Sony HCD-DX170 User manual

SERVICE MANUAL
Sony Corporation
Home Audio Division
Published by Sony Engineering Corporation
US Model
Canadian Model
HCD-DX150/DX170/DX250
E Model
Australian Model
HCD-DX150
DVD RECEIVER
9-879-398-04
2005K16-1
© 2005.11
Ver. 1.3 2005.11
HCD-DX150/DX170/
DX250
HCD-DX150/DX170/DX250 are the amplifier, DVD/
CDandtunersectioninDAV-DX150/DX170/DX250. Photo: HCD-DX150
— Continued on next page —
This system incorporates with Dolby* Digital and Dolby
Pro Logic (II) adaptive matrix surround decoder and the
DTS** Digital Surround System.
* Manufactured under license from Dolby Laboratories.
"Dolby", "Pro Logic" and the double-D symbol are
trademarks of Dolby Laboratories.
** Manufactured under license from Digital Theater
Systems, Inc. "DTS" and "DTS Digital Surround" are
trademarks of Digital Theater Systems, Inc.
SPECIFICATIONS
Model Name Using Similar Mechanism NEW
Mechanism Type CDM81C-DVBU101
Optical Pick-up Name KHM-310CAB/C2NP
AUDIO POWER SPECIFICATIONS
for the US model
POWER OUTPUT AND
TOTAL HARMONIC
DISTORTION: With 3 ohm loads, both
channels driven, from
200 – 20,000 Hz; rated
55 watts per channel
minimum RMS power,
with no more than 0.7 %
total harmonic distortion
from 250 milli watts to
rated output.
Amplifier section
North American model:
Surround mode (reference) music power output
Front: 133 W + 133 W
(with SS-TS31)
Center*: 133 W
(with SS-CT31)
Surround*: 133 W + 133
W
(with SS-TS31B)
Subwoofer*: 135 W
(with SS-WS31)
Other models:
Stereo mode (rated)
Surround mode (reference) music power output
DX150
55 W + 55 W (3 ohms at 1
kHz, DIN)
Front: 133 W + 133 W
(with SS-TS31)
Center*: 133 W
(with SS-CT31)
Surround*: 133 W + 133
W
(with SS-TS31B)
Subwoofer*: 135 W
(with SS-WS31)
DX170
Surround mode (reference) music power output
Front: 143 W + 143 W
(with SS-TS31)
Center*: 143 W
(with SS-CT31)
Surround*: 143 W + 143
W
(with SS-TS31B)
Subwoofer*: 285 W
(with SS-WS32)
Depending on the sound field settings and the source,
there may be no sound output.
Inputs
VIDEO/SAT (AUDIO IN) Sensitivity: 250/450 mV
Phones
DX250
Surround mode (reference) music power output
Impedance: 50 kilohms
Accepts low-and high-
impedance headphones.
Front: 143 W + 143 W
(with SS-TS41)
Center*: 143 W
(with SS-CT31)
Surround*: 143 W + 143
W
(with SS-TS31B)
Subwoofer*: 285 W
(with SS-WS32)
Central/South American models
Stereo mode (rated)
Surround mode (reference) music power output
55 W + 55 W (DIN)
Front: 120 W + 120 W
Center*: 120 W
Surround*: 120 W + 120
W
Subwoofer*: 120 W

2
HCD-DX150/DX170/DX250
MODEL IDENTIFICATION
– Rear Panel –
Model Part No.
HCD-DX150 US 2-541-507-0[]
HCD-DX150 CND 2-541-507-1[]
HCD-DX150 AUS 2-541-507-2[]
HCD-DX150 MX 2-541-507-3[]
HCD-DX150 EA 2-541-507-4[]
HCD-DX150 E32 2-541-507-5[]
HCD-DX150 SP 2-541-507-6[]
HCD-DX170 US 2-588-786-0[]
HCD-DX170 CND 2-588-786-1[]
HCD-DX250 US 2-588-786-2[]
HCD-DX250 CND 2-588-786-3[]
•Abbreviation
AUS:Australian model.
CND : Canadian model.
E32 : 110 – 240 V AC Area in E model.
EA : Saudi Arabia model.
MX : Mexican model.
SP : Singapore model.
FRONT R FRONT L SURR R SURR L CENTER WOOFER
SPEAKER
Y
P B /C B P R /C R
AUDIO IN
DVD ONLY
VIDEO
VIDEOS(DVD ONLY)
R L
VIDEO/SAT
COMPONENT VIDEO OUT
MONITOR OUT
COAXIAL
AM
FM
75
Part No.
Signal format system
North American, Latin, and Mexican models:
Other models:
Frequency response (at 2 CH STEREO mode)
Tuner section
System
FM tuner section
Tuning range
North American models:
Other models:
Antenna (aerial)
Antenna (aerial) terminals
Intermediate frequency
AM tuner section
Tuning range
North American, Latin, and Mexican models:
Middle eastern models:
Other models:
Antenna (aerial)
Intermediate frequency
Video section
Outputs
(CD: λ= 790 nm)
Emission duration:
continuous
NTSC
NTSC/PAL
DVD (PCM): 2 Hz to 22
kHz (±1.0 dB)
CD: 2 Hz to 20 kHz (±1.0
dB)
PLL quartz-locked digital
synthesizer system
87.5 – 108.0 MHz
(100 kHz step)
87.5 – 108.0 MHz
(50 kHz step)
FM wire antenna (aerial)
75 ohms, unbalanced
10.7 MHz
530 – 1,710 kHz (with the
interval set at 10 kHz)
531 – 1,710 kHz (with the
interval set at 9 kHz)
531 – 1,602 kHz (with the
interval set at 9 kHz)
530 – 1,710 kHz (with the
interval set at 10 kHz)
531 – 1,602 kHz (with the
interval set at 9 kHz)
AM loop antenna (aerial)
450 kHz
Video: 1 Vp-p 75 ohms
S video:
Y: 1 Vp-p 75 ohms
C: 0.286 Vp-p 75 ohms
COMPONENT:
Y: 1 Vp-p 75 ohms
PB/CB, PR/CR: 0.7 Vp-p
75 ohms
General
Power requirements
North American and Mexican models:
Other models:
Power consumption
120 V AC, 60 Hz
220 – 240 V AC, 50/60 Hz
On: 145 W (DAV-DX150)
On: 160 W (DAV-DX170/DX250)
Dimensions (approx.)
Mass (approx.)
Standby: 0.3 W (at the
Power Saving Mode)
430 ×88 ×415 mm
(17 ×3 1/2×16 3/8inches)
(w/h/d) incl. projecting
parts
4.9 kg (10 lb 13 oz) (DAV-DX150)
5.0 kg (11 lb 1 oz) (DAV-DX170/DX250)
Design and specifications are subject to change
without notice.
DVD system
Laser Semiconductor laser
(DVD: λ= 650 nm)
Central/South American models:
110 – 240 V AC, 50/60 Hz

3
HCD-DX150/DX170/DX250
CAUTION
Use of controls or adjustments or performance of procedures
otherthanthosespecifiedhereinmayresultinhazardous radiation
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.
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 CHECK-OUT
After correcting the original service problem, perform the following
safety check before releasing the set to the customer:
Check the antenna terminals,metal trim, “metallized” knobs, screws,
and all other exposed metal parts forAC leakage.
Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.
1. Acommercialleakage tester,such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’instructions to use these
instruments.
2. A battery-operatedAC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM orbattery-operatedAC voltmeter. The “limit” indication
is 0.75V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2VAC range are suitable. (See
Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k Ω 0.15 µ FAC
voltmete
r
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE
FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT
DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER
PRODUCT MARKING is
located on the rear exterior.

4
HCD-DX150/DX170/DX250
TABLE OF CONTENTS
1. SERVICING NOTE ................................................... 5
2. GENERAL ................................................................... 8
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 10
3-2. Case, Front PanelAssy .................................................... 11
3-3. FL Board, H/P Board....................................................... 12
3-4. STBY Board, LED Board, KEY Board .......................... 12
3-5. IO Board, DC Fan ........................................................... 13
3-6. DMB10 Board ................................................................. 13
3-7. MAIN Board.................................................................... 14
3-8. MD COVER .................................................................... 14
3-9. DVD Mechanism Deck (CDM81C-DVBU101) ............. 15
3-10. Tray.................................................................................. 16
3-11. MOTOR Board, M761 (LD/ST MOTOR),
M762 (BU U/D MOTOR) ............................................... 16
3-12. Base Unit (DVBU101) .................................................... 17
3-13. Optical Pick-up (KHM-310CAB/C2NP) ........................ 17
3-14. Gear (Sub Tray 1), Gear (Sub Tray 2) ............................. 18
3-15. Lever Assy ....................................................................... 18
3-16. Stocker Section ................................................................ 19
3-17. Cam (Stocker).................................................................. 19
3-18. Gear (Stocker 3) .............................................................. 20
3-19. Rotary Encoder (MD)...................................................... 20
3-20. Gear (BU1) ...................................................................... 21
4. TEST MODE ............................................................... 22
5. DIAGRAMS
5-1. Block Diagram – RF/SERVO Section –......................... 28
– VIDEO Section – .......................................................... 29
– AMP Section –.............................................................. 30
– AUDIO Section –.......................................................... 31
– POWER Section – ........................................................ 32
5-2. Printed Wiring Board – DVD Mechanism Section – ...... 33
5-3. Schematic Diagram – DVD Mechanism Section – ........ 34
5-4. Printed Wiring Board – DMB10 Section (Side A) – ...... 35
5-5. Printed Wiring Board – DMB10 Section (Side B) – ...... 36
5-6. Schematic Diagram – DMB10 Section (1/4) – .............. 37
5-7. Schematic Diagram – DMB10 Section (2/4) – .............. 38
5-8. Schematic Diagram – DMB10 Section (3/4) – .............. 39
5-9. Schematic Diagram – DMB10 Section (4/4) – .............. 40
5-10. Printed Wiring Board – MAIN Section (Side A) – ......... 41
5-11. Printed Wiring Board – MAIN Section (Side B) – ......... 42
5-12. Schematic Diagram – MAIN Section (1/7) – ................. 43
5-13. Schematic Diagram – MAIN Section (2/7) – ................. 44
5-14. Schematic Diagram – MAIN Section (3/7) – ................. 45
5-15. Schematic Diagram – MAIN Section (4/7) – ................. 46
5-16. Schematic Diagram – MAIN Section (5/7) – ................. 47
5-17. Schematic Diagram – MAIN Section (6/7) – ................. 48
5-18. Schematic Diagram – MAIN Section (7/7) – ................. 49
5-19. Printed Wiring Board – PANEL Section – ...................... 50
5-20. Schematic Diagram – PANEL Section – ........................ 51
5-21. Printed Wiring Board – IO Section – .............................. 52
5-22. Schematic Diagram – IO Section – ................................ 53
6. EXPLODEDVIEWS
6-1. Overall Section ................................................................ 66
6-2. Front Panel Section ......................................................... 67
6-3. Chassis Section................................................................ 68
6-4. DVD Mechanism Deck Section-1
(CDM81C-DVBU101) .................................................... 69
6-5. DVD Mechanism Deck Section-2
(CDM81C-DVBU101) .................................................... 70
6-6. DVD Mechanism Deck Section-3
(CDM81C-DVBU101) .................................................... 71
6-7. Base Unit (DVBU101) .................................................... 72
7. ELECTRICAL PARTS LIST .................................. 73
Ver. 1.2

5
HCD-DX150/DX170/DX250
SECTION 1
SERVICING NOTE
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 section adjustment”and check
that the S curve waveform is output several times.
DISC SLOT LOCK
The disc slot lock function for the antitheft of an demonstration
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 x stick and the A 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 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.
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, When a specific operation
requires use of the operating buttons of the remote commander,
“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.
Note 3: If the disc tray does not open and the message “LOCKED”
appears, press the x tick and the Abutton 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 on DMB10 board or DMB11 board replacement
New part of EEP ROM (IC103) on the DMB10 board or DMB11
board cannot be used. Therefore, if the mounted DMB10 board
(A-1088-070-A, etc.) is replaced, exchange new EEP ROM (IC103)
with that used before the replacement.
When the self-diagnosis function is activated to
prevent the system from malfunctioning, a 5-
character service number (e.g., C 13 50) with a
combination of a letter and 4 digits appears on
the screen and the front panel display. In this
case, check the following table.
Self-diagnosis Function
(When letters/numbers appear in the
display)
First 3
characters of
the service
number
Cause and/or corrective action
C 13 The disc is dirty.
,Clean the disc with a soft cloth
(page 80).
C 31 The disc is not inserted correctly.
,Restartthe system, then re-insert
the disc correctly.
E XX
(xx is a number) To prevent a malfunction, the
system has performed the self-
diagnosis function.
,Contact your nearest Sony
dealer or local authorized Sony
service facility and give the 5-
character service number.
Example: E 61 10
C:13:50
Ver. 1.2

6
HCD-DX150/DX170/DX250
• SERVICE POSITION-2 (DMB10 BOARD)
• SERVICE POSITION-1 (DVD MECHANISM DECK)
DVD MECHANISM DECK
Insulation seat
DMB10 board

7
HCD-DX150/DX170/DX250
• SERVICE POSITION-3 (MAIN BOARD)
• SERVICE POSITION-4 (FL BOARD)
MAIN board
Extension cable
(J-2501-244-A 21p)
FL board

8
HCD-DX150/DX170/DX250 SECTION 2
GENERAL This section is extracted
from instruction manual.
For more information, refer to the pages indicated in parentheses.
Front panel
A"/1(on/standby) (25, 29, 70)
BDisc tray (29)
CDISC 1-5 (29)
DA(open/close) (29, 70)
EH(play) (29)
FX(pause) (30)
Gx(stop) (30, 70)
H./>(30)
IFUNCTION (29)
JPHONES jack (29)
KVOLUME (29)
L(remote sensor) (12)
MFront panel display (91)
Index to Parts and Controls
Rear panel
ASPEAKER jacks (14)
BVIDEO/SAT AUDIO IN jacks (21, 23)
CCOMPONENT VIDEO OUT jacks (19)
DMONITOROUT(VIDEO/S VIDEO) jacks
(19)
EAM terminal (18)
FFM 75 COAXIAL jack (18)
FRONT R FRONT L SURR R SURR L CENTER WOOFER
SPEAKER
Y
P B /C B P R /C R
AUDIO IN
DVD ONLY
VIDEO
VIDEOS(DVD ONLY)
R L
VIDEO/SAT
COMPONENT VIDEO OUT
MONITOR OUT
COAXIAL
AM
FM
75

9
HCD-DX150/DX170/DX250
Remote
ATV [/1(on/standby) (64)
BTV/VIDEO (64)
CTUNER MENU (67)
DSLEEP (69)
EDISC SKIP (29)
FPROGRESSIVE (20)
GREPEAT/FM MODE (33, 68)
HTUNER/BAND (68)
INumber buttons (34, 60, 64)
The number 5 button has a tactile dot.*
JCLEAR, -(26, 31, 65)
KTOP MENU (34)
LC/X/x/c/ENTER (25, 31, 55, 60, 66, 70,
71)
MORETURN (35)
NREPLAY, STEP (30)
O.PRESET –, TV CH – (26, 30, 64, 68)
Pm/ SLOW, TUNING – (45, 67)
QH(play) (29)
The H button has a tactile dot.*
RTV (64)
STHEATRE SYNC (65)
T"/1(on/standby) (25, 29, 68)
UAMP MENU (25, 66, 70)
VDSGX (58)
WFUNCTION (20, 29, 57, 66)
XSOUND FIELD (55)
YDISPLAY (68)
ZPICTURE NAVI (39)
wj AUDIO (53)
wk SUBTITLE (59)
wl ANGLE (59)
e; ALBUM –/+ (30, 65)
ea MENU (34)
es MUTING (30)
ed VOLUME, TV VOL +/– (29, 64, 68)
The VOLUME, TV VOL + button has a
tactile dot.*
ef DISPLAY (9, 26, 31, 60, 71)
eg >PRESET +, TV CH + (26, 30, 64, 68)
eh ADVANCE, STEP (30)
ej M/ SLOW, TUNING + (45, 67)
ek x(stop) (30, 60, 68)
el X(pause) (30)
The X button has a tactile dot.*
*Usethe tactile dot as a reference when operating the
system.

10
HCD-DX150/DX170/DX250 SECTION 3
DISASSEMBLY
3-1. DISASSEMBLY FLOW
3-3.FL BOARD, H/P BOARD
(Page 12)
3-4.STBY BOARD, LED BOARD,
KEY BOARD
(Page 12) 3-8.MD COVER
(Page 14)
3-9.DVD MECHANISM DECK
(CDM81C-DVBU101)
(Page 15)
3-10.TRAY
(Page 16)
3-11.MOTOR BOARD
M761 (LD/ST MOTOR),
M762 (BU U/D MOTOR)
(Page 16)
3-12.BASE UNIT (DVBU101)
(Page 17)
3-13.OPTICAL PICK-UP
(KHM-310CAB/C2NP)
(Page 17)
3-5.IO BOARD, DC FAN
(Page 13)
3-7.MAIN BOARD
(Page 14)
3-6.DMB10 BOARD
(Page 13)
3-2.CASE, FRONT PANEL ASSY
(Page 11)
SET
•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.
3-14.GEAR (SUB TRAY 1),
GEAR (SUB TRAY 2)
(Page 18)
3-15.LEVER ASSY
(Page 18)
3-16.STOCKER SECTION
(Page 19) 3-19.ROTARY ENCODER (MD) (Page 20)
3-17.CAM (STOCKER)
(Page 19) 3-20.GEAR (BU1) (Page 21)
3-18.GEAR (STOCKER 3)
(Page 20)

11
HCD-DX150/DX170/DX250
3-2. CASE, FRONT PANEL ASSY
Note: Follow the disassembly procedure in the numerical order given.
4 two screws (CASE3 TP2)
5 two screws
(CASE3 TP2)
6 six screws (+BV 3
)
qa three screws (+BV 3)
7 case
qf front panel assy
3 DVD lid assy
qd claw
qs claw
8 w ire (flat type)
19p(CN509)
9 connector
(CNP903)
0 screw (+BV 3)
DVD lid
tape
gear
tweezers
1Insert tip of tweezers through the hole of bottom plate,
and roate the gear in the counter-clockwise direction.
2Attach an adhesive tape on the DVD LID and draw it out.

12
HCD-DX150/DX170/DX250
3-4. STBY BOARD, LED BOARD, KEY BOARD
3-3. FL BOARD, H/P BOARD
0 shield (front)
1 froating screw
(PTPWHM 2.6)
2 H/P board
qf FL board
6 shee
t
3 knob (vol)
4 nut
qd connector
(CN805)
5 sheet
qs wire (flat type)
19p(CN801)
qa wire (flat type)
9p(CN802)
9 wire (flat type
)
9p(CN803)
7 two tapping screws
(+P2.6
× 6)
8 four screws (+BV 3)
5 three screws (+BV 2.6
)
9 two screws (+BV 2.6)
8 button (disc) assy
4 button (play)
qd button (power)
3 KEY board
7 LED board
qs STBY board
qa connector
(CN804)
0 screw (+BV 2.6)
6 three screws (+BV 2.6)
1 three screws (+BV 2.6)
2 four screws (+BV 2.6)

13
HCD-DX150/DX170/DX250
3-5. IO BOARD, DC FAN
3-6. DMB10 BOARD
2 connector
(CN300)
1 connector
(CN901)
8 DC fan
qa tuner
qf IO board
back panel
6 wire (flat type)
13p(CN201)
0 wire (flat type)
11p(CN101)
5 wire (flat type)
23p(CN601)
qs screw (+BV 3)
qd two screws (+BV 3)
4 three screws (+BV 3)
3 three screws
(+BV 3)
9 two screws (+BV 2.6 × 6
)
7 two screws (BVTT 4 × 8)
0 DMB10 board
2 connector
(CN201)
7 connector
(CN401)
3 wire (flat type)
24p(CN101)
4 wire (flat type)
13p(CN4802)
6 wire (flat type)
11p(CN4501)
5 wire (flat type)
7p(CN302)
1 wire (flat type)
13p(CN106)
8 two screws (+BV 3)
9 two screws (+BV 3
)

14
HCD-DX150/DX170/DX250
3-8. MD COVER
3-7. MAIN BOARD
qs MAIN board
3 heat sink (AMP)
4 wire (flat type)
11p(CN505)
5 wire (flat type)
21p(CN508)
6 wire (flat type)
7p(CN503)
7 wire (flat type)
23p(CN507)
8 wire (flat type)
11p(CN504)
qa two screws (+BV 3
)
0 two screws (+BV 3)
1 two screws (+BV 3)
9 four screws (+BV 3)
2 screw (BVTP 3 × 12)
2 MD COVE
R
1 t hree screws (+BV 3)

15
HCD-DX150/DX170/DX250
3-9. DVD MECHANISM DECK (CDM81C-DVBU101)
4 DVD mechanism dec
k
(CDM81C-DVBU101)
2 w ire (flat type)
21p(CN508)
1 connector
(CN201)
3 five screws (+BV 3)

16
HCD-DX150/DX170/DX250
3-11. MOTOR BOARD, M761 (LD/ST MOTOR), M762 (BU U/D MOTOR)
3-10. TRAY
1 two screws
(+BTP 2.6
× 8)
2 two screws
(+BTP 2.6
× 8)
3 bracket
4
5
tray
1 screw
(+BTP 2.6
× 8)
2 bracket
3 screw
(+BTP 2.6 × 8)
4 MOTOR board
5 Remove soldering from the two points.
6 M761 (LD/ST MOTOR)
7 Remove soldering from the two points.
8 M762 (BU U/D MOTOR)

17
HCD-DX150/DX170/DX250
3-12. BASE UNIT (DVBU101)
3-13. OPTICAL PICK-UP (KHM-310CAB/C2NP)
1 two floating screw
s
(+PTPWH2.6)
2 floating screw
(+PTPWH2.6)
3 base unit (DVBU101)
1 two screws
(+BTP 2.6
× 8 )
2 two screws
(+BTP 2.6
× 8 )
6 holder (310) assy
4 insulator screw
7 insulator screw
qd optical pick-up
(KHM-310CAB/C2NP)
5
0
insulator
qa insulator
8 insulator scre
w
qs insulator
3 insulator screw
9 insulator

18
HCD-DX150/DX170/DX250
3-14. GEAR (SUBTRAY 1), GEAR (SUBTRAY 2)
1 five screws
(+PTPWH 2.6
× 8)
2 gear (sub tray 2)
3 gear (sub tray 2)
4 three gears
(sub tray 1)
gear (sub tray 2)
gear (sub tray 2)
gear (sub tray 1)
PRECAUTION DURING GEAR (SUBTRAY 1/2) INSTALLATION
Align the marks of the gears as shown in the illustration.
3-15. LEVER ASSY
1 screw
(+PTPWH 2.6 × 8)
3 floating screw
(+PTPWH M2.6)
5 lever (sub tray)
lever (sub tray)
6 lever (release)
lever (release)
7 lever (mode)
cam (BU)
lever (mode)
2 shutter (tray)
4
lever (sub tray)
shutter (tray)
When re-assembling, insert the lever (sub tray)
between the bosses of the shutter (tray).
boss
boss
Before re-assembling, slide the cam (BU)
in the direction of the arrow.
Before re-assembling, align the lever (release)
and the lever (sub tray) with the lever (mode)
as shown in the illustration.
dowel dowel

19
HCD-DX150/DX170/DX250
3-16. STOCKER SECTION
2 stocker section
1 Rotate the gear (SS3) in the
direction of the arrow.
3-17. CAM (STOCKER)
5 two screws
(+PTPWH 2.6 × 8)
6 two cams
(stocker)
8 cam
(stocker)
cam (stocker)
cam (stocker)
cam (stocker)
hole
gear
(stocker 2)
gear
(stocker 2)
gear
(stocker 2)
gear (stocker 3)
2 tension spring (SW)
4 lever (SW)
1 screw
(+PTPWH 2.6 × 8)
7 screw
(+PTPWH 2.6 × 8)
3 hook
PRECAUTION DURING CAM (STOCKER) INSTALLATION
Before installing the cams (stocker), fix the gear (stocker 3) in
the manner so that the hole of the gear (stocker 3) should be
aligned with the hole of the chassis located beneath
the gear (stocker 3). Be sure to install the cams (stocker) in
such a way that the grooves of the cams (stocker) face
the direction of the arrows.

20
HCD-DX150/DX170/DX250
3-18. GEAR (STOCKER 3)
1 screw
(+PTPWH 2.6
× 8)
2 gear (stocker 3)
gear (stocker 3)
(reverse-side)
rotary encoder
(ST U/D encoder)
PRECAUTION DURING GEAR (STOCKER 3) INSTALLATION
Be sure to align the rib of the gear (stocker 3) with the groove
of the rotary encoder.
groove
rib
3-19. ROTARY ENCODER (MD)
1 three screws
(+BTP 2.6
× 8)
2 rotary encoder (MD)
rotary encoder (MD)
gear (BU1)
PRECAUTION DURING ROTARY ENCODER (MD) INSTALLATION
cam (BU)
Slide the cam (BU) in the direction of the arrow so that the mark
of the gear (BU1) can be seen. Engage the gears while aligning
the mark of the gear (BU1) with the protruding part of the
rotary encoder.
protruding part
mark