Sony AVD-K150B User manual

SERVICE MANUAL
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
AEP Model
AVD-K150B/K150E/K150N/K150R
UK Model
AVD-K150G
DVD/VCR RECEIVER
9-877-959-01
2004F1678-1
© 2004.06
Ver 1.0 2004.06
SPECIFICATIONS
AVD-K150B/K150E/K150G/
K150N/K150R
General
Power requirements AC 230 V , 50/60 Hz
Power consumption 74W
Dimensions (approx.) 430 x 98 x 386 mm
7
/ 8
x 15
1
/ 4 inches) (W x H x D)
Mass (approx.) 6.5 kg (14 lb 6 oz)
Operating temperature 5 °C to 35 °C (41 °F to 95 °F)
Operating humidity 5 % to 90 %
DVD Section
Laser Semiconductor laser (Wavelength
Signal system PAL
Frequency response DVD (PCM 48 kHz): 10 Hz to 22 kHz
CD: 10 Hz to 20 kHz
Signal-to-noise ratio More than 80 dB (ANALOG OUT
connectors only)
Harmonic distortion Less than 0.05%
VIDEO Section
Head system 4 heads helical scan azimuth system
Television system PAL B/G colour system (150E)
PAL B/G, SECAM L colour system (150B)
PAL B/G, SECAM D/K colour system (150N)
PAL (B/G, I/I), SECAM D/K colour system (150R)
PAL I colour system (150G)
Recording format PAL
(17 x 3
DVD: 650nm, CD: 780nm)
Tape speed PAL/MESECAM; 23.39 mm/s (SP),
16.69 mm/s (LP)
Maximum recording time SP: 4 hour (E-240 tape), LP: 8 hour
Rewind time About 180 seconds (E-180 tape)
Input level VIDEO: 1.0 V(p-p), 75 ohms, unbalanced
AUDIO: -6.0 dBm, more than 10 kohms (SCART)
-6.0 dBm, more than 47 kohms (RCA)
DIGITAL AUDIO IN: Optical connector x 1
Output level VIDEO: 1.0 V(p-p), 75 ohms, unbalanced
(E-240 tape)
FM Tuner
Tuning Range 87.5 - 108.0 MHz (ALL MODEL)
65 - 74 MHz (150R)
Intermediate Frequency 10.7 MHz
AM Tuner
Tuning Range 522 - 1,611 kHz
Intermediate Frequency 450 kHz
Amplifier Section
Stereo mode 70W + 70W (6 Ωat 1 kHz, THD 10 %)
Surround mode Front: 70W/ch (6 Ωat 1 kHz, THD 10 %)
Center*: 70W (6 Ωat 1 kHz, THD 10 %)
Surround*: 70W/ch (6 Ωat 1 kHz, THD 10 %)
Subwoofer*: 100W (4 Ωat 30 Hz, THD 10 %)
* Depending on the sound mode settings and the source,
Inputs AV 2, AV 3, OPTICAL IN (AV3 OPT)
there may be no sound output.
• Design and specifications are subject to change without notice.
AVD-K150B/K150E/K150G/K150N/K150R isthe
Amplifier, DVD/VIDEO player and tuner section
in DAV-D150B/D150E/D150G/D150N/D150R.
• Manufactured under license from Dolby Laboratories."Dolby", "Pro
Logic", and the double-D symbol are trademarks of Dolby Laboratories.
Confidential unpublished works. Copyright 1992 -1997 Dolby
Laboratories.All rights reserved.
• DTS and DTS Digital Surround are registered trademarks of Digital
Theater Systems, Inc.
Model Name Using Similar Mechanism NEW
DVD Mechanism Type DP-7C
Optical Pick-up Name PVR-502W
VCR Mechanism Type D35 (N)

2
AVD-K150B/K150E/K150G/K150N/K150R
Notes on chip component replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
•Keep the temperature of the soldering iron around 270 °C
during repairing.
•Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
•Be careful not to apply force on the conductor when soldering
or unsoldering.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
WITH MARK 0ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
CAUTION
Use of controls or adjustments or performance of procedures
otherthanthosespecifiedhereinmayresult in hazardousradiation
exposure.
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 viscou-s (sticky, less prone to flow)
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.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER
PRODUCT MARKING is
located on the rear exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1. NOTES ON HANDLINGTHE OPTICAL PICK-UP BLOCK
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.
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.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
Carry out the “S curve check” in “CD sectionadjustment” and check
that the S curve waveform is output several times.

3
AVD-K150B/K150E/K150G/K150N/K150R
• SERVICE POSITION-1 (DVD Mechanism Deck)
Extension cable (J-2501-242-A, J-2501-245-A) is required to
inspect the DVD mechanism deck.
• SERVICE POSITION-2 (VIDEO Mechanism Deck)
Perform the operation check of the VIDEO mechanism deck
after the VCR board and the VIDEO mechanism deck are
turned upside down.
J-2501-242-A (1mm/11P/L300)
J-2501-245-A (1mm/23P/L300)
DVD mechanism deck
SMPS board
VCR board
VIDEO mechanism deck

4
AVD-K150B/K150E/K150G/K150N/K150R
TABLE OF CONTENTS
1. GENERAL ................................................................... 5
2. DISASSEMBLY
2-1. Cover, Front Panel Assembly .......................................... 12
2-2. DISPLAY/KEY Board .................................................... 13
2-3. Video Mechanism Deck .................................................. 13
2-4. DVD Mechanism Deck ................................................... 14
2-5. SMPS Board .................................................................... 14
2-6. VCR Board ...................................................................... 15
2-7. DVD & AMP Board ........................................................ 15
3. ELECTRICAL ADJUSTMENTS
3-1. VCR Section ElectricalAdjustment ................................ 16
3-2. Electrical Troubleshooting Guide.................................... 17
3-3. DVD & AMP Section Electrical
Troubleshooting Guide .................................................... 32
4. MECHANICAL ADJUSTMENTS......................... 40
5. DIAGRAMS
5-1. Block Diagram – DVD (OVERALL) Section – .............. 52
5-2. Block Diagram – DVD (AMP) Section –........................ 53
5-3. Block Diagram –VCR/PANEL Section –....................... 54
5-4. Block Diagram –VCR (Y/C) Section – .......................... 55
5-5. Block Diagram –VCR (TU-VPS) Section – ................... 56
5-6. Block Diagram –VCR (HI-FI) Section –........................ 57
5-7. Block Diagram –VCR POWER Section –...................... 58
5-8. Block Diagram – POWER Section –............................... 59
5-9. Printed Wiring Board
– DVD & AMP Section (Component Side) – ................. 60
5-10. Printed Wiring Board
– DVD & AMP Section (Conductor Side) – ................... 61
5-11. Schematic Diagram
– MPEG Section – [DVD & AMP Board] (1/6).............. 62
5-12. Schematic Diagram – RF & SERVO Section –
[DVD & AMP Board] (2/6)............................................. 63
5-13. Schematic Diagram – AUDIO, µ_COM Section –
[DVD & AMP Board] (3/6)............................................. 64
5-14. Schematic Diagram – DIGITAL AMP Section –
[DVD & AMP Board] (4/6)............................................. 65
5-15. Schematic Diagram – PWM & CODEIC Section –
[DVD & AMP Board] (5/6)............................................. 66
5-16. Schematic Diagram – INTERFACE Section –
[DVD & AMP Board] (6/6)............................................. 67
5-17. Printed Wiring Board – VCR Section –........................... 70
5-18. Schematic Diagram – VCR SYSTEM Section –
[VCR Board] (1/6)........................................................... 71
5-19. Schematic Diagram – AVCP/SECAM Section –
[VCR Board] (2/6)........................................................... 72
5-20. Schematic Diagram – HI-FI/SWITCH Section–
[VCR Board] (3/6)........................................................... 73
5-21. Schematic Diagram – TUIF/NICAM/VPS Section –
[VCR Board] (4/6)........................................................... 74
5-22. Schematic Diagram – SCART/SWITCH Section–
[VCR Board] (5/6)........................................................... 75
5-23. Schematic Diagram – VCR POWER Section –
[VCR Board] (6/6)........................................................... 76
5-24. Printed Wiring Board – DISPLAY/KEY Section – ......... 78
5-25. Schematic Diagram – DISPLAY/KEY Section –........... 79
5-26. Printed Wiring Board – SMPS Section – ........................ 80
5-27. Schematic Diagram – SMPS Section – .......................... 81
6. EXPLODED VIEWS
6-1. Front Panel Section ......................................................... 83
6-2. Overall Section ................................................................ 84
6-3. DVD Mechanism Deck ................................................... 85
6-4. Video Mechanism Deck -1 .............................................. 86
6-5. Video Mechanism Deck -2 .............................................. 87
6-6. Video Mechanism Deck -3 .............................................. 88
7. ELECTRICAL PARTS LIST .................................. 89

5
AVD-K150B/K150E/K150G/K150N/K150R
SECTION 1
GENERAL This section is extracted
from instruction manual.
Front Panel
ML
DVD: Go to NEXT chapter/track. Press and hold for a fast forward search.
VIDEO: Advances the tape from STOP mode or for fast forward picture search.
X(PAUSE)
Pause playback or recording
temporarily.
zREC/ITR
To record normally or to activate Instant Timer Recording.
ADVD
Opens or closes
the disc tray.
Remote Sensor
Point the DVD/VCR Receiver remote
control here.
Display window
Shows the current sta-
tus of the DVD/VCR
Receiver.
Disc Tray (DVD deck)
Insert a disc here.
@ / 1
Switches the DVD/VCR Receiver ON and OFF.
lm
DVD: Go to beginning of current chapter/track or to previous chapter/track.
Press and hold for a fast reverse search.
VIDEO: Rewinds the tape from STOP mode or for fast reverse picture search.
H(PLAY)
To play back a disc or
a recorded tape.
x(STOP)
Stops playback or recording.
INPUT SELECT
Selects the VIDEO deck's
source (Tuner, AV1, AV2,
AV3 OPT or AV3).
CH/PRESET (+/-)
Scans up or down through
memorized channels or radio
frequencies (stations).
TUNER FM/AM
Selects Radio opera-
tion mode.
AV 3 IN (VIDEO/AUDIO (Left/Right))
Connect the audio/video output of an
external source (Audio system, TV/ Monitor,
another VCR).
Video Cassette Compartment (VIDEO deck)
Insert a video cassette here.
AVIDEO
Ejects the tape in the VIDEO deck.
VOLUME
Adjusts sound level of speakers.
DVD/VIDEO
Toggles control
between the DVD deck
and the VIDEO deck.

6
AVD-K150B/K150E/K150G/K150N/K150R
Display Window
LPSP OPTTIMER VIDEO TRKCHAP REPEAT
MP3
DVD
VCD PBC
SHUFFLE PGM BIL STEREO PCM D PL RDS ANGLE
1 A B
REC
HI-FI
BIL Indicates when a BILINGUAL broadcast is being received.
STEREO Indicates a stereo broadcast is being received.
DVD DVD inserted.
CD Audio CD inserted.
VCD Video CD inserted
MP3 MP3 disc inserted
Indicates repeat mode
ANGLE active
SHUFFLE RANDOM playback active
Acassette is in the VIDEO deck.
SP LP Displays the recording
and playback speed.
HI-FI Indicates the unit is playing
back a tape recorded in Hi-Fi.
OPT Indicates source of DVD/VCR
Receiver is DIGITAL AUDIO IN.
Indicates clock, total playing time, elapsed time, chapter number, track number,
channel, radio frequency, volume, channel or current deck status (Playback,
Pause, etc).
VIDEO DVD/VCR Receiver functions are available
and channels are selected at DVD/VCR Receiver.
PBC Indicates PBC On mode
Indicates playback or pause mode.
TIMER DVD/VCR Receiver is in timer
recording or a timer recording is pro-
grammed.
REC DVD/VCR Receiver is
Recording.
PGM Programmed playback active.
Indicates encoding format of the
current disc.
RDS Lights up when the FM station tuned
is transmitting RDS data.
Indicates sound mode is
DOLBY PROLOGIC II.

7
AVD-K150B/K150E/K150G/K150N/K150R
Remote Control
VIDEO
Select the output source to VIDEO.
DVD
Sets the output source to DVD.
INPUT SELECT
Selects the VIDEO deck's source
(AV1, AV2, AV3 OPT, AV3, or Tuner).
TUNER FM/AM
Selects the DVD/VCR Receiver's tuner as
the listening choice. (FM and AM bands)
0-9 numerical buttons
Selects numbered options in a menu.
TUNING (+/-)
To tune in the desired station.
MEMORY
Memorize a radio station frequency into
the tuner.
RDS
Start a search for a specific PS type.
SHUFFLE
Plays tracks in random order.
PROGRAM
Enters to the program edit mode or exits
from that.
zREC/ITR
Records normally or activates Instant
Timer Recording.
TV/VIDEO
To view channels selected by the VIDEO
tuner or by the TV tuner.
SP/LP
Selects recording speed.
CM SKIP
Fast forwards picture search through 30
seconds of recording.
SHOWVIEW
To display the programme menu for
S
HOW V IEW System programming.
DVD TOP MENU
Displays the disc's Title menu, if available.
DVD MENU
Accesses menu on a DVD disc.
B/b/V/v(left/right/up/down)
Selects an option in the menu.
CH/PRESET(+/-): Selects a program of
VIDEO or Tuner. Adjusts manually the
tape's picture onscreen.
ENTER/OK
Acknowledges menu selection.
DVD DISPLAY, CLK/CNT
Accesses On-Screen display. Switches
among the clock and tape counter.
RETURN
Returns the setup menu.
TV @ / 1
Switches TV ON and OFF.
@ / 1
Switches DVD/VCR Receiver ON and OFF.
TV Control Buttons (see page 41)
•VOL +/- : Adjusts TV's volume.
•CH +/- : Selects TV's channel.
•TV/VIDEO: Selects the TV's source.
CLEAR
Removes a track number on the program
menu. To clear preset stations from the
tuner memory.
Playback Control Buttons
•H(PLAY)
Starts playback.
•x(STOP)
Stops playback.
•.(PREV) (DVD mode only)
Go to beginning of current chapter or
track or go to previous chapter or track.
•>(NEXT) (DVD mode only)
Go to next chapter or track.
•m/M(SLOW t/T)
DVD: For picture search or slow play-
back backward or forward.
VIDEO: Rewinds or advances the tape
in STOP mode or for picture search.
•X(PAUSE)
zPause playback or recording temporari-
ly.
ANGLE
Selects a DVD camera angle if available.
SUBTITLE
Selects a subtitle language.
AUDIO
Selects an audio language (DVD) or an
audio channel (CD).
REPEAT
Repeat chapter, track, title, all.
A-B
Repeats sequence.
SETUP/MENU (i)
Accesses or returns DVD setup menu
and VIDEO setup menu.
SOUND FIELD
Selects sound mode between BYPASS,
PRO LOGIC, PRO LOGIC II (MOVIE,
MUSIC, MATRIX) and 3D SURROUND.
VOL (+/-)
Adjusts speaker volume.
MUTING
Momentarily silence the speaker of the
DVD/VCR Receiver.
Note
This remote control uses the same buttons for VIDEO and DVD functions (ex. PLAY).
To use the VIDEO, first press the VIDEO button.
To use the DVD, first press the DVD button.

8
AVD-K150B/K150E/K150G/K150N/K150R
Rear Panel
Do not touch the inner pins of the jacks on the rear
panel. Electrostatic discharge may cause permanent
damage to the unit.
ANTENNA IN
Connect the VHF/UHF/CATV
antenna to this terminal.
AC Power Cord
Plug into the power source.
ANTENNA OUT (DVD/VIDEO OUT)
Connect to a TV with RF coaxial inputs. AM ANTENNA Connectors
Connect the AM antenna to this terminal.
FM ANTENNA Connectors
Connect the FM antenna to this terminal.
SPEAKERS Connectors
Connect the six supplied speakers to these terminals.
Dust Protection Cap
Remove the dust protection cap from the OPTICAL IN
jack and connect the optical digital cable (not supplied)
securely so that the configurations of both the cable and
the connector match. Keep the dust protection cap and
always reattach the cap when not using the connector to
protect against dust intrusion.
Remote control battery installation
Detach the battery cover on the rear of
the remote control, and insert two R6
(size AA) batteries with and
aligned correctly.
When using the remote control, point it
at the remote sensor on the unit.
Caution
Do not mix old and new batteries. Never mix different
types of batteries (standard, alkaline, etc.).
AA
AA
EURO AV1 (TO TV) (VIDEO IN+OUT/DVD OUT)
Connect to your TV set or another video recorder.
EURO AV2 DECODER/EXTERNAL (VIDEO IN)
Connect to Pay-TV decoder, Set Top Box or another video
recorder.
AV3 (OPTICAL IN)
(DIGITAL AUDIO IN)
Connect to a digital audio output on a
digital device.

9
AVD-K150B/K150E/K150G/K150N/K150R
Connections
AERIAL
Rear of TV
SCART INPUT
Tips
•Depending on your TV and other equipment you wish
to connect, there are various ways you could connect
the DVD/VCR Receiver. Use one of the connections
described below.
•Please refer to the manuals of your TV, VIDEO,
Stereo System or other devices as necessary to
make the best connections.
Caution
−Make sure the DVD/VCR Receiver is connected
directly to the TV. Select the correct AV input on your
TV.
−Do not connect your DVD/VCR Receiver to TV via
your VIDEO. The DVD image could be distorted by
the copy protection system.
Basic connections (AV)
1
Connect the EURO AV1 (TO TV) on the rear panel
of the DVD/VCR Receiver to the scart input socket
on the TV using a SCART lead (E).
2
Some TV broadcasters transmit encoded television
signals which you can only see with a purchased or
rented decoder.You can connect such a decoder
(descrambler) to the DVD/VCR Receiver (D).
Basic connection (RF)
1
Connect the aerial cable (A) from your indoor/ out-
door aerial to ANTENA IN jack on the rear panel of
DVD/VCR Receiver.
2
Connect the supplied RF cable (R) from the
ANTENA OUT jack on the rear panel of DVD/VCR
Receiver to your television's Aerial Input.
Notes
When you connect the DVD/VCR Receiver to your TV,
be sure to turn off the power and unplug both units from
the wall outlet before making any connections.
TV and Decoder (or Set Top Box) Connections
Make one of the following connections, depending on the capabilities of your existing equipment.

10
AVD-K150B/K150E/K150G/K150N/K150R
Connections (Continued)
Radio Aerial Connections
Connect the supplied FM/AM antennas for radio listen-
ing.
1
Connect the AM loop antenna to the AM antenna
connectors.
2
Connect the FM wire antenna to the FM antenna
connectors.
Notes
•To prevent noise pickup, keep the AM loop antenna
away from the DVD/VCR Receiver and other compo-
nents.
•Be sure to fully extend the FM wire antenna.
•After connecting the FM wire antenna, keep it as hori-
zontal as possible.
Accessory Audio/Video (A/V)
Connections to DVD/VCR Receiver
Connect the AV3 IN jacks on the DVD/VCR Receiver to
the audio/video out jacks on your accessory compo-
nent, using optional audio/video cables.
Digital Device Connections
Connect the OPTICAL IN jacks on the DVD/VCR
Receiver to the digital audio out (optical) jacks on your
digital device (Game device, Digital Set Top Box, etc.),
using optional optical audio cable.
To select source of DVD/VCR Receiver to OPTICAL IN,
press INPUT SELECT repeatedly on the remote control
until "AV3 OPT" appears in the display window.
Notes
•If the audio format of the digital output does not
match the capabilities of your DVD/VCR Receiver, the
DVD/VCR Receiver will produce a strong, distorted
sound or no sound at all.
•The Optical input function is available only when the
other unit's Sampling Frequency is 32 - 48kHz.

11
AVD-K150B/K150E/K150G/K150N/K150R
Connections (Continued)
Speaker System Connections
Connect the speakers using the supplied speaker cords
by matching the colors of the terminals and those of the
cords. To obtain the best possible surround sound,
adjust the speaker parameters (distance, level, etc.).
Notes
•Be sure to match the speaker cord to the appropriate
terminal on the components: 3to 3and #to #. If
the cords are reversed, the sound will be distorted
and lack bass.
•If you use front speakers with low maximum input rat-
ing, adjust the volume carefully to avoid excessive
volume output to the speakers.
•
Do not disassemble the front covers of supplied speakers.
Speaker Positioning
For a normal setup use 6 speakers (2 front speakers,
center speaker, 2 rear speakers and subwoofer).
• Front Speakers
Based on your listening position, set up the speakers
at equal distance. And by hearing position, set up an
interval between speakers of 45 degree.
• Center Speaker
It is ideal that the center speakers and front speakers
are same height. But normally place it above or below
the television as shown below.
• Rear Speakers
Place the rear surround speakers to the left and right
behind the primary listening area. These speakers
recreate sound motion and atmosphere required for
surround playback. For best results, do not install the
rear speakers too far behind the listening position,
install them at or above the level of the listenerês ears.
It is also effective to direct the rear speakers towards
a wall or ceiling to further disperse the sound.
In the case of a smaller room size, if the audience is
near to the rear wall set the rear speakers opposite
each other, and set the rear speakers 60 - 90 cm
above the listener's ears.
• Subwoofer
This can be placed in any front position.
Note
Speaker stand is optional.
Attaching the foot pads
To prevent speaker vibration or
movement while listening, attach the
supplied foot pads to the speaker, as
shown.
Attaching the color labels
Attach the color labels onto the rear
panel of the speakers before con-
necting the speakers.
Front Speaker
(Right) Front Speaker
(Left)
Center
Speaker
Rear speaker
(Left surround)
Subwoofer
Rear speaker
(Right surround)
Center Speaker
Front
Speaker
(Left)
Speaker Positioning Example
Rear
Speaker
(Left)
Rear
Speaker
(Right)
Front
Speaker
(Right)
Subwoofer
Be sure to attach the ferrite core to
the speaker cables (for connecting to
this unit).
This ferrite core can reduce noises.
How to attach the ferrite core.
1 Push the stopper [a] of the ferrite core
to open.
2 Wind the Center and Subwoofer
Speaker cables once on the ferrite core.
Pass the others straight on the ferrite
core.
3 Close the ferrite core until it clicks.
About Ferrite Core
1
2
3
Foot pads
FRONT L
Color labels

12
AVD-K150B/K150E/K150G/K150N/K150R
SECTION 2
DISASSEMBLY
•This set can be disassembled in the order shown below.
•The dotted square with arrow ( ) prompts you to move to the next job when all of the works within the dotted square
() are completed.
2-1.COVER, FRONT PANEL ASSEMBLY
(Page 12)
2-2.DISPLAY/ KEY BOARD
(Page 13) 2-5.SMPS BOARD (Page 14)
2-3.VIDEO MECHANISM DECK
(Page 13) 2-4.DVD MECHANISM DECK (Page 14)
2-7.DVD & AMP BOARD
(Page 15)
2-6.VCR BOARD
(Page 15)
SET
2-1. COVER, FRONT PANEL ASSEMBLY
4 cover
2 three screws
1 two screws
3 two screws
6 three hooks
5 volume knob
7 three hooks
8 front panel assembly
Note: Follow the disassembly procedure in the numerical order given.

13
AVD-K150B/K150E/K150G/K150N/K150R
2-2. DISPLAY/KEY BOARD
2-3. VIDEO MECHANISM DECK
3 connector
(
PM602,PM601 )
2 four claws
4 DISPLAY/ KEY board
1 t hree claws
4 VIDEO m echanism dec
k
3 connector
(
PMCO1 )
1 s ix screws
2 fl exible cable

14
AVD-K150B/K150E/K150G/K150N/K150R
2-4. DVD MECHANISM DECK
2-5. SMPS BOARD
1 two screws
2 two screws
7 DVD mechanism deck
5 flexible cable (PMD01)
3 shield cover
4 flexible cable (PMD03
)
6 door case
6 screw (3 × 10
)
1 four screws
2 shield
3 connector (PW101)
7 SMPS board
4 connector (PSW01)
5 connector (PSV01)

15
AVD-K150B/K150E/K150G/K150N/K150R
2-6. VCR BOARD
2-7. DVD & AMP BOARD
9 screw
6 connector (PDV01)
7 flexible cable (PVD02)
8 flexible cable (PVD03)
5 VCR-DISPLAY pwb holder
1 four screws
q; three screws
3 screw
4 bracket
2 connector (PVS01
)
qs VCR board
qa two claws
4 four screws
5 four screws
6 DVD & AMP board
1 connector (PDV01)
2 flexible cable (PDV02
)
3 flexible cable (PDV03)

16
AVD-K150B/K150E/K150G/K150N/K150R
SECTION 3
ELECTRICAL ADJUSTMENTS
3-1.VCR SECTION ELECTRICAL ADJUSTMENT
1. Servo Adjustment
1) PG Adjustment
• Adjustment And Specification
• Test Equipment
a) OSCILLOSCOPE
b) NTSC MODEL : NTSC SP TEST TAPE
MODE
PLAY
•Adjustment Procedure
a) Insert the SP Test Tape and play.
b) Connect the CH1 of the oscilloscope to the H/SW(W373, W374) and CH2 to the Video Out for the VCR.
c) Trigger the mixed Combo Video Signal of CH2 to the CH1 H/SW(W373, W374), and then check the dis-
tance (time difference), which is from the selectedA(B) Head point of the H/SW(W373, W374) signal to
the starting point of the vertical synchronized signal, to 6.5H ±0.5H (412µs, 1H=63µs).
Note - Press FRONT CH UP KEYand FRONT PLAY KEY on Deck playback, and it goes in toATR PRE-
SET. after the SP Test Tape is inserted.
•PG Adjustment Method
a-1) Payback the SP standard tape
b-2) Press the “O” key on the Remote controller and the “PLAY” key on the Front Panel the same time,
then it goes in to Tracking initial mode.
c-3) Repeat the above step(No.b-2), then it finishes the PG adjusting automatically.
d-4) Stop the playback, then it goes out to PG adjusting mode after mony the PG data.
• CONNECTION
•WAVEFORM
V.Out
H/SW(W373, W374) R/C TRK JIG KEY 6.5 ±0.5H
MEASUREMENT POINT ADJUSTMENT POINT SPECIFICATION
V.Out
H/SW(W373, W374) OSCILLOSCOPE
CH1 CH2
V.out
H/SW
R/C KEY
(W373, W374)
H/SW
Composite
VIDEO
6.5H(412µs)

17
AVD-K150B/K150E/K150G/K150N/K150R
3-2. ELECTRICALTROUBLESHOOTING GUIDE
1. Power (SMPS) CIRCUIT
NO 5.3VA.
Replace the F101.
(Use the same Fuse)
Is the F101 normal?
Is the R101
normal?
Is the BD101
normal?
NO
NO
NO
NO
NO
NO
Replace the
BD101.
Replace the R101.
Is the D102
normal?
Check or Replace
the D102.
Replace the D112.
Replace the IC103.
YES
YES
YES
YES
YES
YES
YES
Is Vcc(8.5~21V) sup-
plied to IC101 Pin7?
NO
Is the D112 normal?
Is there about 2.5V
at the IC103 Vref?
Check the Main PCB
5.3VA/5.0V Line short?
(1) No 5.3VA (SYS/Hi-Fi/TUNER)
NO 12VA.
Check or Replace
the D110.
Is the Vcc(13V) supplied
to (+) terminal in D115?
Check or Replace
the Motor Vcc.
Is the Vcc(12V) supplied
to (-) terminal in D115?
NO
NO Replace the D115.
YES
YES
YES
(2) No 12VA (TO CAP, DRUM MOTOR)
NO 5.0VA.
5.3VA Line Check.
Is 5.3VA put into
the Q160 Emitter?
Is about 5V put into
the Q160 Base?
Is the Q162 Base
“H”?
NO
NO Check the Power
Control.
NO
Check or Replace the
Q162, R157, R158, R159.
YES
YES
YES
Check or Replace
the Q162/Q160.
YES
(3) No 5.0V (SYS/Hi-Fi/TUNER)

18
AVD-K150B/K150E/K150G/K150N/K150R
NO 5V.
5.3VA Line Check.
Is 5.3VA put into
the Q160 Emitter?
Is about 5V put into
the Q160 Base?
Is the Q162 Base
“H”?
NO
NO
NO
Check the Power
Control.
Check or Replace the
Q162, R157, R158, R159.
YES
YES
YES
YES
Check or Replace
the Q162/Q160
(4) No 5V (TO DVD)
No 33V.
Check the Power
Control.
Is Q163 Base “H”?
Check or Replace
Q161, R154, R155.
NO
YES
YES
(5) No 33V (TUNER)

19
AVD-K150B/K150E/K150G/K150N/K150R
2. SYSTEM/KEY CIRCUIT
(1) AUTO STOP
(2) The unstable loading of a Cassette tape
Auto Stop
Does the SW25 waveform
appear at the IC501
Pin105?
Do the T-UP Reel Pulses
appear at the IC501 Pin49?
Is 12V applied to the
PMC01 Pin8?
Check the Drum Motor
signal.
Does 5.2V appear at the
RS501?
Check the Power Circuit.
Check the Power.
Is 5.3V applied to the
R544 ?
Refer to SMPS 5.3VA
troubleshooting.
Check the IC501
Pins68, 69, 70, 71.
Do T/UP Reel Pulses
appear at the Q514
Base terminal ?
Replace the T/UP Reel
Sensor (RS501).
Check the CST SW and
the peripheral circuitry.
Replace the IC501.
The unstable loading of a
Cassette tape
Does the “H” signal appear
at the IC501 Pin30 during
inserting the CST ?
Does the “L” signal appear
at the IC501 Pin72 during
inserting the CST?
Check the Deck
Mechanism.
Caution : Auto stop can occur because Grease or Oil is dried up
YES
YES
YES NO
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO NO
YES
YES YES

20
AVD-K150B/K150E/K150G/K150N/K150R
3. SERVO CIRCUIT
(1) Unstable Video in PB MODE
Unstable Video in
PB Mode.
Does the Noise level of the
screen change
periodically?
Do the CTL pulses appear
at the IC501 Pin8? Is adjusting the height of the CTL Head accurate?
Readjust the height of the
CTL Head.
Replace the IC501.
Refer to “When the Y signal
doesn’t appear on the
screen in PB Mode”.
Does the CFG waveform
appear at the IC501
Pin9?
On tracking do the CTL
pulses move?
Does the Video Envelope
waveform appear at the
IC501 Pin24?
Replace the IC501.
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
(2) When the Drum Motor
(2) doesn’t run. Do the DFG Pulses appear
at the PMC01 Pin11?
Replace the Cap M.
Aren’t the foil patterns and
the Components between
IC501 Pin104 and PMC01
Pin11 short?
Replace the IC501.
Refer to “(2)
No 12VA of Power section”
Do the Drum PWM Pulses
appear at the IC501
Pin107?
Aren’t the foil patterns and
the Components between
IC501 Pin107 and PMC01
Pin12 short?
Do the DFG Pulses appear
at the IC501 Pin104?
Do the Drum PWM Pulses
appear at the IC501
Pin107?
Aren’t the connecting patterns and the Components
between IC501 Pin107 and PMC01 Pin12 short?
When the Drum Motor
doesn’t run,
Does 12V appear at the
PMC01 Pin8?
Does 2.8V appear at the
PMC01 Pin12?
Check the connector
(PMC01) and the Drum
Motor Ass’y.
NO
YES
YES
YES
NO
NO
NO
NO
NO
YES
YES
YES