DOWNLOAD Sony HCD-DR7AV / HCD-XB800AV / LBT-DR7AVS Service Manual ↓ Size: 9.81 MB | Pages: 90 in PDF or view online for FREE

Model
HCD-DR7AV HCD-XB800AV LBT-DR7AVS
Pages
90
Size
9.81 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-dr7av-hcd-xb800av-lbt-dr7avs.pdf
Date

Sony HCD-DR7AV / HCD-XB800AV / LBT-DR7AVS Service Manual ▷ View online

– 10 –
3-5. TAPE MECHANISM DECK AND CASSETTE LID
3-6. CD MECHANISM DECK
3-7. BASE UNIT
5
 Cassette lid (B) assembly
     (Refer to upper figure)
7
 Holder (B) assembly
    (Refer to lower figure)
6
 Holder (A) assembly
    (Refer to lower figure)
4
 Cassette lid (A) assembly
     (Refer to upper figure)
Cassette lid assembly
Holder assembly
Claw
Claw
Claw
Claw
8
 Torsion spring (TC-A)
9
 Torsion spring (TC-B)
1
 Three screws (BVTP 2.6x8)
2
 Three screws
(BVTP 2.6x8)
3
 Tape mechanism
Portion 
B
Portion 
B
Portion 
A
Portion 
A
1
 
Five screws (BVTP3x8)
2
 
CD mechanism 
     deck
3
 
Base unit
1
 
Yoke fitting
2
 
Boss
– 11 –
3-8. DISC TABLE
A
A
2
 
Screw (BVTP3X8)
1
 
Screw (BVTP3X8)
4
 
Stop screw
5
 
Disc table
3
 
Bracket (BU)
Note:
When the disc table is installed, adjust the positions of
roller cam and mark 
” as shown in the figure, then set to
the groove of disc table.
– 12 –
SECTION  4
SERVICE MODE
MC 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 three buttons  
t/CLOCK SET  ,  ENTER  , and  1/u  simultaneously.
2. “COLD RESET” is displayed on the fluorescent display tube and reset is executed.
CD Delivery Mode
• This mode moves the pick-up to the position durable to vibration. Use this mode when returning the set to the customer after repair.
Procedure:
1. Press  
1/u  button to turn the set ON.
2. Press  LOOP  button and  
1/u  button simultaneously.
3. A message “LOCK” is displayed on the fluorescent indicator tube, and the CD delivery mode is set.
MC Hot Reset
• This mode resets the set with the preset data kept stored in the memory.  The hot reset mode functions same as if the power cord is plugged
in and out.
Procedure:
1. Press three buttons  
t/CLOCK SET  ,  ENTER  , and  DISC 1  simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously, and the set is reset.
Sled Servo Mode
• This mode can run the CD sled motor freely. Use this mode, for instance, when cleaning the pick-up.
Procedure:
1. Press  
1/u  button to turn the set ON.
2. Press three buttons  
t/CLOCK SET  ,  ENTER  , and  DISC 5  simultaneously.
3. The Sled Servo mode is selected, if “CD” is blanking on the fluorescent indicator tube.
4. With the CD in stop status, When the  
= AMS +  knob is rotated in the clockwise direction, the pick-up moves outside. When
rotated counterclockwise, it moves inside.
5. To exit from this mode, perform as follows:
1) Move the pick-up to the most inside track.
2) Execute MC cold reset. (Press the three buttons  
t/CLOCK SET  ,  ENTER  , and  1/u  button simultaneously.)
Note:
• Always move the pick-up to most inside track when exiting from this mode.  Otherwise, a disc will not be unloaded.
• Do not run the sled motor excessively, otherwise the gear can be chipped.
Change-over of AM Tuner Step between 9kHz and 10kHz (DR7AV Only)
• A step of AM channels can be changed over between 9kHz and 10kHz.
Procedure:
1. Press  
1/u  button to turn the set ON.
2. Select the function “TUNER”, and press  TUNER/BAND  button to select the BAND “AM”.
3. Press  
1/u  button to turn the set OFF.
4. Press  ENTER  and  
1/u  buttons simultaneously, and the display of  fluorescent indicator tube changes to “AM 9k STEP” or “AM 10k
STEP”, and thus the channel step is changed over.
LED and Fluorescent Indicator Tube All Lit, Key Check Mode
Procedure:
1. Press three buttons  
t/CLOCK SET  ,  ENTER  , and  DISC 2  simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
Press  DISC 2  button, and the key check mode is activated.
3. In the key check mode, the fluorescent indicator tube displays “K @ V0 J0”.  Each time a button is pressed, “K”value increases. However,
once a button is pressed, it is no longer taken into account.
“J” Value increases like 1, 2, 3 ... if rotating  
= AMS +  knob in “+”  direction, or it decreases like 0, 9, 8 ... if rotating in “-”
direction.
“V” Value increases like 1, 2, 3 ... if rotating  VOLUME  knob in “+”  direction, or it decreases like 0, 9, 8 ... if rotating in “-” direction.
4. To exit from this mode, press three buttons in the same manner as step 1, or disconnect the power cord.
– 13 –
AMS Test  Mode
• This mode is used for checking the AMS operations of the tape deck.
JIG
7-819-039-12 Alignment tape, AMS-110A
Procedure:
1. Press the  
1/u  button to turn the set ON.
2. Set the tape (AMS-110A).
3. Press the three buttons  
t/CLOCK SET  ,  ENTER  , and  DISC 3  button simultaneously.
4. “TEST MODE” is displayed on the fluorescent display tube.
5. Press the  FUNCTION  button and switch the function to the deck with the tape (AMS-110A).
6. Press the  CD SYNCHRO  button. “AMS CHECK” is displayed on the fluorescent display tube and the tape is rewound.
7. AMS starts in the normal direction. If the AMS count is 2 at shut down, proceed to step 8.
“NG” is displayed at other times, and the deck stops.
8. AMS starts in the opposite direction. If the AMS count is 2 at shut down again, “OK” is displayed.
“NG” is displayed at other times.
Aging Mode
During the aging mode, both the CD player and tape deck are executed together.
• If an error occurs:
Aging stops, and the error state is displayed on the fluorescent display tube.
• If no error occurs:
Aging is repeated.
Procedure:
1. Press the  
1/u  button to turn the set ON.
2. Load 10 minute tapes with unbent rec-proof tabs in decks A and B.
3. Set CDs on the DISC 1 and DISC 4 tables.
4. Set the CD mode REPEAT to OFF and PLAY MODE to ALL DISCS.
(Press the  PLAY MODE  and  REPEAT  buttons to set these modes.)
5. Press the  FUNCTION  button to switch the function to “CD”.
6. Press the three buttons   
t/CLOCK SET  ,  ENTER  , and  DISC 4  button simultaneously.
7. Aging starts.
8. To end aging, press the  
1/u  button to turn the set OFF.
Aging Sequence:
Aging is performed in the following sequence.
• Tape Deck
1. The tape in deck A is rewound. “TAPE A AG-1” is displayed.
2. The FWD side of deck A is played for two minutes.
“TAPE A AG-2” is displayed.
3. The tape in deck A is fast forwarded. “TAPE A AG-3” is displayed. Fast forward is carried out for 20 seconds or to the tape end.
4. The RVS side of deck A is played for two minutes.
“TAPE A AG-4” is displayed.
5. The tape in deck A is rewound. “TAPE A AG-5” is displayed.
6. The FWD side of deck B is played for two minutes.
“TAPE B AG-2” is displayed.
7. The tape in deck B is fast forwarded. “TAPE B AG-3” is displayed. Fast forward is carried out for 20 seconds or to the tape end.
8. The RVS side of deck B is played for two minutes.
“TAPE B AG-4” is displayed.
9. The tape in deck A is rewound. “TAPE A AG-5” is displayed.
10. Repeated from step 2.
• CD
1. The tray rotates.
2. DISC 1 is chucked.
3. The TOC is read.
4. The first track is played for 2 seconds.
5. The last track is played for 2 seconds.
6. The tray rotates.
7. DISC 4 is chucked.
8. The TOC is read.
9. The first track is played for 2 seconds.
10. The last track is played for 2 seconds.
11. Repeated from step 1.
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