BBK bbk940S User manual

TUNED ST. 3D
MEM
AM
ALL FM
SERVICE MANUAL
bbk940S
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CONTENTS
1. SAFETY PRICAUTIONS 1
2. PREVENTION OF ELECTRO STATIC DISCHARGE(ESD)TO ELECTROSTATICALLY
SENSITIVE(ES)DEVICES 1
4. PREVERTION OF STATIC ELECTRICITY DISCHARGE 4
5. ASSEMBLING AND DISASSEMBLING THE MECHANISM UNIT 5
5.1 OPTICAL PICKUP UNIT EXPLOSED VIEW AND PART LIST 5
5.2 BRACKET EXPLOSED VIEW AND PART LIST 7
6. ELECTRICAL CONFIRMATION 9
6.1 VIDEO OUTPUT (LUMINANCE SIGNAL) CONFIRMATION 9
6.2 VIDEO OUTPUT(CHROMINANCE SIGNAL) CONFIRMATION 10
7. MPEG BOARD CHECK WAVEFORM 11
8. IC BLOCK DIAGRAM & DESCRIPTION 12
9. SCHEMATIC & PCB WIRING DIAGRAM 43
10. SPARE PARTS LIST 65
8.1 MT1336 12
8.2 MT1369 20
8.3 U214 HY29F800 31
8.4 U203 SDRAM-HY57V1610D 34
3. CONTROL BUTTON LOCATIONS AND EXPLANATIONS 2
5.3 MISCELLANEOUS 8
8.5 LX1722 35
8.6SI4558DY
39
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4
3
7 8 9 10 11 12 13 14 15 6
5
2
2
Disc tray
7
STOP button 12 MIC 1 jack
4
VFD display window 9DVD MODE: PAUSE button
TUNER MODE: BAND button
14 MIC VOLUME knob
5
VOLUME knob DVD MODE PREV button
TUNER MODE TUNING button
10 15 ECHO adjustment knob
POWER switch
6
PLAY button DVD MODE: NEXT button
TUNER MODE: TUNING button
11
8FUNCTION button 13 MIC 2 jack
3
OPEN/CLOSE button
3.Control Button Locations and Explanations
Front Panel Illustration
TUNED
ST. 3D
MEM
AM
ALL FM
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Change the audio language.
Switch the TV system between PAL, NTSC and AUTO.
DVD titles.
Switch audio channel.
Pause playback.
Normal playback.
Function setup.
Change subtitle languages/Switch JPEG display modes.
Adjust sound field effects.
Repeat playback.
Sleep timer.
Stations saving button, up to 20 FM/AM stations can
be saved respectively.
Slow playback.
SF button
14
AUDIO button
2
SUBTITLE button
3
L/R button
5
6P/N button
TITLE button
7
SLOW button
13
10 SETUP button
PLAY button
11
PAUSE button
12
NUMBERED buttons
4
Tuning up/down stations.
FWD/REV button
Fast forward/backward playback.
TUNING +/- buttons
19
MAN/AUTO button
20
Adjust EQ effects.
Manual/automatic tuning switch.
FM/AM switch.
Increase/decrease bass.
Increase/decrease treble.
Increase/decrease power amplifier's channel volume.
Select power amplifier's channel volume.
Turn off/on audio outputs
Increase/decrease the master volume.
Select the preset channels.
Select previous/next chapter or track when playing.
SAVE button
18
24 VOL +/- button
SPEAKERS button
25
BASS +/- button
22
TREBLE +/- button
23
MUTE button
27
PREVIOUS/NEXT button
PRESET +/- button
26
Play from the desired point.
Camera angles switch, MP3/JPEG playback modes switch.
DISC/RADIO/AUX IN switch.
GOTO button
36
ANGLE button
37
Open/Close the disc tray.
FUNCTION button
38
EJECT button
39
Power Spectrum Meter on/off.
PSM button
29
Repeat the selected section A-B.
MAIN VOL button
27
28
A-B button
2730
Back to the previous menu.
Display the disc menu, PBC ON/OFF button.
MENU button
33
Zoom in/out the playing frame.
Display the disc information.
ZOOM button
34
OSD button
35
Stop playback.
STOP button
31
RETURN button
32
BAND button
21
8DIRECTION ARROWS
SELECT button
9
6
3
2
5
7
8
9
12
11
13
14
15
16
39
38
37
34
35
36
32
33
19
18
20
21
22 23
24
25
26
29
30
31
28
27
17
4
10
REPEAT button
15
EQ button
17
SLEEP button
16
Enter or exit the standby mode.
STANDBY button
Control Button Locations and Explanations (Continued)
Remote Control Illustration
UP/DOWN/LEFT/RIGHT DIRECTION ARROW.
A-B
9 0 +10
56 7 8
1 2 34
STANDBY
EJECT
AUDIO
SUBTITLE ANGLE FUNCTION
GOTO
OSD
ZOOM
P/NL/R
TITLE
SELECT
SETUP RETURN
PLAY PAUSE STOP
SLOW REPEAT
MAIN
PSM
MUTE
BAND BASS VOL
MAN/AUTO
SAVE
SLEEP
TUNING
SF EQ
PRESET
SPEAKERS
TREBLE
MENU
VOL
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5.1 Optical pickup Unit Explosed View and Part List
Pic (1)
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Materials to Pic (1)
No. PARTS CODE PARTS NAME Q ty
14692200 SF-HD60 1
1 1EA0311A06300 ASSY, CHASSIS, COMPLETE 1
2 1EA0M10A15500 ASSY, MOTOR, SLED 1
Or 1EA0M10A15501 ASSY, MOTOR, SLED 1
3 1EA2451A24700 HOLDER, SHAFT 3
4 1EA2511A29100 GEAR, RACK 1
5 1EA2511A29200 GEAR, DRIVE 1
6 1EA2511A29300 GEAR, MIDDLE, A 1
7 1EA2511A29400 GEAR, MIDDLE, B 1
8 1EA2744A03000 SHAFT, SLIDE 1
9 1EA2744A03100 SHAFT, SLIDE, SUB 1
10 1EA2812A15300 SPRING, COMP, TYOUSEI 3
11 1EA2812A15400 SPRING, COMP, RACK 1
21 1EA0B10B20100 ASSY, PWB 1
Or 1EA0B10B20200 ASSY, PWB 1
31 SEXEA25700--- SPECIAL SCREW BIN+-M2X11 3
32 SEXEA25900--- SPECIAL SCREW M1.7X2.2 2
33 SFBPN204R0SE- SCR S-TPG PAN 2X4 2
34 SFSFN266R0SE- SCR S-TPG FLT 2.6X6 1
35 SWXEA15400--- SPECIAL WASHER 1.8X4 X0.25 2

Note : This parts list is not for service parts supply.
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5.2 Bracket Explosed View and Part List
Pic (2)
Materials to Pic(2)
1.bracket 14.frontsiliconrubber
2.belt15.Backsiliconrubber
3.screw 16.Pick-up
4.beltwheel 17.Pick-up
5.gearwheel 18.switch
6.ironchip 19.Five-pinflatplug
7. Immobility mechanism equipment 20. screw
8.Magnet 21.PCB
9.Platen 22.motor
10.Bridgebracket 23.Motorwheel
11.screw 24.screw
12.screw 25.tray
13. Big bracket
Before going process with disassembly and installation, please carefully both
peruse the chart and confirm the materials.
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5.3 MISCELLANEOUS
5.3.1 Protection of the LD(Laser diode)
Short the parts of LD circuit pattern by soldering.
5.3.2 Cautions on assembly and adjustment
Make sure that the workbenches,jigs,tips,tips of soldering irons and measuring instruments are
grounded,and that personnel wear wrist straps for ground.
Open the LD short lands quickly with a soldering iron after a circuit is connected.
Keep the power source of the pick-up protected from internal and external sources of electrical
noise.
Refrain from operation and storage in atmospheres containing corrosive gases (such as H2S,SO2,
NO2 and Cl2)or toxic gases or in locations containing substances(especially from the organic silicon,cyan,
formalin and phenol groups)which emit toxic gases.It is particularly important to ensure that none of the
above substances are present inside the unit.Otherwise,the motor may no longer run.
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6.1. Video Output (Luminance Signal) Confirmation
DO this confirmation after replacing a P.C.B.
Purpose:To maintain video signal output compatibility.
1.Connect the oscilloscope to the video output terminal and terminate at 75 ohms.
2.Confirm that luminance signal(Y+S)level is 1000mVp-p±30mV
Measurement point
Video output terminal
Color bar 75%
PLAY(Title 46):DVDT-S15
PLAY(Title 12):DVDT-S01
DVDT-S15
or
DVDT-S01
Mode Disc
Measuring equipment,tools
200mV/dir,10 sec/dir 1000mVp-p±30mV
Confirmation value
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Do the confirmation after replacing P.C.B.
Purpose:To maintain video signal output compatibility.
1.Connect the oscilloscope to the video output terminal and terminate at 75 ohme.
2.Confirm that the chrominance signal(C)level is 621 mVp-p±30mV
Measurement point
Video output terminal
Color bar 75%
PLAY(Title 46):DVDT-S15
PLAY(Title 12):DVDT-S01
DVDT-S15
or
DVDT-S01
Mode Disc
Measuring equipment,tools Confirmation value
Screwdriver,Oscilloscope
200mV/dir,10 sec/dir 621mVp-p±30mV
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