O diodo laser da unidade optica e sensÍvel a descargas eletroestáticas
podendo vir a ser danificado por descargas causadas por roupas
ou mesmo pelo corpo humano. Durante o reparo tenha cuidado para não causar danos a unidade, devido a cargas eletroestáticas e siga
corretamente os procedimentos descritos nesse manual para a execução de reparos e troca de componentes.
As placas de circuito impresso podem ser facilmente danificadas.
Tenha cuidado ao manusea-las.
NOTAS SOBRE A EMISSÃO DO DIODO LASER
O feixe laser nesse modelo é concentrado e deve ser focado na superficie reflexiva do disco, pela lente objetiva da unidade optica. Quando
estiver observando a emissão do diodo laser, tome o cuidado de estar
no minimo a 30 cm da lente objetiva.
SOLDA SEM CHUMBO
Placas que exigem o uso de solda sem chumbo sã
a marca LF (lead free) indicando que a solda não contem chumbo.
(Atenção
TICA OU BASE DA UNIDADE
o impressas com
: Algumas placas de circuito impresso podem não ter essa
marca devido ao seu tamanho reduzido.)
HCD-GTR6H/GTR8
: IDENTIFICAÇÃO DA SOLDA SEM CHUMBO
A solda livre de chumbo tem as seguintes caracteristicas:
• Derrete a uma temperatura 40 °C maior que a solda comum.
Ferros de solda comuns podem ser usados mas a ponta tem que
ser aplicada sobre a solda por um tempo maior.
Ferros de solda com ajuste de temperatura devem ser ajustados
no valor de 350 °C.Atenção: A impressao da placa (trilhas de cobre) pode se soltar
se a ponta permanecer por muito tempo. Tenha cuidado!
mais viscosa
• É
A solda livre de chumbo é
lidade) que a solda comum, portanto tenha cuidado com as pontes de solda, especialmente entre os pinos de IC's.
• Pode ser utilizada com solda comum
E melhor usar apenas solda sem chumbo, mas este tipo també
pode ser adicionado a solda comum.
NATA SOBRE REPARO DO IC102 DA PLACA DMB19
IC102 da placa DMB19 não pode ser substituído individualmente.
Quando esta peça é com defeito, substitua a placa montada.
DESTRAVANDO A BANDEJA DO DISCO
Esta função serve para evitar o furto de discos de aparelhos em
demosntração em lojas.
mais viscosa (flui com menor faci-
m
Procedimento para Destravar:
1. Pressione a tecla [I/
2. Pressione a tecla [CD] para selecionar função CD.
3. Enquanto pressiona tecla [
(por mais de 5 segundos).
4. A menssagem “UNLOCKED” aparecera e a bandeja estará
liberada
Nota: Quando “LOCKED” é exibido, a bandeja não será liberada ao
desligar o aparelho através do botão [I/
1 STANDBY] para ligar o aparelho.
] , pressione [Z OPEN/CLOSE]
x
STANDBY].
1
5
ÍNDICE
1. DESMONTAGEM
1-1. Case (Top) ............................................................................7
2. All LEDs and segments in fl uorescent indicator tube are light-
ed up. All LEDs are lighted up in red color except for [
LED where the LED is lighted up in red and blue color,
[ A] LED in blue color and SUBWOOFER ON/OFF in
green color.
3. When you want to enter to the model version and destination
display mode, press [DISC 1] button. The model information
appears on the fl uorescent indicator tube.
4. Each time [DISC 1] button is pressed, the display changes to
display software version and date of the software creation.
The sequence is model destination, SC, MDK, GC, SYS, CD,
CDMA, CDMB, ST, TC, TA, TM and MTR in this order, and
returns to the model destination display.
5. Press [DISC 2] button, the key check mode is activated.
6. In the key check mode, the fl uorescent indicator tube displays
“K 0 J0 V0”.
Turn the [OPERATIONAL DIAL] clockwise; ”J” value in-
creases by one. Turn the [OPERATIONAL DIAL] counterclockwise; “J” value decreases by one. Each time a button is
pressed, “K” value increases. Press other keys on main unit
to check whether the key is detected. However, once a button
has been pressed, it is no longer taken into account.
“V” value increases in the manner of 0,1, 2, 3 ... if [VOLUME]
knob i s tu rned clock wis e, or it d ecr eas es i n th e ma nne r of 0 , 9,
8, 7 ... if [VOLUME] knob is turned counterclockwise.
7. When [DISC SKIP/EX-CHANGE] button is pressed after
all LEDs and segments in fl uorescent indicator tube light
up, alternate segments in fl uorescent indicator tube and LED
would light up. If you press [DISC SKIP/EX-CHANGE] button again, another half of alternate segments in fl uorescent
indicator tube and LED would light up. Press [DISC SKIP/
EX-CHANGE] button again would cause all segments will
lights off and press [DISC SKIP/EX-CHANGE] button again
all segments will lights up.
8. To release from this mode, press three buttons in the same
manner as step 1, or disconnect the power cord.
B]
HCD-GTR6H/GTR8
4. When the [VOLUME] knob is turned clockwise even slightly,
the sound volume increases to its maximum and a message
“VOLUME MAX” appears on the fl uorescent indicator tube.
5. When the [VOLUME] knob is turned counterclockwise even
slightly, the sound volume decreases to its minimum and a
message “VOLUME MIN” appears on the fl uorescent indica-
tor tube.
• Tape function (only for HCD-GTR6B/GTR8B)
1. Inserted a tape in deck. The function is changed to VIDEO
automatically when the recording is started by pressing [REC
TO TAPE] then press [ENTER] button. During recording the
ALC (Automatic Logic Control) is turned on.
2. During recording, press ALBUM - will stop the recording
and the function is changed to TAPE and rewind the tape in
Deck until the recording start position and playback of the
tape in Deck is started.
• To release from MC Test mode
1. To release from this mode, press [POWER] button.
2. The cold reset is enforced at the same time.
[COLD RESET]
• The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning the
set to the customer.
Procedure:
1. Press [x] button, [ENTER] button, and [POWER] button simultaneously.
2. The fl uorescent indicator tube becomes blank for a while, and
the set is reset.
[VACS ON/OFF]
• This mode is used to switch ON and OFF the VACS (Variable
Attenuation Control System).
Procedure:
1. Press [POWER] button to turn the set ON.
2. Press [x] button and [OPTIONS] button simultaneously. The
message “VACS OFF” or “VACS ON” appears on the fl uores-
cent indicator tube.
[MC TEST MODE]
• This mode is used to check operations of the respective sections
of Amplifi er and Tape.
2. The CD number indicators fl ash on the fl uorescent indicator
tube. The function is changed to VIDEO.
• Check of Amplifi er
1. Press [EQ BAND] button repeatedly until a message “GEQ
MAX” appears on the fl uorescent indicator tube. GEQ in-
creases to its maximum.
2. Press [EQ BAND] button repeatedly until a message “GEQ
MIN” appears on the fl uorescent indicator tube. GEQ de-
creases to its minimum.
3. Press [EQ BAND] button repeatedly until a message “GEQ
FLAT” appears on the fl uorescent indicator tube. GEQ is set
to fl at.
[TUNER STEP CHANGE]
• The step interval of AM channels can be toggled between 9 KHz
and 10 KHz. This mode is not available for Saudi Arabian models.
Procedure:
1. Press [POWER] button to turn the set ON.
2. Press [TUNER/BAND] / [TUNER AM] button to select the
“A M”.
3. Press [POWER] button to turn the set OFF.
4. Press [ENTER] button and [POWER] button simultaneously.
The system will turn ON automatically. The message “AM
9K STEP” or “AM 10K STEP” appears on the fl uorescent in-
dicator tube and thus the channel step is changed.
18
HCD-GTR6H/GTR8
[CD SHIP MODE (WITH MEMORY CLEAR)]
• This mode moves the optical pick-up to the position durable to
vibration and clears all data including preset data stored in the
RAM to initial conditions. Use this mode when returning the set
to the customer after repair.
Procedure:
1. Press [POWER] button to turn the set ON.
2. Select CD function and waiting until CD no disc confi rm.
3. Press [x] button, [SOUND FLASH] button and [POWER]
button simultaneously. The set will power off automatically.
4. After the “STANDBY” blinking display fi nishes, a message
“MECHA LOCK” is displayed on the fl uorescent indicator
tube and the CD ship mode is set.
5. Then AC power OFF.
[CD SHIP MODE (WITHOUT MEMORY CLEAR)]
• This mode moves the optical pick-up to the position durable to
vibration. Use this mode when returning the set to the customer
after repair.
Procedure:
1. Press [POWER] button to turn the set ON.
2. Select CD function.
3. Press [CD] button and [POWER] button simultaneously. The
set will power off automatically.
4. After the “STANDBY” blinking display fi n i s h e s , a m e s s a g e
“MECHA LOCK” is displayed on the fl uorescent indicator
tube and the CD ship mode is set.
5. The AC power OFF.
3. The VACS Level Display, the fl uorescent indicator tube dis-
plays “VATB F APC”. “V” represent VACS , A represent
VACS level which is triggered by signal level, “T” represent
Thermal VACS NEO, B represent VACS level which is triggered by temperature, “F” represent FAN is triggered by
software to turn in to high speed, “AP” represent APVACS
(Abuse Protection VACS) and “C” represent APVACS level
which is triggered.
[METER AGING TEST MODE]
• This mode use in factory to perform the non-stop aging mode for
meter device.
Procedure:
1. Press [POWER] button to turn on the system.
2. Press [EQ BAND/MEMORY] button and [METER MODE]
button simultaneously.
[ERROR MESSAGE]
1. METER ERROR CODE CHECK
• This mode is used to check the number of trigger for Meter Pointer
to initial switch and end switch. The switches will trigger during
meter initialize in AC supply on condition.
• This mode let you lock the disc tray. When this mode is activated,
the disc tray will not open when [OPEN/CLOSE] button or [EXCHANGE] button is pressed. The message “LOCKED” will be
displayed on the fl uorescent indicator tube.
Procedure:
1. Press [POWER] button to turn the set ON.
2. Select CD function.
3. Press [x] button and [OPEN/CLOSE] button simultaneously
and hold down until “LOCKED” or “UNLOCKED” displayed on the fl uorescent indicator tube (around 5 seconds).
The Meter Er ror Code will appear on the fl uorescent indicator
tube displays
• Display
Display on fl uorescent indicator tube,
IxxxxxMyyyyy
Ixxxxx = total number of Initial Switch touch by Meter
pointer. The Initial Switch will touch twice during meter
initialized process.
Myyyyy = total number of End Switch touch by Meter
pointer. The End Switch will touch one times during meter
initialized process.
[VACS DISPLAY]
• This mode is used to check the VACS level.
Procedure:
1. Press [POWER] button to turn on the system.
2. Press [x] button, [SOUND FLASH] button and [DISC SKIP/
EX-CHANGE] button simultaneously.
19
HCD-GTR6H/GTR8
SEÇÃO 3
AJUSTES ELÉTRICAS
TUNER SECTION 0 dB = 1 µV
[FM Tune Level Check]
FM signal generator
SET
Procedure:
1. Turn the power on.
2. Input the following signal from Signal Generator to FM antenna input directly.
* Carrier Freq : A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation : 75 kHz
Modulation : 1 kHz
ANT input : 35 dBu (EMF)
Note: Please use 75 ohm “coaxial cable” to connect SG and the set. You
cannot use video cable for checking.
Please use SG whose output impedance is 75 ohm.
OUT (75 7)
3. Set to FM tuner function and tune A, B and C signals.
4. Confi rm “TUNED” is lit on the display for A, B and C sig-
nals.
The mark of “TUNED” means “The selected station signal is
received in good condition.”
• Note For Printed Wiring Boards And Schematic Diagrams
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
• Indication of transistor.
• A : B+ Line.
• B : B– Line.
• Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• BD93 and Driver sections.
no mark : CD PLAY
• Except BD93 and Driver sections.
no mark : FM
( ) : CD PLAY
< > : TAPE PLAY
[ ] : TAPE REC
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10
M:).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F : AUDIO
f : TUNER
N : MIC
J : CD PLAY
c : DIGITAL
I : USB
Note: The components identifi ed by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specifi ed.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to fl ow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may also
be added to ordinary solder.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in : and 1/4W or less unless otherwise
specifi ed.