Panasonic SC-TM760 User manual

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CDCD
AUXAUX
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AUDIO SYSTAUDIO SYSTEEMM
N2QAHB000058N2QAHB000058
INTROIN TRO
S.SOUND EQS.SOUND EQ
S.WOOFERS.WOOFER S.SRNDS.SRND MIX2CHMIX2CH
SOUND EQSOUND EQ MMUTUT INGING
ENTERENTERMARKERMARKER
TITLETITLE
SEARCHSEARCH
PROGRAMPROGRAM
CH SELCH SEL
REPE ATREPE AT
PLAY MO DEPLAY MOD E
ECHOECHO
KARAOKEKARAOKE
DISCDISC
C.FOCUSC.FOCUS
SPACESPACE
ABCABC DEFDEF
GHIGHI
TUVTUV WXYWXYZZPQRSPQRS
JKLJKL MNOMNO
SSLLEEPE EP CD DISPCD DISP DIMM ERDIMMER
AALLBUMBUM CURSORCURSOR
DELDEL
CLEARCLEAR
6CH DVD INPUT6CH DVD INPUT
TUNERTUNER
BBAANDND
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TAPETAPE
(El peso y las dimensiones son de un solo bafle)
Stereo System SC-TM760 Colour (S)... Silver Type
MODEL UNIT
SC-TM760 SA-TM760 Stereo
SB-TM760 Front Speaker
SB-TM760 SB-TM760
SA-TM760
Specifications
POTENCIA DE SALIDA (AMPLIFICADOR)
SC-TM760 Frontal (Alto) 110 W RCM por canal (3Ω) 1kHz, 10% DAT
(Bajo) 110 W RCM por canal (3Ω) 100Hz, 10% DAT
UNIDAD PRINCIPAL
POTENCIA DE SALIDA: 5200 W (P.M.P.O.)
270 W
127 V ca ±10% 60 Hz
250 mV
520 - 1710 kHz (paso de 10 kHz)
87.9 - 107.9 MHz (paso de 0,2 MHz)
87.5 - 108.0 MHz (paso de 0,1 MHz)
CONSUMO DE POTENCIA:
ALIMENTACION:
SENSIBILIDAD AUX:
100 mV
SENSIBILIDAD MUSIC PORT:
RANGO DE SINTONIA AM:
RANGO DE SINTONIA FM:
DIMENSIONES (b x h x l)
PESO:
SA-TM760
ESPECIFICACIONES POR CADA BAFLE
FRONTAL
Bocina Super Woofer
Bocina Woofer
Bocina Tweeter
Super Tweeter
Alto 3 Ω, Bajo 3 Ω
SB-TM760
20 cm
12 cm
6 cm
IMPEDANCIA DE ENTRADA
Dimensiones (b x h x l) 250 mm x 429 mm x 318.5 mm
6.2 kg aprox.
5.4 kg aprox.
250 mm x 330 mm x 348 mm
Peso

1 Safety Precautions
1.1. General Guidelines
1.When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
2.After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
3.After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
1.1.1. Leakage Current Cold Check
1.Unplug the AC cord and connect a jumper between the two prongs on the plug.
2.Measure the resistance value, with an ohmmeter, between the jumpered AC plug and each exposed metallic cabinet part on
the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the
chassis, the reading should be between 1MΩand 5.2MΩ.
When the exposed metal does not have a return path to the chassis, the reading must be .
Figure 1
1.1.2. Leakage Current Hot Check
(See Figure 1)
1.Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2.Connect a 1.5kΩ, 10 watts resistor, in parallel with a 0.15µF capacitor, between each exposed metallic part on the set and a
good earth ground such as a water pipe, as shown in Figure 1.
3.Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.
4.Check each exposed metallic part, and measure the voltage at each point.
5.Reverse the AC plug in the AC outlet and repeat each of the above measurements.
6.The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may
be used to make the hot checks, leakage current must not exceed 1/2 milliamp. In case a measurement is out of the limits
specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to
the customer.
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1.2. Safety Precaution for AC Power Supply Cord (For GS only)
1.3. Before Use (For GS/GCS/GCT only)
Be sure to disconnect the mains cord before adjusting the voltage selector.
Use a minus(-) screwdriver to set the voltage selector (on the rear panel) to the voltage setting for the area in which the unit will
be used. (If the power supply in your area is 117V or 127V, set to the “127V” position.)
Note that this unit will be seriously damaged if this setting is not made correctly. (There is no voltage selector for some countries,
the correct voltage is already set.)
1.4. Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C2254, C2256, C2288, C2289, C2632, C2721, C2725, C2811, C2815,
C2817, C5512, C5513, C5514, C5712, C5713, C5715, C5718, C5790, C5805, C5806, C5807, C5914, C5916, C5917, C5929,
C5930, C5971 and C5977 through a 10Ω, 5W resistor to ground.
DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
Current consumption at AC 110 ~ 127V, 50 / 60 Hz & AC 220 ~ 240V, 50 / 60 Hz in NO SIGNAL (vol. min, at CD mode) should
be ~500mA. [For GCS/GS/GCT only]
Current consumption at AC 220 ~ 240V, 50 / 60 Hz in NO SIGNAL (vol. min, at CD mode) should be ~500mA . [For GC only]
1.5. Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
• No sound is heard when the power is turned on.
• Sound stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are
“shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below:
1.Turn off the power.
2.Determine the cause of the problem and correct it.
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3.Turn on the power once again after one minute.
Note :
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
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2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by 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 electro static discharge (ESD).
1.Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
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
aluminium foil, to prevent electrostatic charge build up or exposure of the assembly.
3.Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4.Use only an anti-static solder remover device. Some solder removal devices not classified as “anti-static (ESD protected)” can
generate electrical charge to damage ES devices.
5.Do not use freon-propelled chemicals. These can generate electrical charges 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, aluminium 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 body motions when handling unpackaged replacement ES devices. (Otherwise 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 (ESD) sufficient to
damage an ES device).
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3 Handling Precautions for Traverse Unit
The laser diode used inside optical pickup could be destroyed due to static electricity as a potential difference is caused by
electrostatic load discharged from clothes or human body. Handling the parts carefully to avoid electrostatic destruction during
repair.
3.1. Handling Optical Pickup
1.Do not impact on optical pickup as the unit structurally uses an extremely precise technology.
2.Short-circuit the flexible cable of optical pickup remove from the circuit board using a short-circuit pin or clip in order to prevent
laser diode from electrostatic destruction (Refer to Fig. 3.1 and Fig. 3.2)
3.Do not handle flexible cables forcibly as this may cause snapping. Handle the parts carefully (Refer to Fig. 3.1)
4.A new optical pickup is equipped with an anti-static flexible cable. After replacing and connecting to the flexible board, cut the
anti-static flexible cable. (Refer to Fig. 3.1)
Fig 3.1
3.2. Replacing Precautions for Optical Pickup Unit
CD/DVD Optical Pickup
The optical pickup by which part supply was carried out attaches the short clip to the flexible board for laser diode electrostatic
discharge damage prevention. Please remove the short clip and be sure to check that the short land is open, before connecting.
(Please remove solder, when the short land short-circuits.)
3.3. Grounding for Preventing Electrostatic Destruction
1.Human body grounding
Use the anti-static wrist strap to discharge the static electricity accumulated in your body. (Refer to Fig. 3.2)
2.Work place grounding
Place a conductive material (conductive sheet) or ironboard where optical pickup is placed. (Refer to Fig. 3.2)
Note :
Keep your clothes away from optical pickup as wrist strap does not release the static electricity charged in clothes.
Fig. 3.2
SA-VK950GC / SA-VK950GS / SA-VK950GCS / SA-VK950GC
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5 Warning
5.1. Service caution based on legal restrictions
5.1.1. General description about Lead Free Solder (PbF)
The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this
equipment in considering the globally environmental conservation.
The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin
(Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86°F) more than that
of the normal solder.
Definition of PCB Lead Free Solder being used
The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.
(See right figure)
Service caution for repair work using Lead Free Solder (PbF)
• The lead free solder has to be used when repairing the equipment for which the lead free solder is used.
(Definition: The letter of “PbF” is printed on the PCB using the lead free solder.)
• To put lead free solder, it should be well molten and mixed with the original lead free solder.
• Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC.
• Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt
the lead free solder.
• Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30
degrees C (662±86°F).
Recommended Lead Free Solder (Service Parts Route.)
• The following 3 types of lead free solder are available through the service parts route.
RFKZ03D01K-----------(0.3mm 100g Reel)
RFKZ06D01K-----------(0.6mm 100g Reel)
RFKZ10D01K-----------(1.0mm 100g Reel)
Note
* Ingredient: Tin (Sn), 96.5%, Silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%
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6 Accessories
Cable de alimentación de CA .......................... SJA168-1A
Antena interior
de FM .......................... RSA0007-L
Antena de cuadro
de AM .......................... ND1AAAA00002
Pilas para el mando a
distancia ...................... UM-3PA/T
Mando a distancia ........ N2QAHB000058
KM19201-01
Plug para RCA/ Jack 3.5 ........
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service manual SC-TM760

8 New Features
8.1. CRS1D Mechanism Overview
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· The mechanism has "CHANGE WHILE PLAY" function. It open other trays for disc exchanging while one tray is at PLAY
position performing recording or reproducing.
· The mechanism can quickly change all trays with "CHANGE ALL" function. All trays can be move to OPEN position with one
operation.
· There is no sensor to indicate presence of disc on any tray.
Hardware composition
· Below is the hardware components of the mechanism
Name Function
Open Switch (OPEN-SW) The switch is used to detect normal tray opening
The switch is used for detect tray being manually push/trigger when full open
Home Switch (HOME-SW) Is used to detect cam gear home position
Close Sensor (CLOSE-SENSOR) Used for normal single tray closing
Used to detect cam gear rotate to Play Driving position
Play Switch (PLAY-SW) Detect TRV clamping complete position
Stocking Switch (STOCK-SW) Detect tray completely transfer for play position to stocking position
UD Sensor (UD-SENSOR) Detect TRV vertical movement position
Top Switch (TOP-SW) Detect a default position of TRV vertical movement position
Driver IC To drive Motor
Motor Main driving source for changer
Plunger Switching the driving source from motor to:
1. Tray open/close
2. Drive tray to play/stock position and TRV vertical movement
Mechanism Operation
· This mechanism has the following state:
1. Driving of a tray to open/close
2. Up/down operation of a traverse performs a state changes of tray.
By using the plunger to lift/release of a switching gear, and the cam gear to lift/release the function gear the motor can be link
to several gear trains to perform various operations.
· The functions that can be perform in this mechanism are described as below:
Condition Explanation
Open current playing tray The state to change current playing disc. All tray will be open at once and current tray at PLAY position
will be expose.
Open All The state where all trays being driven to OPEN position. The disc can be taken in or out from tray to tray
by close tray one by one from top to bottom.
Stock The state where the trays are stored in STOCK position
Play The state where one of the tray 5 trays is being driven to PLAY position and clamped by traverse unit
Play & Open Tray-* The state where one of the tray is in playing position performing recording or reproducing, other trays can
be used (OPEN position) for disc exchanging without stopping the recording or reproducing process.
Change The state when one of the opened tray being driven from OPEN position to STOCK position and other
opened trays remain still at OPEN position.
Close All The state where all open trays will being driven from OPEN position to STOCK position, one by one from
top to bottom
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8.2. Music Port
With reference to page 31 of the operating instruction manual.
Condition Explanation
Change The state when one of the opened tray being driven from OPEN position to STOCK position and other
opened trays remain still at OPEN position.
Close All The state where all open trays will being driven from OPEN position to STOCK position, one by one from
top to bottom
Note: * represent tray number (from 1 ~ 5)
8.1.4. New CD Mechanism (CRS1D)
Note:
This service manual does not contain the following information for the mention CD/DVD Mechanism drive:
•• Schematic Diagram, Block Diagram and P.C.B. layout of CD/DVD Loading P.C.B.
•• Part List for individual parts of the mechanism.
•• Exploded View and Parts List for individual parts of the CD/DVD Mechanism drive.
Please refer to the original service manual (Order No. MD0603065A3) for the CD/DVD Mechanism Drive CRS1D.
AUX
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9 Self diagnosis and special mode setting
This unit is equipped with functions for checking and inspecting namely: Self-Diagnostic and Test Mode.
9.1. Special Mode Table
Item FL Display Key Operation
Mode Name Description Front Key
Self -Diagnostic
Mode
To enter into self
diagnostic checking for
main unit.
1. Select [
] for TAPE mode (Ensure no tape is
inserted).
2. Press and hold [ ]button for 3
seconds follow by [ ].
To exit, press button on
main unit or remote control.
CD Test Mode To enter into checking the
reliability of changer unit.
1. Select [ ] for CD mode.
2. Press and hold [ ] button for 3
seconds follow by [ ].
To exit, press button on
main unit or remote control.
CD Auto
Adjustment
To check the CD auto
adjustment result for
FLOCK, TLOCK and
CLVS.
In CD Test Mode:
1. Press [0] button on the remote control.
To exit, press button on
main unit or remote control.
CD Changer
Reliability Test
(CRS1)
To determine the
reliability of CD Changer
Unit.
(For more information,
refer to section 9.1.1)
In Self-Diagnostic Mode:
1. Select [ ] for CD mode.
2. Press [ ] button.
To exit, press button on
main unit or remote control.
(The tray will return to PLAY position and then
power off)
Doctor Mode To enter into Doctor
Mode for checking of
various items and
displaying EEPROM and
firmware version.
1.
2.
1. All segments will light up for 1 second.
2. The Check Sum of EEPROM and firmware
version will be display.
* ROM correction
** Firmware version No:
In any mode:
1. Press [ ] button on main unit
follow by [4] and [7] on remote control.
To exit, press [ENTER] button on remote
control or button on main
unit or remote control.
Cold Start To activate cold start
upon next AC power up.
In doctor mode:
1. Press [4] button on remote control.
To exit, press [ENTER] button on remote
control or button on main
unit or remote control.
Changer
Reliability Test
To check the function
operation of changer unit.
(For more information,
refer to 9.1.1)
In doctor mode:
1. Press [DISC] on remote control.
To exit, press [ENTER] button on remote
control or button on main
unit or remote control.
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Item FL Display Key Operation
Mode Name Description Front Key
FL Display Test To check the FL
segments display (All
segments will light up and
LED will blink at 0.5
second interval)
In doctor mode:
1. Press [DIMMER] button on remote control.
Tape Eject Test To check on the tape
eject function (For deck
1/2)
In doctor mode:
1. Press [PROGRAM] button on remote
control.
9.1.1. CD changer unit ageing test mode
Below is the process flow chart of ageing for the CD changer unit. (CRS1)
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10 Error Code Table
Self-Diagnosis Function (refer Section 10.3) provides information on any problems occuring for the unit and its respective
components by displaying the error codes. These error code such as U**, H** and F** are stored in memory and held unless it is
cleared.
The error code is automatically display after entering into self-diagnostic mode.
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The error code is automatically display after entering into self-diagnostic mode.
Error Code Diagnosis Contents Description of error Automatic FL Display Remarks
H01 Mode SW, plunger
and capstan motor
abnormal
For deck mechanism unit (For deck 1/2).
Press [ ] on main unit for
next error.
H02 Rec INH SW
abnormal
For deck mechanism unit (For deck 2).
Press [ ] on main unit for
next error.
H03 HALF SW abnormal For deck mechanism unit (For deck 1/2).
Press [ ] on main unit for
next error.
F01
F02
Reel pulse abnormal
TPS error
For deck mechanism unit (For deck 1/2).
Press [ ] on main unit for
next error.
F15 RESET SW
abnormal
REST SW: ON is not
detected within the
specified time.
For CD unit (For Traverse).
Press [ ] on main unit for
next error.
F26 Transmission error
between CD Servo
LSI IC and
microprocessor IC
When set to CD mode,
the sense signal does
not turn “Low”, a fail safe
time after system
command transmission
is sent.
For CD unit (For Traverse).
Press [ ] on main unit for
next error.
F61 Power Amp IC output
abnormal
Upon power on,
PCONT=HIGH,
DCDET=L after checking
LSI.
For power.
Press [ ] on main unit for
next error.
IHMS Cam gear
abnormality
Cam gear does not
rotate to “HOME”
position.
For CD changer unit (CRS1).
Press [SINGLE CHANGE] on main unit
for next error.
ICSL Cam gear/gear units
abnormal
Cam gear does not
rotate to “PLAY” driving
position and hence does
not drive playing tray to
“STOCK” position.
For CD changer unit (CRS1).
Press [SINGLE CHANGE] on main unit
for next error.
ISTK Drive rack/gear
assembly abnormal
The tray drive rack does
not move to “STOCK”
position. (Tray does not
move to “STOCK”
position)
For CD changer unit (CRS1).
Press [SINGLE CHANGE] on main unit
for next error.
IPLY Drive rack/gear
assembly abnormal
The tray drive rack does
not move to “PLAY”
position. (Tray does not
move to “PLAY” position)
For CD changer unit (CRS1).
Press [SINGLE CHANGE] on main unit
for next error.
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Error Code Diagnosis Contents Description of error Automatic FL Display Remarks
ITOP UD assembly UD Rack does not move
to front direction. This
lead to UD base not
raise to top position.
For CD changer unit (CRS1).
Press [SINGLE CHANGE] on main unit
for next error.
IUDS UD assembly After TOP SW is
detected, UD rack does
not move into tray 1
position.
For CD changer unit (CRS1).
Press [SINGLE CHANGE] on main unit
for next error.
HOME Cam gear/gear
assembly abnormal
Cam gear does not
move to “HOME”
position under following
conditions
1. After tray is load to
“PLAY” position.
2. After tray is unload
to “STOCK” position.
For CD changer unit (CRS1).
Press [SINGLE CHANGE] on main unit
for next error.
LOAD Tray drive assembly
abnormal
Tray unit does not move
from “STOCK” to “PLAY”
position
For CD changer unit (CRS1).
Press [SINGLE CHANGE] on main unit
for next error.
PDRV Cam gear/gear
assembly abnormal
Cam gear does not
move from “HOME” to
“PLAY” drive position.
For CD changer unit (CRS1).
Press [SINGLE CHANGE] on main unit
for next error.
UDU UD base asssembly
abnormal
UD Base assembly does
not move upwards from
tray 5 to tray 2
For CD changer unit (CRS1).
Press [SINGLE CHANGE] on main unit
for next error.
UDD UD base asssembly
abnormal
UD Base assembly does
not move downwards
from tray 1 to tray 5.
For CD changer unit (CRS1).
Press [SINGLE CHANGE] on main unit
for next error.
UD1 UD base asssembly
abnormal
UD Base assembly does
not move to tray 1.
For CD changer unit (CRS1).
Press [SINGLE CHANGE] on main unit
for next error.
F1NG Fail - safe mode. (For
open/close tray
unit(s))
When the tray open
operation is performed, it
fails to open. It will
automatically close all
trays after the time-out
by the microprocessor.
During this time when it
fails, the error code will
appear.
For CD changer unit (CRS1).
Press [SINGLE CHANGE] on main unit
for next error.
F2NG Fail - safe mode. (For
open/close tray
unit(s))
When the tray close
operation is performed, it
fails to close. It will
automatically open all
trays after the time-out
by the microprocessor.
During this time when it
fails, the error code will
appear.
For CD changer unit (CRS1).
Press [SINGLE CHANGE] on main unit
for next error.
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Error Code Diagnosis Contents Description of error Automatic FL Display Remarks
SRVC_TRV To unlock the
traverse unit for
service
1. All trays set to
“STOCK” position
2. Mechanism set to
tray 5
3. Cam gear set to
“HOME” position
For CD changer unit (CRS1).
Press [SINGLE CHANGE] on main unit.
RSET Cam gear jam/close
sensor faulty
During tray re-open, the
cam gear will rotate in
the opposite direction to
reset the cam
gearposition. When it
fails, the error code will
appear.
For CD changer unit (CRS1).
Press [SINGLE CHANGE] on main unit
for next error.
CRS1 Error Code display
1. The errors that occured in CRS1 Mechanism can be recalled and displayed, in the order of the occurence under self-diagnostic
(Refer to Section 9.1 for procedures to enter this mode.
· Only the first 5 errors will be memorized (in backup memory). The subsequence error shall be ignored and not memorize.
For system with EEPROM as memory backup,memory space in EEPROM is neccesary.
2. To display all error code memorized
In CRS1 Self-Diagnostic mode, press [SINGLE CHANGE] to display subsequence error code.
It shall repeat after reaching error no. 5.
e.g.:
[1 _ _ _ _ I H M S] →[SINGLE CHANGE]
[2 _ _ _ _ I T O P] →[SINGLE CHANGE]
[3 _ _ _ _ H O M E] →[SINGLE CHANGE]
[4 _ _ _ _ L O A D] →[SINGLE CHANGE]
[5 _ _ _ _ _ U D D] →[SINGLE CHANGE]
3. To clear the error code memory
In CRS1 Self-Diagnostic mode, long press [SINGLE CHANGE] key (2s or more)
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11.1. Caution
Below is the list of disassembly sections
11 Assembling and Disassembling
Special Note:
This model uses a new CD changer unit CRS1D. In this following section does not contain the necessary disassembly &
assembly information for the CD changer unit (CRS1D) except the disasembly & assembly of traverse unit. Kindly refer
to the original service manual for the CD changer unit. (Order No. MD0603065A3).
“ATTENTION SERVICER”
Some chassis components may have sharp edges. Be careful when disassembling and servicing.
1.This section describes procedures for checking the operation of the major printed circuit boards and replacing the main
components.
2.For reassembly after operation checks or replacement, reverse the respective procedures.
Special reassembly procedures are described only when required.
3.Select items from the following index when checks or replacement are required.
4.Refer to the Parts No. on the page of “Parts Location and Replacement Parts List” (Section 25), if necessary.
Warning :-
This product uses a laser diode. Refer to caution statement Precaution of Laser Diode.
Caution:
After replacing of CD/DVD Changer Unit, ageing test is necessary. Please confirm operation for CD/DVD Changer Unit.
• Disassembly of Top Cabinet
• Disassembly of CD Changer Unit
• Disassembly of Rear Panel
• Disassembly of Main P.C.B.
• Disassembly of Front Panel Unit
• Disassembly of SMPS P.C.B.
• Replacement of Power Amp IC (SMPS P.C.B.)
• Disassembly of Digital Amp P.C.B.
• Replacement for Power Amp IC (Digital Amp P.C.B.)
• Disassembly of Panel P.C.B., Mic P.C.B. & Tact Switch P.C.B.
• Disassembly of Deck Mechanism Unit
• Disassembly for Deck P.C.B.
• Disassembly of Traverse Unit
• Disassembly of Optical Pickup Unit (CD Mechanism)
• Disassembly of Deck Mechanism
• Replacement for cassette lid
• Rectification for tape jam problem
SA-VK950GC / SA-VK950GS / SA-VK950GCS / SA-VK950GC
T
20
service manual SC-TM760