Sony HCD-BC150 / HCD-BC250 (serv.man2) Service Manual ▷ View online
SERVICE MANUAL
US Model
Canadian Model
E Model
HCD-BC150/BC250
Australian Model
HCD-BC150
9-877-956-83
Ver 1.3 2004.08
HCD-BC150/BC250
SUPPLEMENT-3
Subject: SERVICING NOTE, DISASSEMBLY and BLOCK DIAGRAM
2
HCD-BC150/BC250
TABLE OF CONTENTS
1.
SERVICING NOTE
...................................................
3
2.
DISASSEMBLY
2-1.
Disassembly Flow ...........................................................
6
2-2.
Case, Front Panel Assy Section .......................................
7
2-3.
PANEL Board, FL Board, H/P Board,
POWER SW Board .........................................................
POWER SW Board .........................................................
8
2-4.
SWITCHING REGULATOR ..........................................
8
2-5.
AMP Board ......................................................................
9
2-6.
DMB07 Board .................................................................
9
2-7.
SPK Board, IO Board, DC Fan ....................................... 10
2-8.
MAIN Board .................................................................... 10
2-9.
LF Board .......................................................................... 11
2-10. MD Rear Cover ............................................................... 11
2-11. DVD Mechanism Deck (CDM81A-DVBU27) ............... 12
2-12. TRAY .............................................................................. 13
2-13. MOTOR Board, M761 (LD/ST Motor),
2-11. DVD Mechanism Deck (CDM81A-DVBU27) ............... 12
2-12. TRAY .............................................................................. 13
2-13. MOTOR Board, M761 (LD/ST Motor),
M762 (BU U/D Motor) ................................................... 13
2-14. Base Unit (DVBU27) ...................................................... 14
2-15. RF Board ......................................................................... 14
2-16. Optical Pick-up (DBU-1) ................................................ 15
2-15. RF Board ......................................................................... 14
2-16. Optical Pick-up (DBU-1) ................................................ 15
3.
DIAGRAMS
3-1.
Block Diagram – RF/SERVO Section – ......................... 17
– VIDEO Section – .......................................................... 18
– AMP Section – .............................................................. 19
– AUDIO Section – .......................................................... 20
– POWER Section – ........................................................ 21
– VIDEO Section – .......................................................... 18
– AMP Section – .............................................................. 19
– AUDIO Section – .......................................................... 20
– POWER Section – ........................................................ 21
3
HCD-BC150/BC250
SECTION 1
SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output several times.
that the S curve waveform is output several times.
• SERVICING POSITION-1 (DVD MECHANISM DECK)
1mm/21P/L300 (J-2501-244-A)
DVD mechanism deck
(CDM81A-DVBU27)
(CDM81A-DVBU27)
1mm/28P/L300 (J-2501-249-A)
DISC SLOT LOCK
The disc slot lock function for the antitheft of an demonstration
disc in the store is equipped.
disc in the store is equipped.
Setting Procedure :
1. Press the ?/1 button to turn the set on.
2. Press the [FUNCTION] button to set DVD function.
3. Insert a disc.
4. Press the
2. Press the [FUNCTION] button to set DVD function.
3. Insert a disc.
4. Press the
x
stick and the A
(DISC1) button simultaneously
for five seconds.
5. The message “LOCKED” is displayed and the slot is locked.
Releasing Procedure :
1. Press the
x
stick and the A
(DISC1) button simultaneously
for five seconds again.
2. The message “UNLOCKED” is displayed and the slot is
unlocked.
Note:
When “LOCKED” is displayed, the slot lock is not released by
turning power on/off with the ?/1 button.
turning power on/off with the ?/1 button.
Note 1:
Regarding the notification symbol “R”
Because the number of the operating buttons of this product are
limited, some operations require use of the operating buttons of the
remote commander (RM-SS250 supplied with the product). When
a specific operation requires use of the operating buttons of the
remote commander (RM-SS250), “R” is added to the specific
operating procedure in this manual.
Example MENU/NO “R” The MENU/NO button of remote
commander.
Because the number of the operating buttons of this product are
limited, some operations require use of the operating buttons of the
remote commander (RM-SS250 supplied with the product). When
a specific operation requires use of the operating buttons of the
remote commander (RM-SS250), “R” is added to the specific
operating procedure in this manual.
Example MENU/NO “R” The MENU/NO button of remote
commander.
Note 2:
Incorrect operations may be performed if the test mode ia not entered
properly.
In this case, press the ?/1 button to turn the power off, and retry
to enter the test mode.
properly.
In this case, press the ?/1 button to turn the power off, and retry
to enter the test mode.
Note 3:
If the disc tray does not open and the message “LOCKED” appears,
press the x stick and the A (DISC1) button simultaneously for 5
seconds or longer.
Then remove your fingers from the above stick and the button.
The message “UNLOCKED” appears for 2 seconds and the disc
tray opens.
press the x stick and the A (DISC1) button simultaneously for 5
seconds or longer.
Then remove your fingers from the above stick and the button.
The message “UNLOCKED” appears for 2 seconds and the disc
tray opens.
NOTE OF REPLACING THE DMB07 BOARD
When replacing the DMB07 board, since the adjustment value is
not set up correctly, “Drive Auto Adjustment” can’t be performed.
In this case, initialize Memory in the following procedures.
not set up correctly, “Drive Auto Adjustment” can’t be performed.
In this case, initialize Memory in the following procedures.
Procedure:
1. Set the test mode. (See page 3 of Supplement-1)
2. Press the [2] key of the remote commander, and set the “DRIVE
2. Press the [2] key of the remote commander, and set the “DRIVE
MANUAL OPERATION”. (See page 5 of Supplement-1)
3. Press the [6] key of the remote commander, and set the “2-6,
Memory Check”. (See page 7 of Supplement-1)
4. Press the [CLEAR] key of the remote commander, and initialize
Memory.
4
HCD-BC150/BC250
• SERVICING POSITION-2 (DMB07 BOARD)
• SERVICING POSITION-3 (AMP BOARD)
DMB07 BOARD
AMP BOARD
