NAD M-5-CAH Service manual
SERVICE MANUAL
SERVICE MANUAL
MODEL : M5 C/AH
© NAD 2006
NAD ELECTRONICS INTERNATIONAL
TORONTO
CD/SACD PLAYER
M5 C/AH
SERVICE MANUAL
M5 C/AH
M5 C/AH
CD/SACD PLAYER
CD/SACD PLAYER
CONTENTS
SECTION 1 SUMMARY
SECTION 3 ELECTRICAL
SECTION 2 CABINET & MAIN CHASSIS
SECTION 4 MECHANISM
SECTION 5 REPLACEMENT PARTS LIST
SECTION 1 . . . .SUMMARY
SECTION 2 . . . .CABINET & MAIN CHASSIS
SECTION 3 . . . .ELECTRICAL
SECTION 4 . . . .MECHANISM
SECTION 5 . . . .REPLACEMENT PARTS LIST
SECTION 1 SUMMARY
CONTENTS
PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO PRODUCTS
SERVICING PRECAUTIONS ........................................................................... 1-3
• General Servicing Precautions
• Insulation Checking Prodedure
• Electrostatically Sensitive Devices
SPECIFICATIONS
...........................................................................................
............. 1-2
1-4
1-1
PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIO PRODUCTS
CAUTION : DO NOT ATTEMPT TO MODIFY THIS
PRODUCT IN ANY WAY, 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. LINESHOCK.
SAFETY CHECKS
AFTER THE ORIGINAL SERVICE PROBLEM HAS
BEEN CORRCTED. A CHECK SHOULD BE MADE OF
THE FOLLOWING.
SUBJECT : FIRE & SHOCK HAZARD
1.BE SURE THAT ALL COMPONENTS ARE POSI-
TIONED IN SUCH A WAY AS TO AVOID POSSIBILITY
OF ADJACENT COMPONENT SHORTS.THIS IS ESPECIALLY IMPORTANT ON THOSE MODULES WHICH
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 HAVEBEEN 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 OF DAMAGE
OR DETERIORATION TO PARTS AND COMPONENTS.
FOR FRAYED LEADS, DAMAGED INSULATION
(INCLUDING A.C. CORD). AND REPLACE IF NECES-
5. NO LEAD OR COMPONENT SHOULD TOUCH A
RECIVING TUBE OR A RESISTOR RATED AT 1 WATT
OR MORE. LEAD TENSION AROUND PROTRUNING
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 USE AN A.C. VOLTMETER, HAVING 5000 OHMS PER VOLT OR MORE SENSITIVITY, IN THE FOLLOWING MANNER; CONNECT A
1500 OHM 10 WATT RESISTOR, PARALLELED BY A
.15 MFD. 150.V 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 1500OHM
RESISTOR AND .15 MFD CAPACITOR. REVERSE THE
A.C. PLUG AND REPEAT A.C. 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.
A.C. VOLTMETER
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.
1-2
SERVICING PRECAUTIONS
CAUTION
this service data and its supplements and addends, 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 publication,
always follow the safety precautions.
Remember Safety First:
General Servicing Precautions
1. Always unplug the Stereo amplifier AC power cord from the
AC power source before:
(1) Removing or reinstalling any component, circuit board,
(2) Disconnecting or reconnecting any internal electrical
(3) Connecting a test substitute in parallel with an electrolytic
Caution: A wrong part substitute or incorrect polarity
2. Do not spray chemicals on or near this Stereo amplifier 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,
cottontipped 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
which instruments covered by this service manual might be
equipped.
5. Do not apply AC power to this Stereo amplifier and/or any
of its electrical assemblies unless all solid-state device heat
sinks are correctly installed.
6. Always connect test instrument ground lead to the
appropriate ground before connecting the test instrument
positive lead. Always remove the test instrument ground lead
last.
Insulation Checking Procedure
Disconnect the attachment plug from 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 1 M-ohm.
Note 1: Accessible Conductive Parts including Metal panels,
Input terminals, Earphone jacks, etc.
: Before servicing the Stereo amplifier covered by
module, or any other assembly.
plug or other electrical connection.
capacitor.
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 handing 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 reason 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 foil, to prevent electrostatic charge buildup or
exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder
ES devices.
4. Use only an antistatic 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 freonpropelled 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).
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 handing 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.)
1-3
SPECIFICATIONS
•GENERAL
Power requirements: AC 100-240 V , 50/60 Hz
Power consumption: 45W
Dimensions (Approx.): 435 x 100 x 300 mm (W xHxD)without foot
Weight (Approx.): 8.6 kg
Operating temperature: 5 °C to 35 °C (41 °F to 95 °F)
Operating humidity: 5 % to 90 %
• OUTPUTS
VIDEO OUT: 1 Vp-p 75 sync negative, RCA jack x 1
AUDIO OUT: 2.0 Vrms (1 KHz, 0 dB),
60 &+8QEDODQFH%DODQFH
PXWL&+
RCA jack (L, R) x 1/ XLR jack (L, R) x 1/ RCA jack(6-ch) x 1
DIGITAL OUT (COAXIAL): 0.5 V (p-p), 75 RCA jack x 2SWLFDO[ 1,AES/EBU x 1
• System
Laser:
6LJQDO system:
Frequency response:
SLJQDO-to-noise ratio(A-W): More than 110 dB (2CH ANALOG OUT )
Harmonic distortion: Less than 0.005%
Dynamic range: More than
• Accessories
Video FDEOe (1), Audio FDEOe (1), Remote controO (1), Batteries (2)
Semiconductor ODVer, ZDYHOHQgth 650 nm
PAL / PAL 6 0 / NTSC
SACD:8Hzto50kHz
CD: 8 Hz to 20 kHz
More than 100 dB (muti-CH ANALOG OUT )
95dB (CD/SACD muti-ch)
More than 105dB (SACD 2-ch)
1-4
SECTION 2 CABINET & MAIN CHASSIS
CONTENTS
EXPLODED VIEWS................................................................................................................ 2-2
1. Cabinet and Main Frame Section ................................................................................ 2-2,3
2. Exploded view parts list......
3. Packing accessory section............................................................................................2-5
.................................................................................................. 2-4
2-1
EXPLODED VIEWS
1.Cabinet and main frame section
S021
T003
T002
C009
C008
S013
S010
C007
C006
S012
S014
P001
C014
C013
C010
C011
C012
S015
C005
T001
S011
R003
C017
C016
R002
S019
S016
C004
C003
C016
C015
RS01
S008
S018
S017
A001
S020
A002
A003
A004
A003
A005
S008
S012
F007
F008
F003
F009
F010
S001
F002
S001
F001
FP01
F011
F004
FP02
F012
S002
F005
FP03
F006
F013
F014
S003
S004
S008
C016
F016
F015
S005
S008
F018
F017
S006
S007
R001
C002
C001
S010
2-2
S009
2-3
2.EXPLODED VIEW PARTS LIST
REF.NO. PART NO. DESCRIPTION Qty. REF.NO. PART NO. DESCRIPTION Qty.
New PN 67-051002-1
C002 01-50501-00 Decode Board 1 T002 86-018002-1 Expanded Rubber 2
C003 01-50502-00 Audio Board 1 T003 76-046001-0 Screw Washer 4
C004 01-50505-00 RS232 Board 1
C005 18-55017-20 R Type Transformer(C Version) 1
18-55017-10 R Type Transformer(AH Version) 2tekcarB0-010010-6610SR1
C006 68-051002-1 Shielding Box(down) 1
C008 68-051001-1 Shielding Box(up) 1
C009 85-051001-0 Snap Bushing 2 A003 01-50506-01 Module Board 4
C010 85-051002-0 PCB Spacer 3 A004 78-048004-0 Insulated Cushion 8
C017 69-051004-0 Loader Clamp 2 2
C018 68-051003-0 Loader Cover 1
C019 83-043001-0 Foot Assembly 4
F003 76-051001-0
F004 77-051001-1 Cursor Holder 1 S005 61-224512-1 Hex Head Screw (M4X12) 6
F005 87-048002-0 Input Button Pad 4 S006 61-224508-1 Hex Head Screw (M4X8) 7
F006 87-048003-0 Power Button Pad 2 S007 61-063106-0 Self Taping Screw (STF3X6) 4
F007 86-046001-0 Led Lens Gum 1 S008 61-023106-2 Self Taping Screw (STB3X6) 17
F009 70-048013-0 Power Button 1
F010 92-048001-0 Spring for Button 6 S011 61-023506-1 Machine Screw(MB3×6-Ni) 4
F012 70-051006-1 Stop-Menu Button 2
F016 86-046002-0 Fascia Padding 2
F018 86-010004-0 3mm Rubber Pad 3 S019 61-073108-0 Self Taping Screw (STO3X8) 2
R001 67-051003-0 Rear Panel (C Version) 1 S021 61-246508-0 Machine Screw (MB6X8-Cr) 4
67-051005-0 Rear Panel (AH Version) 1
R003 11-01101-03 Rocker Switch 1
VFD window 1 S004 61-023616-0 Self Taping Screw (TBBT3×16) 2
A002 66-048001-0 Module Tr. Braccket 4
1pmalCeniL0-200150-57210C
1rooDDVD1-100150-07410C
FP03 75-051001-0 Display Bracket 1
S001 61-023206-1 Self Taping Screw (BTB3X6) 7
(rehsaW0-503011-36300S1rosruCgniR0-200150-07200F 3× 7×0.5 2
S010 61-373506-0 Machine Screw (MB3X6W.S-Ni) 11
S013 61-023106-1 Self Taping Screw (STB3X6-Ni) 6
S017 61-062206-1 Self Taping Screw (BTF2×6) 8
S020 61-023208-0 Self Taping Screw (BTB3X8) 11
1telnICA20-20070-71200R
1revoCpoT0-200150-76100T1sissahC0-200760-76100C
2revoCeludoM0-100840-07100A1draoBUSP00-30505-10700C
2esaBeludoM1-100760-07500A4recapS2-200150-96110C
2knistaeH0-500150-07100P2pmalCrooDDVD0-200150-66310C
1tekcarBRI0-110150-5610PF1redaoL00-63880-73510C
1DFV00-95555-3220PF41pmalCredaoL0-300150-96610C
2)iN-6X5.2BM(wercSenihcaM6-605220-16200S12aicsaF0-400150-07100F
4)8X4BTS(wercSgnipaTfleS1-801420-16900S1sneLdeL0-100800-67800F
6)8X3BM(wercSenihcaM0-805320-16210S2nottuBtupnI1-210840-07110F
2)3M(tuN2-203010-26410S1nottuBretnE0-700150-07310F
2)iN-4X3BM(wercSenihcaM1-405320-36510S1PPF00-40555-10410F
4)8X3WPTS(wercSgnipaTfleS0-801380-16610S11aicsaF1-300160-07510F
4)8×2FTS(wercSgnipaTfleS1-801260-16810S1aicsafbuS1-100150-76710F
2-4
3.PACKING ACCESSORY SECTION
Batteries
REMOCON
Accessory Box
AC Cord
Audio and Video Cord
Polyfoam(up)
Polyfoam(down)
Gift Box
Shipping Box
2-5
SECTION 3 ELECTRICAL
CONTENTS
ELECTRICAL TROUBLESHOOTING GUIDE
1. Power check flow………………………………………………………………………3-2
2. System operation flow…………………………………………………………………3-3
3. Test & debug flow……………………………………………………………………... 3-4,9
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGING
1. System 27MHz clock,reset,flash R/W signal………………………………………..3-10
2. SDRAM clock…………………………………………………………………………..3-11
3. TRAY OPEN/CLOSE signal…………………………………………………………..3-11
4. SLED control related signal(NO disc control)……………………………………....3-12
5. LENS control related signal(NO disc control)……………………………………… 3-13
6. FOCUS control related signal(NO disc control)…………………………………… 3-14
7. SPINDLE control WAVEFORM……………………………………………………… 3-15
8. FOCUS ON WAVEFORM……………………………………………………………. 3-16
9. RF WAVEFORM…………………………………………………………….…………3-17
10. ES6168F Audio optical and coaxialoutput(SPDIF)………………………………. 3-17
11. ES6168F Video output to Audio DAC……………………………………….……..3-18
12. Audio output(1KHz odB)……………………………………………………….…… 3-18
BLOCK DIAGRAMS
1. Overall block diagram………………………………………………………………… 3-19
2. Power(SMPS) block diagram…………………………………………………………3-20
3. Servo block diagram………………………………………………………………….. 3-21
CIRCUIT DIAGRAMS
1. Power(SMPS) circuit diagram……………………………………………………….. 3-22
2. Decode board-ES6168 section……………………………………………………....3-23,24
3. Decode board-DSP section………………………………………………………......3-25,26
4. Decode board-H-POWER & DRIVER section……………………………………...
5. Decode board-RF section……………………………………………………………. 3-28
6. Decode board-CONNECT AND 232 section…………………………………........ 3-29
7. Audio board…………………………………………………………………............... 3-30,31
8. 232 AND AMP module board………………………………………………………...3-32
9. Front panel board…………………………………………………………………….....3-33
CIRCUIT VOLTAGE CHARGE
PRINT CIRCUIT BOARD DIAGRAM
1. Decode board………………………………………………………………….............3-42,43
2. Audio board………………………………………………………………………….....3-44,45
3. SMPS board………………………………………………………………………....... 3-46
4. Front panel board……………………………………………………………………...3-47,48
5. RS232 board……………………………………………………………………….......3-47,48
6. AMP module board…………………………………………………………………… 3-47,48
………………………………….…………………........3-34,41
3-27
3-1
ELECTRICAL TROUBLESHOOTING GUIDE
1.
Power check flow
Digital circuit supply
A.
No VF+
Is 5VD section working?
YES
Check D910
No
Replace D910
NO
No 5VD
Check FH900
Is there a AC voltage at
one terminal of RT900?
YES
Is there a DC voltage At
(+) terminal of B900?
YES
B.
No 5VS
NO
Is 5VD section working?
YES
NO
Is 5VD present at input
of U911?
YES
Replace U911.
YES
NO
NO
Replace RT900.
YES
Replace B900.
Analog circuit supply
A.
No +/-12V
Is +/-VCCA works well?
YES
Check U605 U606
Replace U605/U606
NO
Replace U900.
Is 5VD right
Yes
Check Q619 Q621 Q623
Yes
Check Transformer
3-2
B.
No 5VA
NO
Is VM works well
YES
NO
Check U658
YES
Replace U658.
2. System operation flow
Power On
1. ES6168 initializes SERVO & the other DSPs
Show LOGO
YES
Tray Closed?
NO
Tray Close to Closed position
SLED at Inner
Side ?
NO
SLED Moves to Inner Positi on
1. Judge whether have disc and disc type
2. Jump to related disc reading procedure
Reci eve
OPEN/CLOSE
Key?
YES
YES
NO
1. Execute Pressed Key & IR Key
2. System operation Routine Loop
1. Stop Playback & Open Tray
2. Display tray open message & LOGO
NO
Receive
CLOSE Key?
YES
3-3
3. Test & debug flow
Switch on the Power switch
Check the AC Voltage on
Power PCB (110V or 220V)
YES
Press the power key on front panel
Is the DC Voltage
outputs OK?
(5V,3.3V,9V,±12V,5VA)
YES
Is 3.3V,1.8V and 2V DC
outputs normal on decode
PCB?
YES
NO
NO
NO
Check Fuse and connections
to AC inlet
Repair or Replace Power PCB
Replace R-core Transformer
Check the regulators or related diodes.
Insert the upgrade disc to update
the FLASH memory code.
Update FLASH
successfully?
YES
A
NO
1. Check 27MHz system clock.
2. Check system reset circuit.
3. Check FLASH R/W enable signal LOE#,WRLL.
4. Check servo related circuit.
5. Check FLASH Memory related circuit.
3-4
A
RESET or Power On.
Show LOGO?
NO
Flash Memory operates
properly?
YESYES
SDRAM works properly?
YES
ES6168
Video PINs outputs
properly?
YES
Have TV signal output?
YES
Check AV cable connection
to TV set.
NO
NO
NO
NO
Check connection lines between FLASH
& ES6168 and the FLASH access time
whether is suitable or not.
Check connection lines between
SDRAM & ES6168 and the SDRAM
is damaged.
Check the related ICs
Check the filtering circuit of
TV signal.
Does Tray move
inside when it is not
at closed position?
YES
B
NO NO
Normal OPEN_SW&
CLOSE_SW signals?
YES
Normal LDM1 &
LDM2 signal?
YES
Normal EJ+ & EJ-
signal?
YES
Check the cable connection
between decode PCB and loader.
NO
NO
3-5
Check the load OPEN & CLOSE
switch
Check the Tray control IO pins on
CXD1885 & FAN8042.
Check the Tray control amplifying
circuit on Motor driver.
B
Does
the SLED move
to inner side when it is at
outter position?
Do not put in disc and tray
close.
Motor Driver
XFTSMUTE
Pin is High?
SEYSEY
Is SLED DC Level lower
than 1.65V?
YES
SL+ and SL- output
properly?
YES
Check the cable connection with
MECHA.
NO
NO
ONON
Check the connection line of
XFTSMUTE signal.
Check the related circuit of
SLED.
Check the amp circuit on motor
driver.
Optical Lens has
movements for searching
Focus?
C
Proper FSCON outputs
to motor driver?
YESYES
Proper F+ & F- outputs?
YES
Check cable connect on with
pick-up head.
3-6
NO
ONON
Check FSCON connection on
CXD1885Q and motor dirver.
Check the amp circuit on motor
dirver.
C
Laser turns on when
reading disc?
YES
YES
Disc ID is correct?
NO
NO
NO
DVDLD or CDLD
output properly?
YES
Collector voltage of
power transistor is OK?
YES
Check cable connection between
transistor ouput and pick-up
head.
fforesaL?nicsidtuP
Proper RFSIN signal
on CXD1881?
YES
NO
NO
NO
Check the laser power circuit
on CXD1881 and connecting to
power transistor.
Check the related circuit on
laser power transistor
Check the related circuit
on CXD1881 RFSIN signal.
YES
Does spindle rotate?
YES
D
NO
Check DVDLD & CDLD signal
Proper SPWM signal on
CXD1885Q
YES
SP+ & SP- output
properly?
YES
Check the cable connection
between spindle and main PCBA.
NO
NO
Check SPWM related
circuit on CXD1885Q.
Check the spindle control
amp circuit of motor
driver.
3-7
D
YES
Focus ON OK?
YES
Track On OK?
YES
NO NO
NO
Proper signals on
A,B,C,D of CXD1881
YES
Check FEO signal
on CXD1881
YES
Check FSCON signal
on CXD1885Q
Normal TEO Signal on
CXD1881 ?
YES
Properly TSCON
signal on CXD1885Q?
YES
NO
NO
NO
Check connections between
CXD1881 and pick-up head.
Check the FSCON connection on
CXD1885Q and motor driver.
Check the related
circuit on CXD1881
Check the TSCON
connection on CXD1885Q
and motor dirver.
Disc is play ?
YES
E
NO
T+ & T- output
properly?
YES
Check cable connection on
pick-up head.
Check RF-OP & RFAC signal waveform.
NO
3-8
Check the tracking control
amp circuit on motor
driver.
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