIELDS, STRAIN RELIEFS, POWER
SUPPLY CORDS, AND OTHER HARDWARE HAVE BEEN REINSTALLED PER
ORIGINAL DESIGN. BE SURE THAT THE SAFETY PURPOSE OF THE
POLARIZED LINE PLUG HAS NOT BEEN DEFEATED.
3. SOLDERING MUST BE INSPECTED TO DISCOVER POSSIBLE COLD
SOLDER JOINTS, SOLDER SPLASHES OR SHARP SOLDER POINTS. BE
CERTAIN TO REMOVE ALL LOOSE FOREIGN PARTICLES.
4. CHECK FOR PHYSICAL EVIDENCE DF DAMAGE OR DETERIORATION TO
PARTS AND COMPONENTS, FOR FRAYED LEADS AND DAMAGED
INSULATION (INCLUDING A.C. CORD), AND REPLACE IF NECESSARY
FOLLOW ORIGINAL LAYOUT, LEAD LENGTH AND DRESS.
5. NO LEAD OR COMPONENT SHOULD TOUCH A RECEIVING TUBE OR A
RESISTOR RATED AT 1 WATT OR MORE. LEAD TENSION AROUND
PROTRUDING METAL SURFACES MUST BE AVOIDED.
6. ALL CRITICAL COMPONENTS SUCH AS FUSES. FLAMEPROOF RESISTORS,
CAPACITORS, ETC. MUST BE REPLACED WITH EXACT FACTORY TYPES,
DO NOT USE REPLACEMENT COMPONENTS OTHER THAN THOSE
SPECIFIED OR MAKE UNRECOMMENDED CIRCUIT MODIFICATIONS.
7. AFTER RE-ASSEMBLY OF THE SET, ALWAYS PERFORM AN A.C. LEAKAGE
TEST ON ALL EXPOSED METALLIC PARTS OF THE CABINET, (THE
CHANNEL SELECTOR KNOB, ANTENNA TERMINALS. HANDLE AND
SCREWS) TO BE SURE THE SET IS SAFE TO OPERATE WITHOUT DANGER
OF ELECTRICAL SHOCK. DO NOT USE A LINE ISOLATION TRANSFORMER
DURING THIS TEST, MAKE SURE TO USE AN A.C. VOLTMETER. HAVING
5000 OHMS PER VOLT OR MORE SENSITIVITY, IN THE FOLLOWING
MANNER; CONNECT A 1500 OHMS 10 WATT RESISTOR, PARALLELED BY
A.15 MFD. 150V A.C. TYPE CAPACITOR BETWEEN A KNOWN GOOD EARTH
GROUND (WATER PIPE, CONDUIT, ETC.) AND THE EXPOSED METALLIC
PARTS, ONE AT A TIME. MEASURE THE A.C. VOLTAGE ACROSS THE
COMBINATION OF 1500 OHM RESISTOR AND 15 MFD CAPACITOR.
REVERSE THE A.C. PLUG AND REPEAT A.C. ANY VOLTAGE
MEASUREMENTS FOR EACH EXPOSED METALLIC PART. VOLTAGE
MEASURED MUST NOT EXCEED 75 VOLTS R.M.S. THIS CORRESPONDS
TO 0.5 MILLIAMP A.C. ANY VALUE EXCEEDING THIS LIMIT CONSTITUTES A
POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY.
GOOD EARTH GROUND
SUCH AS THE WATER
PIPE, CONDUIT, ETC.
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART
SUBJECT GRAPHIC SYMBOLS
THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN
EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE
PERSONNEL TO THE PRESENCE OF UNINSULATED "DANGEROUS
VOLTAGE" THAT MAY BE OF SUFFICIENT MAGNITUDE TO
CONSTITUTE A RISK OF ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS
INTENDED TO ALERT THE SERVICE PERSONNEL TO THE
PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE
LITERATURE.
SUBJECT: X-RADIATION
1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PERSONNEL
COVER THE SUBJECT OF
X-RAYS IN CURRENT T.V. RECEIVERS IS THE PICTURE TUBE. HOWEVER,
THIS TUBE DOES NOT EMIT X-RYS WHEN THE HIGH VOLTAGE IS AT THE
FACTORY SPECIFIED LEVEL. THE PROPER VALUE IS GIVEN IN THE
APPLICABLE SCHEMATIC. OPERATION AT HIGHER VOLTAGES MAY CAUSE A
FAILURE OF THE PICTURE TUBE OR HIGH VOLTAGE SUPPLY AND, UNDER
CERTAIN CIRCUMSTANCES, MAY PRODUCE RADIATION IN EXCESS OF
DESIRABLE LEVELS.
2. ONLY FACTORY SPECIFIED C.R.T ANODE CONNECTORS MUST BE USED.
DEGAUSSING SHIELDS ALSO SERVE AS AN X-RAY SHIELD IN COLOR SETS,
ALWAYS RE-INSTALL THEM.
3. IT IS ESSENTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN
ACCURATE AND RELIABLE HIGH VOLTAGE METER. THE CALIBRATION OF
THE METER SHOULD BE CHECKED PERIODICALLY AGAINST A
REFERENCE STANDARD, SUCH AS THE ONE AVAILABLE AT YOUR
DISTRIBUTOR.
4. WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLY, THERE IS
NO POSSIBILITY OF AN
CHASSIS IS SERVICED, THE BRIGHTNESS SHOULD BE RUN UP AND DOWN
WHILE MONITORING THE HIGH VOLTAGE WITH A METER TO BE CERTAIN
THAT THE HIGH VOLTAGE DOES NOT EXCEED THE SPECIFIED VALUE AND
THAT IT IS REGULATING CORRECTLY. WE SUGGEST THAT YOU AND YOUR
SERVICE ORGANIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE
REGULATION IS ALWAYS CHECKED AS A STANDARD SERVICING
PROCEDURE AND THAT THE HIGH VOLTAGE READING BE RECORDED ON
EACH CUSTOMER'S INVOICE.
5. WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS IN A
PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH VOLTAGE AVOID BEING
UNNECESSARILY CLOSE TO THE PICTURE TUBE AND THE HIGH VOLTAGE
SUPPLY DO NOT OPERATE THE PRODUCT LONGER THAN IT IS NECESSARY
TO LOCATE THE CAUSE OF EXCESSIVE VOLTAGE.
6. REFER TO HV. B+ AND SHUTDOWN ADJUSTMENT PROCEDURES
DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS(WHERE
USED).
X-RADIATION. THE ONLY POTENTIAL SOURCE OF
X-RADIATION PROBLEM. EVERY TIME A COLOR
SUBJECT: IMPLOSION
1. ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTEGRAL
IMPLOSION PROTECTION SYSTEM, BUT CARE SHOULD BE TAKEN TO
AVOID DAMAGE DURING INSTALLATION, AVOID SCRATCHING THE TUBE. IF
SCRATCHED REPLACE IT.
2. USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES.
SUBJECT: TIPS ON PROPER INSTALLATION
1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS. CUBBYHOLE OR
CLOSELY FITTING SHELF SPACE, OVER OR CLOSE TO HEAT DUCT, OR IN
THE PATH OF HEATED AIR FLOW.
2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIO
INSTALLATIONS WHERE DEW IS A FACTOR, NEAR STEAM RADIATORS
WHERE STEAM LEAKAGE IS A FACTOR, ETC.
3. AVOID PLACEMENT WHERE DRAPERIES MAY OBSTRUCT REAR VENTING.
THE CUSTOMER SHOULD ALSO AVOID THE USE OF DECORATIVE
SCARVES OR OTHER COVERINGS WHICH MIGHT OBSTRUCT VENTILATION.
4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMERCIAL
MOUNTING KIT, MUST FOLLOW THE FACTORY APPROVED MOUNTING
INSTRUCTIONS. A PRODUCT MOUNTED TO A SHELF OR PLATFORM MUST
RETAIN ITS ORIGINAL FEET (OR THE EQUIVALENT THICKNESS IN SPACERS)
TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM. BOLTS OR
SCREWS USED FOR FASTENERS MUST NOT TOUCH ANY PARTS OR
WIRING. PERFORM LEAKAGE TEST ON CUSTOMIZED INSTALLATIONS.
5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ON
SLOPING SHELF OR A TILTED POSITION, UNLESS THE PRODUCT IS
PROPERLY SECURED.
6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS
MOUNTING TO THE CART CAUTION THE CUSTOMER ON THE HAZARDS OF
TRYING TO ROLL A CART WITH SMALL CASTERS ACROSS THRESHOLDS
OR DEEP PILE CARPETS.
7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STAND WHICH
HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES, INC. FOR USE
WITH THEIR SPECIFIC MODEL OF TELEVISION RECEIVER OR
GENERICALLY APPROVED FOR USE WITH TV'S OF THE SAME OR LARGER
SCREEN SIZE.
8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS. EXPLAIN
THAT A FOREST OF EXTENSIONS SPROUTING FROM A SINGLE OUTLET
CAN LEAD TO DISASTROUS CONSEQUENCES TO HOME AND FAMILY.
2
SERVICING PRECAUTIONS
CAUTION : Before servicing the DVD covered by this
service data and its supplements and ADDENDUMS, read
and follow the SAFETY PRECAUTIONS NOTE : if
unforeseen circumstances create conflict between the
following servicing precautions and any of the safety
precautions in this publications, always follow the safety
precautions.
Remember Safety First:
General Servicing Precautions
1. Always unplug the DVD AC power cord from the AC
power source before:
(1) Removing or reinstalling any component, circuit board,
module, or any other assembly.
(2) Disconnection or reconnecting any internal electrical
plug or other electrical connection.
(3) Connecting a test substitute in parallel with an
electrolytic capacitor
Caution : A wrong part substitution or incorrect
polarity installation of electrolytic capacitors may
result in an explosion hazard.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged
easily by static electricity. Such components commonly are
called Electrostatically Sensitive (ES) Devices. Examples of
typical ES devices are integrated circuits and some field
effect transistors and semiconductor chip components.
The following techniques should be used to help reduce the
incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor
component or semiconductor-equipped assembly, drain
off any electrostatic charge on your body by touching a
known earth ground. Alternatively, obtain and wear a
commercially available discharging wrist strap device,
which should be removed for potential shock reasons
prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES
devices, place the assembly on a conductive surface
such as aluminum toil, to prevent electrostatic charge
buildup or exposure of the assembly.
2. Do not spray chemicals on or near this DVD or any of its
assemblies.
3. Unless specified otherwise in this service data, clean
electrical contacts by applying an appropriate contact
cleaning solution to the contacts with a pipe cleaner,
cotton-tipped swab, or comparable soft applicator.
Unless specified otherwise in this service data,
lubrication of contacts is not required.
4. Do not defeat any plug/socket B+ voltage interlocks with
witch instruments covered by this service manual might
be equipped.
5. Do not apply AC power to this DVD and/or any of its
electrical assemblies unless all solid-state device heat
sinks are correctly installed.
3. Use only a GROUNDED-tip soldering iron to solder or
unsolder ES devices.
4. Use only an anti-static solder removal device. Some
solder removal devices not classified a "anti-static" can
generate electrical charges sufficient to damage ES
devices.
5. Do not use freon-propelled chemicals. These can
generate electrical charge sufficient to damage ES
devices.
6. Do not remove a replacement ES device from its
protective package until immediately before you are
ready to install it. (Most replacement ES devices are
packaged with leads electrically shorted together by
conductive foam, aluminum foil, or comparable
conductive material.)
6. Always connect test instrument ground lead to the
appropriate ground before connection the test
instrument positive lead. Always remove the test
instrument ground lead last.
Insulation Checking Procedure
Disconnect the attachment plug trom the AC outlet and turn
the power on. Connect an insulation resistance meter(500V)
to the blades of the attachment plug. The insulation
resistance between each blade of the attachment plug and
accessible conductive parts (Note 1) should be more than
1M ohm.
Note 1 : Accessible Conductive Parts including Metal
panels, input terminals, Earphone jacks, etc.
3
7. Immediately before removing the protective material
from the leads of a replacement ES device, touch the
protective material to the chassis or circuit assembly
into which the device will be installed.
Caution : Be sure no power is applied to the chassis or
circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged
replacement ES devices. (Normally harmless motion
such as the brushing together of your clothes fabric or the
lifting of your foot from a carpeted floor can generate
static electricity sufficient to damage an ES device.)
OVERALL BLACK DIAGRAM
XS100
XS103
SPSP+
LIM
GND
SLED+
SLED-
XS102
GND
CLOSE
GND
OPEN
UNLOD
LOAD
TO PICK UP
MECHANISM
CHASSIS
SERVO
& TRAY
DRIVER
BA5954
& BA6208
RF AMP
D1890
SERVO & DVD
PROCESSOR
D1870
TO PICK UP
MECHANISM
CHASSIS
F-F+T+T-NCBAEGNDVCVCCFDCCD/DVDNC(CD-LD)
TC4W53
HCUO4
27MHz
ATAPI
INTERFACE
VR-CD
VR-DVDMDLD-CD
AVCC
27MHz
16M SDRAM*2
MPEG-2
DECODER
VS2811
LD-DVD
GND
AUDIO DATA
VIDEO
ENCODER
CS4955
AUDIO DAC
PCM1723
&PCM1720
CHROMA
RED/AGND
LUMA
BLUE/AGND
CVBS2
VGND
GREEN/CVBS1
VGND
12V
GND
SPDIF
5V
ZERO
AGD
CEN
AGD
R-S
AGND
WOOF
AGD
L-S
AGD
L
AGD
R
XS107
RMC
FD ATA
FCS
FCLK
GND
3.5V
3.5V
24V
Vcc
12V
POWER
NC
NC
TO CONTROL ASSY
CONTROL
BUS
CPU
D1850
12V
POWER5V12V8VVcc
4M DRAM
3.3V
GND
GND
GND
24V
3.5V
3.5V
XS106
TO POWER
SUPPLY ASSY
EEPROM
24C01
XS109
TO OUTPUT ASSY
4M ROM
29F040
THE BUS OF THE DATA
CONTROL SIGNAL
IC INTRODUCTION
D1890 PIN ASSIGNMENTS
Pin Numbers PIN NAME Type Description
QFP100 and LQFP100
RF Flag Interface
13 DEFECT Digital Output Flag of bad data output status
RF SIO interface
14 SLCK Digital Input RF serial clock input
15 SDEN Digital Input RF serial data enable
16 SDATA Digital IO RF serial data IO
11 RST Digital input Reset (active high)
12 XCK16M Digital input 16.9MHz for verification
RF
40 DVDA Analog input DVD RF signal input A
41 DVDB Analog Input DVD RF signal input B
42 DVDC Analog Input DVD RF signal input C
43 DVDD Analog Input DVD RF signal input D
38 DVDRFIN Analog Input DVD RF signal input RFIN
39 DVDRFIP Analog Input DVD RF signal input RFIP
53 CDA Analog Input CD RF signal input A
54 CDB Analog Input CD RF signal input B
55 CDC Analog Input CD RF signal input C
56 CDD Analog Input CD RF signal input D
61 OSP Analog Offset cancellation capacitor connecting
60 OSN Analog Offset cancellation capacitor connecting
86 RFOP Analog output RF positive output
85 RFON Analog output RF negative output
59 RFGC Analog RF VGA control
TRACKING ERROR
88 DPFN Analog DPD amplifier negative input
87 DPFO Analog DPD amplifier output
23 IR Analog DPD reference resister connecting
17 DPDMUTE Digital input DPD mute control input
83 TNI Analog Input 3 beam satellite PD signal input
82 TPI Analog Input 3 beam satellite PD signal input
97 TEO Analog Output Tracking error output
FOCUSING ERROR & RF LEVEL & CENTRAL SERVO SIGNAL
64 CDFNI Analog Input CD focusing error negative input
65 CDFPI Analog Input CD focusing error positive input
44 DVDFNI Analog input DVD focusing error negative input
45 DVDFPI Analog input DVD focusing error positive input
95 FEO Analog Output Focusing error output
96 FEONI Analog Input Focusing error amplifier negative input
93 FLVL Analog Output RF level output
5
Pin Numbers PIN NAME Type Description
94 FLVLNI Analog input RF level amplifier negative input
69 CDCSNI Analog input CD central servo signal negative input
70 CDCSPI Analog input CD central servo signal positive input
46 DVDCSNI Analog input DVD central servo signal negative input
47 DVDCSPI Analog input DVD central servo signal positive input
2 CSO Analog output Central servo signal output
3 CSONI Analog input Central servo amplifier negative input
ALPC
80 MDI1 Analog Input Laser power monitor input
81 LDO1 Analog Output Laser driver output
51 MDI2 Analog Input Laser power monitor input
52 LDO2 Analog Output Laser driver output
RF RIPPLE
8 CRTP Analog RF top envelop filter capacitor connecting
9 CRTPLP Analog Defect level filter capacitor connecting
7 HRFRP Analog output High frequency RF ripple output
6 LRFRP Analog output Low frequency RF ripple output
POWER
24,25,30,34,62,63 AVDD Power RF power
21,22,28,37,57,58 AGND GND GND
89,90 SVDD Power Servo analog power
98,99 SGND GND GND
4,5 VDD Power Digital power
18,19 GND GND GND
REFERENCE VOLTAGE
92 VREFO Analog output Reference voltage 2.0V
91 V2REFO Analog output Reference voltage 4.0V
ALPC TRIMMING
32 TM1 Analog input Trimming pin for ALPC1
33 TM2 Analog input Trimming pin for ALPC1
35 TM3 Analog input Trimming pin for ALPC2
36 TM4 Analog input Trimming pin for ALPC2
HIGH SPEED TRACK COUNTING
1 TRLP Analog Low-pass filter capacitor connecting
100 TRLPA Analog Low-pass filter capacitor connecting
10 HTRC Digital output High speed track counting digital output
FOR MONITOR ONLY
26 MON Analog output
27 MOP Analog output
31 VCON Analog output
20 HTRCMPH Digital output
84 HTE Analog output
6
D1890 BLOCK DIAGRAM
7
D1870 PIN ASSIGNMENTS
Pin Numbers Pin NAME Type Description
RG data PLL interface
11 PLLVDD Power Power for data PLL and related analog circuitry.
10 JITFN Analog Input The negative input terminal of operation amplifier for RF jitter meter.
9 JITFO Analog Output The output terminal of RF jitter meter.
Phase comparator output. Output the phase difference of EFM and Pck4m.
8 PDO Analog Output
7 IREF Analog Input
6 LPFN Analog Input The negative input terminal of loop filter amplifier.
5 LPFO Analog Output The output of loop filter amplifier.
4 LPIN Analog Input The input of the low pass filter.
3 LPIO Analog Output The output of the low pass filter.
2 PLLVSS Ground Ground pin for data PLL and related analog circuitry.
1 VBDPLL Analog Output Reference voltage.
176 RFIN Analog Input The negative input terminal of RF differential signal.
175 RFIP Analog Input The positive input terminal of RF differential signal.
174 RFDSLV Analog Output RF data slicer level output.
173 SCO Analog Output Analog slicer current output.
Signal Amplifier Interface
172 ADCVDD Power Power pin for ADC circuitry.
171 HRFZC Analog Input High frequency RF ripple zero crossing input or photo interrupt pulse input.
170 RFRPSLV Analog Output RF ripple slice level output.
169 RFP Analog Input RF ripple detect input.
168 RFLEVEL Analog Input Sub beam add input or RF level input.
167 FEI Analog Input Focus error input.
166 TEI Analog Input Tracking error input.
165 TEZU Analog Input Tracking error zero crossing input.
164 TEZISLV Analog Input Tracking error zero crossing low pass input.
163 ADIN Analog Input General A/D input.
162 ADCVSS Ground Ground pin for ADC circuitry.
Motor and Actuator Drive Interface
161 PDMVSS Ground Ground for PDM Circuitry.
160 PWM2VREF Analog Input A reference voltage input for PWM circuitry. The typical value is 4.0V.
159 PWMVREF Analog Input A reference voltage input for PWM circuitry. The typical value is 2.0V.
158 PDMVDD Power Power for PDM circuitry.
12 FOO Analog Output Focus servo output. PDM output of focus servo compensator.
13 TRO Analog Output Tracking servo output. PDM output of tracking servo compensator.
14 PWMOUT1 Analog Output
15 PWMOUT2 Analog Output
17 DMO Analog Output Disk motor control output. PWM output.
18 FMO Analog Output
19
20 FG
22 TRCLOSE TTL Output
23 ENDM TTL Output Enable/disable disk motor. A logical high enables disk motor.
Panel Interface
FROPENPW
M
Analog Output
TTL Schmitt
Input 50K pull up
Sink or sour ce a constant c urrent to loop filt er over this pin w hen phase
difference occurs. Otherwise, this pin is high impedance.
Current reference input. It generates reference current for data PLL.
Connect an external 15K resistor to this pin and PLLVSS.
1
st General multi-level PW M output. Th e number of output lev els is set
with DSP command. It is used to control step motor.
2
nd Gener al multi-level PW M output. Th e number of ou tput level is
selected DSP command.
Disk motor control. 3-level PWM output. It is used only f or DC motor, but it
is corporate with the pin PWMOUT1 to control step motor. If the internal
DC_FMO is positive, the FMO output lags 90
the FMO output leads 90
Tray open control output.
It generates PWM output for TRWMEN
TRWMEN
Motor Hall sensor input.
Tray close output.
It provides a clock out to the micro controller.
27hRW2
=0.
than PWMOUT1.
than PWMOUT1, otherwise
=0 or digital out put for
27hRW2
8
Pin Numbers Pin NAME Type Description
24 LED TTL Output LED control output.
25 PLY#/PAU#
26 EJ/STOP#
27 LIMIT#
28 TRAYOUT#
29 TRAYIN#
Micro controller Interface
30 URST TTL Output
31 UWR#
32 URD#
33 UCS1
34 UCS2
36 UALE
37-43,46 UAD
47 UINT#
Crystal Interface & DRAM clock Interface
44 DMVSS Ground Ground pin for DRAM clock circuitry.
45 DMVDD Power Power pin for DRAM clock circuitry.
48 XTALI Input Crystal input. The working frequency in 33.8688MHz.
49 XTALO Output Crystal output.
Memory Interface
50 DQM TTL Output
51 BA1 TTL Output
52 BA0 TTL Output
53 CKE TTL Output
54 CLK TTL Output SDRAM clock
55-56 RA[11:10] TTL Output
58-64,66-6
7,69
70 RAS# TTL Output RAM row address strobe, low active
71 ROE# TTL Output
RA[9:0] TTL Output RAM address bus
TTL Input
50K pull up
TTL Input
50K pull up
TTL Input
50K pull up
TTL Input
50K pull up
TTL Input
50K pull up
TTL Schmitt
Input 50K pull up
TTL Schmitt
Input 50K pull up
TTL I/O
50K pull up
TTL I/O
50K pull up
TTL I/O
with Schmitt
Input
50K pull up
TTL I/O
50K pull up
TTL Output
Open drain
Play/pause key input, active low.
Eject, stop key input, active low.
Sledge inner limit input, active low.
Tray_is_out input. A logical low indicates the tray is out. Feedback flag
from tray connector.
Tray_is_in input. A logical low indicates the tray is in. Feedback flag from
tray connector.
Power-on reset output for external devices, active high.
If the flash mode is used, the micro controller must be the kind of
multiplexed address/data mode and its output pins must be at tri-state.
Otherwise, the flash mode cannot be used.
Micro controller write strobe, active low.
Micro controller read strobe, active low.
For non flash mode cycle: register bank select control 1, input from micro
controller.
For flash mode cycle: flash ROM address FLASH_ADR14.
For non flash mode cycle: register bank select control 2, input from micro
controller.
For flash mode cycle: flash ROM address FLASH_ADR15.
For non fl ash mode c ycle: address latch en able, high active in put from
micro controller.
For flash mode cycle: address latch enable, high active output to control
external 373.
For non flash mode cycle: micro control address/data Bus.
For flash mode cycle: flash ROM address/data bus.
FLASH_ADR[7:0]/FLASH_D[7:0]. The FLASH_ADR[7:0] is latched in the
external 373.
Micro controller Interrupt, low active.
For non flash mode: SDRAM output Mask.
For flash mode: flash ROM address FLASH_ADR13.
For non flash mode: SDRAM bank address 1
For flash mode: flash ROM address FLASH_ADR12.
For non flash mode: SDRAM bank address 0
For flash mode: flash ROM address FLASH_ADR11.
For non flash mode: SDRAM clock enable.
For flash mode: flash ROM address FLASH_ADR10.
For non flash mode: DRAM address bus RA[11:10]
For flash mode: flash ROM address FLASH_ADR[9:8]
RAM output enable, low active.
It must be pulled with 20K resister if flash mode is used.
9
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