Sony HCD-EA20 User manual
HCD-EA20
AEP Model
UK Model
SERVICE MANUAL
CD/DVD RECEIVER
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-961-254-01
2003J1678-1
© 2003.10
HCD-EA20istheamplifier,DVD/CD
and tuner section in DAV-EA20.
Ver 1.0 2003. 10
SPECIFICATIONS
Amplifier section
Stereo mode (rated) 25 W + 25 W (6 ohms at 1
kHz, THD 10 %)
Surround mode (reference)Front: 25 W + 25 W
Center*: 25 W
Surround*: 25 W + 25 W
(6 ohms at 1 kHz, THD
10 %)
Subwoofer*: 50 W
(8 ohms at 100 Hz, THD
10 %)
*Depending on the sound field settings and the source,
there may be no sound output.
Inputs VIDEO:
Sensitivity: 150 mV
Impedance: 50 kilohms
SAT:
Sensitivity: 300 mV
Impedance: 50 kilohms
AUDIO IN:
sensitivity: 150 mV
Impedance: 50 kilohms
Outputs VIDEO (AUDIO OUT):
Voltage: 1 V
Impedance: 1 kilohm
Phones Accepts low-and high-
impedance headphones.
DVD system
Laser Semiconductor laser
(DVD: λ= 650 nm)
(CD: λ= 780 nm)
Emission duration:
continuous
Signal format system NTSC or NTSC/PAL
Frequency response (at 2CH STEREO mode)
DVD (PCM): 2 Hz to 22
kHz (±1.0 dB)
CD: 2 Hz to 20 kHz (±1.0
dB)
Harmonic distortion Less than 0.03 %
Tuner section
System PLL quartz-locked digital
synthesizer system
FM tuner section
Tuning range 87.5 – 108.0 MHz (50 kHz
step)
Aerial FM wire aerial
Aerial terminals 75 ohms, unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range 531 – 1,602 kHz (with the
interval set at 9 kHz)
Aerial AM loop aerial
Intermediate frequency 450 kHz
Video section
Inputs Video: 1 Vp-p 75 ohms
Outputs Video: 1 Vp-p 75 ohms
General
Power requirements 230 V AC, 50/60 Hz
Power consumption 130 W (230 V AC)
0.3 W (230 V AC) (at the
Power Saving Mode)
Dimensions (approx.) 355×80×395 mm(w/h/d)
incl. projecting parts
Mass (approx.) 6.4 kg
Operating temperature 5°C to 35°C
Operating humidity 5 % to 90 %
Design and specifications are subject to change
without notice.
Model Name Using Similar Mechanism HCD-SA30
Mechanism Type
CDM77A-DVBU20
Optical Pick-up Name
TDP022W
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TEL 13942296513 QQ 376315150 892498299
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2
HCD-EA20
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
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 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.
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.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINEWITH
MARK 0ON THE SCHEMATIC DIAGRAMS AND INTHE 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.
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 viscous (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.
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3
HCD-EA20
TABLE OF CONTENTS
1. SERVICING NOTE ·························································· 4
2. GENERAL ·········································································· 7
3. DISASSEMBLY ································································ 9
3-1. CASE ··········································································· 10
3-2. FRONT PANEL SECTION ········································· 11
3-3. PANEL BOARD, STANDBY BOARD ······················· 11
3-4. UCOM BOARD··························································· 12
3-5. DMB03 BOARD·························································· 12
3-6. I/O BOARD ································································· 13
3-7. AMP BOARD, SUB TRANSFORMER BOARD ······· 14
3-8. DVD MECHANISM (CDM77A-DVBU20) ··············· 15
3-9. TRAY (AU) ·································································· 15
3-10. MS-128 BOARD························································ 16
3-11. BASE UNIT ······························································· 16
3-12. OPTICAL PICK-UP (TDP022W) ····························· 17
4. TEST MODE···································································· 18
5. ELECTRICAL ADJUSTMENT ·································· 26
6. DIAGRAMS
6-1. CIRCUIT BOARDS LOCATION ······························· 27
6-2. BLOCK DIAGRAMS – RF/SERVO SECTION –······ 29
– VIDEO SECTION – ················································· 30
– AUDIO SECTION –················································· 31
– AMP SECTION –····················································· 32
– POWER SUPPLY SECTION –································ 33
6-3. PRINTED WIRING BOARD – RF SECTION –········ 34
6-4. SCHEMATIC DIAGRAM – RF SECTION –············· 35
6-5. PRINTED WIRING BOARD
– LOADING SECTION – ··········································· 36
6-6. SCHEMATIC DIAGRAM
– LOADING SECTION – ··········································· 36
6-7. PRINTED WIRING BOARD
– DMB SECTION (SIDE A) –···································· 37
6-8. PRINTED WIRING BOARD
– DMB SECTION (SIDE B) –···································· 38
6-9. SCHEMATIC DIAGRAM
– DMB SECTION (1/8) – ·········································· 39
6-10.SCHEMATIC DIAGRAM
– DMB SECTION (2/8) – ··········································· 40
6-11.SCHEMATIC DIAGRAM
– DMB SECTION (3/8) – ··········································· 41
6-12.SCHEMATIC DIAGRAM
– DMB SECTION (4/8) – ··········································· 42
6-13.SCHEMATIC DIAGRAM
– DMB SECTION (5/8) – ··········································· 43
6-14.SCHEMATIC DIAGRAM
– DMB SECTION (6/8) – ··········································· 44
6-15.SCHEMATIC DIAGRAM
– DMB SECTION (7/8) – ··········································· 45
6-16.SCHEMATIC DIAGRAM
– DMB SECTION (8/8) – ··········································· 46
6-17.PRINTED WIRING BOARD
– UCOM SECTION – ················································· 47
6-18.SCHEMATIC DIAGRAM
– UCOM SECTION – ················································· 48
6-19. PRINTED WIRING BOARD
– I/O SECTION –························································ 49
6-20.SCHEMATIC DIAGRAM
– I/O SECTION (1/2) – ··············································· 50
6-21.SCHEMATIC DIAGRAM
– I/O SECTION (2/2) – ··············································· 51
6-22.PRINTED WIRING BOARD
– AMP/SUB TRANSFORMER SECTION – ············· 52
6-23.SCHEMATIC DIAGRAM
– AMP/SUB TRANSFORMER SECTION (1/2) – ···· 53
6-24.SCHEMATIC DIAGRAM
– AMP/SUB TRANSFORMER SECTION (2/2) – ···· 54
6-25.PRINTED WIRING BOARD
– PANEL SECTION –················································· 55
6-26.SCHEMATIC DIAGRAM
– PANEL SECTION –················································· 56
6-27.IC BLOCK DIAGRAMS ············································ 59
6-28.IC PIN FUNCTION DESCRIPTION ························· 68
7. EXPLODED VIEWS
7-1. CASE SECTION ························································· 80
7-2. FRONT PANEL SECTION········································· 81
7-3. CHASSIS SECTION··················································· 82
7-4. DVD MECHANISM SECTION
(CDM77A-DVBU20) ·················································· 83
8. ELECTRICAL PARTS LIST ······································· 84
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4
HCD-EA20
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.
JIG ON REPAIRING
When repairing this set, etc., connect the extension cable as the
figure shown below.
•Service position of mechanism block
MODEL IDENTIFICATION
— BACK PANEL —
Part No.
Model
AEP, UK models
Russian model
PARTS No.
4-249-697-0s
4-249-697-1s
SECTION 1
SERVICING NOTE
MS-128 board
J-2501-212-A (1mm/5P/L300) DVD mechanism section
(CDM77A-DVBU20)
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5
HCD-EA20
•Service position of UCOM board
•Service position of AMP board
UCOM board
J-2501-212-A (1mm/5P/L300)
J-2501-198-A (1mm/17P/L300)
J-2501-200-A (1mm/11P/L300)
AMP board
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6
HCD-EA20
•Service position of DMB03 board
UCOM board
DMB03 board
J-2501-167-A (1.25mm/17P/L300)
UCOM board
DMB03 board
J-2501-188-A (1mm/15P/L400)
J-2501-075-A (1mm/21P/L500)
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7
HCD-EA20
SECTION 2
GENERAL
Front Panel
A"/1(power) (21)
BSTANDBY indicator (21)
C(remote sensor) (11)
DDisc tray (21)
EFront panel display (70)
FVOLUME control (21, 62)
GFUNCTION (21, 52, 53, 54)
HPHONES jack (21)
I./>, PREV/NEXT, PRESET –/+
(22, 23, 52, 54)
Jx(stop) (22)
KX(pause) (22)
LH(play) (21)
MA(open/close) (21)
This section is extracted
from instruction manual.
Rear Panel
AAM terminals (15)
BVIDEO (ANALOGUE OUT) jacks (17)
CVIDEO/SAT (ANALOGUE IN) jacks (17)
DTV jacks (17)
EMONITOR OUT (VIDEO/S VIDEO) jacks
(17)
FSPEAKER jacks (12)
GFM 75ΩCOAXIAL jack (15)
COAXIAL
AM
FRONT R FRONT L
WOOFERCENTER
SURR L
SURR R
SPEAKER
S VIDEO
(DVD ONLY)
VIDEO
AUDIO IN
MONITOR OUT
TV
R
L
VIDEO
VIDEO OUT
AUDIO OUT
VIDEO/SAT
IN
AUDIO IN
L
R
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8
HCD-EA20
Remote
Note
This remote control glows in the dark. However,
before glowing, the remote must be exposed tolight for
a while.
ATV [/1(on/standby) (51)
BSLEEP (56)
CTV/VIDEO (51)
DPLAY MODE (28, 29)
EMENU (52, 54)
FREPEAT/FM MODE (28, 30, 53)
GCLEAR (28, 29, 30, 32)
HAUDIO (39)
IANGLE (44)
JSUBTITLE (45)
KVOL +/– (51, 53)
L./>, PREV/NEXT, TV CH –/+,
PRESET –/+ (22, 23, 51, 52, 53, 54)
MHPLAY/SELECT (21, 23, 28, 29, 30,
47)
NDVD TOP MENU/ALBUM– (23, 25, 26)
ODVD DISPLAY (25, 26, 30, 32, 37, 38, 39,
44, 45)
PC/X/x/c/ENTER (23, 25, 26, 27, 28, 30,
32, 39, 44, 45, 46, 47, 52, 54)
QDVD SETUP (47, 57)
R"/1(standby) (21, 52)
SDISPLAY (34, 37, 53)
TDDSG (43)
UMUTING (22)
VNIGHT MODE (43)
WAUTO FORMAT DIRECT (41)
XSOUND FIELD +/– (41, 42)
YNumber buttons (23, 28, 32, 44, 46, 47,
51)
ZFUNCTION (21, 52, 53, 54)
wj TUNER/BAND (52, 53)
wk ENTER (51, 52)
wl COMMAND MODE switch (11, 51)
e; m/M// SLOW, TUNING –/+ (31,
52)
ez xSTOP (23, 46)
es XPAUSE (22)
ed DVD MENU/ALBUM+ (23, 25, 26)
ef ORETURN (23, 25, 26, 28, 32, 46, 47)
eg DIMMER (56)
123
456
7
>
10 10/0
8 9
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9
HCD-EA20
SECTION 3
DISASSEMBLY
•The equipment can be removed using the following procedure.
CASE
DVD MECHANISM
(CDM77A-DVBU20)
PANEL BOARD,
STANDBY BOARD
FRONT PANEL
SECTION UCOM BOARD
TRAY (AU)
OPTICAL PICK-UP
(TDP022W)
MS-128 BOARD BASE UNIT
DMB03 BOARD
I/O BOARD
AMP BOARD,
SUB TRANSFORMER BOARD
SET
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TEL 13942296513 QQ 376315150 892498299
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11
HCD-EA20
3-2. FRONT PANEL SECTION
3-3. PANEL BOARD, STANDBY BOARD
1
connector
(CN401)
4
three screws
(+BVTP3
×
8)
6
front panel section
5
two claws
2
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ire (flat type)
17core (CN601)
3
chassis groun
d
4
five screws
(BVTP2.6
×
8)
3
two screws
(BVTP2.6
×
8
)
8
front panel assy
1
vol knob
5
w
ire (flat type)
17core (CN801)
6
STANDBY board
7
PANEL board
2
nut
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12
HCD-EA20
3-4. UCOM BOARD
5
connector
(CN653)
4
connector
(CN652)
3
connector
(CN651)
2
w
ire (flat type)
5core (CN654)
1
w
ire (flat type)
17core (CN601)
6
w
ire (flat type)
11core (CN621)
8
w
ire (flat type)
5core (CN611)
7
w
ire (flat type)
17core(CN631)
q;
UCOM board
9
four screws
(+BVTP3
×
8)
3-5. DMB03 BOARD
5
connector
(CN102)
6
w
ire (flat type)
21core (CN107)
7
w
ire (flat type)
5core (CN101)
8
w
ire (flat type)
15core (CN105)
4
w
ire (flat type)
29core (CN501)
9
DMB03 board
1
two screws
(+BVTP3
×
8)
2
two screws
(+BVTP3
×
8)
3
heat sink
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13
HCD-EA20
3-6. I/O BOARD
5
four screws
(+BVTP3
×
8)
9
four screws
(+BVTP3
×
8)
7
two screws
(+BVTP3
×
8)
qa
two screws
(+BVTP3
×
8)
8
tuner unit
qs
DC fan
qd
back panel
4
connector
(CN421)
1
w
ire (flat type)
17core (CN101)
2
w
ire (flat type)
9core (CN102)
3
w
ire (flat type)
15core (CN103)
6
w
ire (flat type)
11core (CN104)
0
I/O board
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TEL 13942296513 QQ 376315150 892498299
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14
HCD-EA20
3-7. AMP BOARD, SUBTRANSFORMER BOARD
qs
AMP board
qd
SUB TRANSFORMER board
9
five screws
(+BVTP3
×
8)
qa
five screws
(+BVTP3
×
8)
qf
four screws
8
power cord
qg
power transformer
(main) (T101)
0
two screws
(sumitite 3
×
6)
6
connector
(CN951)
4
connector
(CN652)
5
connector
(CN401)
3
connector
(CN651)
7
connector
(CN902)
2
w
ire (flat type)
11core (CN952)
1
w
ire (flat type)
25core (CN302)
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TEL 13942296513 QQ 376315150 892498299
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15
HCD-EA20
3-8. DVD MECHANISM (CDM77A-DVBU20)
3-9.TRAY (AU)
4
tray (AU)
3
two claws
bottom side
1
2
6
two claws
7
CD lid
4
w
ire (flat type)
5core (CN001)
5
w
ire (flat type)
29p (CN002)
3
three screws
(sumitite 3
×
6)
8
DVD mechanism
(CDM77A-DVBU20)
1
two screws
(+BVTP2.6
×
8)
2
cover
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TEL 13942296513 QQ 376315150 892498299
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16
HCD-EA20
3-10. MS-128 BOARD
3-11. BASE UNIT
1
belt
2
four claws
3
MS-128 board
5
two claws
6
base unit
2
claw
4
gear
3
puley
1
belt
7
chuck cam
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TEL 13942296513 QQ 376315150 892498299
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17
HCD-EA20
3-12. OPTICAL PICK-UP (TDP022W)
3
w
ire (flat type)
24p (CN001)
2
flexible board
(CN003)
5
three step screws (M)
8
optical pick-up
(TDP022W)
1
claw
6
holder (DVU1)
7
three insulators
4
RF board
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TEL 13942296513 QQ 376315150 892498299
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18
HCD-EA20 SECTION 4
TEST MODE
[KEYTEST]
*Key check and volume check.
Procedure:
1. Press the POWER button to turn the set on.
2. To enter the test mode, press three buttons of x, A and
FUNCTION simultaneously.
3. In the key check mode, the fluorecent indicator displays
“KEY00VOL0”. Each timea button is pressed, “KEY**”value
increases. However, once a button is pressed, it is no longer
taken into account.
4. “VOL*” value increases like 0, 1, 2, 3, ... if rotating the
VOLUME knob clockwise, or it decreases like 0, 9, 8, 7, ... if
rotating counter-clockwise.
5. To exit from this mode, press three buttons x ,A and
FUNCTION simultaneously.
[VERSION DISPLAY MODE]
*The software version is displayed.
Procedure:
1. Press three buttons of X, NEXT >and FUNCTION
simultaneously.
2. The microcomputer version and destination are displayed.
3. Press the DISPLAY button on the remote commander. The
STR version is displayed.
4. Press the DISPLAY button on the remote commander. The
DVD version is displayed.
5. Each time the DISPLAY button on the remote commander is
pressed, the display changes in the order of microcomputer
version/destination, STR and DVD.
6. To exit from this mode, press the POWER button.
[DISPLAYTEST MODE]
*Fluorescent segments are tested when this test is activated.
Procedure:
1. Press three buttons of X, .PREV and FUNCTION
simultaneously.
2. All segments are turned on.
3. When the DISPLAY button on the remote commander is
pressed, all segments are turned off.
4. Press the DISPLAY button on the remote commander, the
display will light up as follows and confirm the display.
5. Press the DISPLAY button on the remote commander, the
display will light up as follows and confirm the display.
6. Every pressing of the DISPLAY button on the remote
commander turns on each segments in the same order.
7. To exit from this mode, press the POWER button.
[AMPTEST MODE]
*SOUND FIELD and volume function is tested.
Note: In advance of Amp test mode SOUND FIELD is set except AFD
AUTO.
Procedure:
1. Press three buttons of x , NEXT >and H
simultaneously.
2. Everytime the SOUND FIELD+ or SOUNDFIELD - button
on the remote commander is pressed, the following items
changes in the order as shown below.
“SWAP F2S” (Lch/Rch inputs are output to both FRONT Lch/
Rch and SURR Lch/Rch.)
“SWAP F2CW” (Lch input is output to CENTER and Rch
input is output to WOOFER.)
“SWAP FLL” (Lch or Rch input is output to all speakers.)
“EQ MIN” (Bass and treble equalizers are set to -6dB.)
“EQ MAX” (Bass and treble equalizers are set to +6dB.)
“SRAM CHECK” (Not for service)
3. In the case of headphone inserted, every time the SOUND
FIELD + or SOUND FIELD - button on the remote
commander is pressed, the following items changes in theorder
as shown below.
“HP 2CH”
“HP SURR”
4. Each time the DDSG button on the remote commander is
pressed, DDSG will change to on or off.
5. Each time the NIGHT MODE button on the remote
commander is pressed, NIGHT MODE will change to on or
off.
6. When the VOLUME knob is turned clockwise or the VOL +
button on the remote commander is pressed, volume goes from
“VOLUME MIN” to “VOLUME 21”.
7. When the VOLUME knob is turned clockwise or the VOL +
button on the remote commander is pressed again, volume goes
to “VOLUME MAX”.
8. When the VOLUME knob is turned counter-clockwise or the
VOL - button on the remote commander is pressed, volume
goes to “VOLUME 21”.
9. When the VOLUME knob is turned counter-clockwise or the
VOL - button on the remote commander is pressed again,
volume goes to “VOLUME MIN”.
10. To exit from this mode, press the POWER button.
[FORCED RESET MODE]
Procedure:
1. Pressthree buttonsof X, FUNCTION and Asimultaneously.
2. The set is turned off and microcomputer is reset.
[DVD REPEAT 5TIMES LIMIT RELEASE MODE]
Procedure:
1. Set the FUNCTION to DVD.
2. Press three buttons of x, NEXT >and FUNCTION
simultaneously.
3. DVD repeat 5 times limit is released.
IIPRO LOGIC
DIGITAL
MUTING
SLEEP
VCDJPEG
STEREOREP 1 TUNED
PBC
MONO
AUTO
NTSCTRAKTITLE CHAP DDSG
NX
NIGHTALBM
ALBM
SHUF
MP3 MULTIPGM
kHz
MHz
a
a
dts
N
II
MUTING
V
REP TUNED
PBCTRAK CHAP NIGHT
ALBM
SHUF
MP3PGM
kHz
dts
X
PRO LOGIC
DIGITAL
SLEEP
CDJPEG
STEREO1
MONO
AUTO
NTSCTITLE DDSGALBM MULTI
MHz
a
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Q
Q
TEL 13942296513 QQ 376315150 892498299
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19
HCD-EA20
[COLOR SYSTEM SELECTION]
*Color system can be changed to PAL or NTSC.
Procedure:
1. Set the FUNCTION to DVD.
2. Turn off the main power.
3. Press two buttons .PREV and POWER simultaneously.
4. The color system is changed to PAL or NTSC.
[DISCTRAY LOCK]
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
Setting Procedure :
1. Press the POWER button to turn the set on.
2. Presstwobuttonsof xand Asimultaneously for fiveseconds.
3. The message “LOCKED” is displayed and the tray is locked.
Releasing Procedure :
1. Presstwobuttonsof xand Asimultaneously forfiveseconds
again.
2. The message “UNLOCKED” is displayed and the tray is
unlocked.
Note: When “LOCKED” is displayed, the tray lock is not released
by turning power on/off with the POWER button.
[DVD SERVICE MODE (OSD)]
Procedure:
1. Press the POWER button on the main unit or the ?/1 button
on the remote commander to turn the set on.
2. Set the FUNCTION to DVD.
3. While pressing two buttons of xand A, turn the VOLUME
knob clockwise to enter the test mode.
4. The message “SERVICE IN” is displayed on the display. The
Test Mode Menu is displayed on the TV screen.
5. To execute each function, select the number on the remote
commander.
6. See the following section for explanation in detail.
7. To exit from this mode, press the POWER button.
[INTERLACE FORCED SETTING MODE]
*The video signal format is forced to set to interlace.
Procedure:
1. Set the FUNCTION to DVD.
2. Press three buttons of x, .PREV and FUNCTION
simultaneously.
3. The video signal format is forced to set to interlace.
[GENERAL DESCRIPTION]
The Test Mode allows you to make diagnosis and adjustment easily
using the remote commander and monitor TV. The instructions,
diagnostic results, etc. are given on the on-screen display (OSD).
[TEST DISC LIST]
Use the following test disc on test mode.
TDV-520CSO (DVD-SL): PART No. J-2501-236-A
LUV-P01 (CD): PART No. 4-999-032-01
TDV-540C (DVD-DL): PART No. J-2501-235-A
Note: Do not use exiting test disc for DVD.
[STARTING TEST MODE]
1. Press the POWER button to turn the power on, and set the
function to DVD.
2. While pressing the xand Abutton, turn the VOLUME
knob clockwise to enter the test mode.
3. It displays “SERVICE IN” on the fluorescent indicator tube,
and displays the Test Mode Menu on the monitor screen as
follows. (At the bottom of the menu screen, the model name
and revision number are displayed)
Test Mode Menu
0. Syscon Diagnosis
1. Drive Auto Adjustment
2. Drive Manual Operation
3. Mecha Aging
4. Emergency History
5. Mecha Error History
6. Version Information
7. Video Level Adjustment
Exit: POWER Key
Model :DAV-EA20 xx
Revision :x.xx
4. To execute each function, select the desired menu and press its
number on the remote commander (RM-SS200).
5. To release from test mode, press the POWER button and turn
the power off.
[OPERATING TEST MODE]
0. SYSCON DIAGNOSIS
The same contents as board detail check by serial interface can be
checked from the remote commander operation.
On the Test Mode Menu screen, press [10/0] key on the remote
commander, and the following Check Menu will be displayed.
### Syscon Diagnosis ###
Check Menu
0. Quit
1. All
2. Version
3. EEPROM
4. GPIO
5. SD Bus
6. Video
0-0. Quit
Quit the Syscon Diagnosis and return to the Test Mode Menu.
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Q
Q
TEL 13942296513 QQ 376315150 892498299
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20
HCD-EA20
0-1. All (All items continuous check)
This menu checks all diagnostic items continuously. Normally, all
items are checked successively one after another automatically
unless an error is found, but at a certain item that requires judgment
througha visualcheck tothe result,the following screen is displayed
for the key entry.
•Example display
### Syscon Diagnosis ###
Diag All Check
No.2 Version
2-3. ROM Check Sum
Check Sum = 7BC6
Press NEXT Key to Continue
Press PREV Key to Repeat
For the ROM Check, the check sum calculated by the Syscon is
output, and therefore you must compare it with the specified value
for confirmation.
Following the message, press the [NEXT ] button to go to the
next item, or press the [ PREV] button to repeat the same
operation again.
To quit the diagnosis and return to Check Menu screen, press the
[RETURN] key on the remote commander to display Check Menu.
•Error occurred
Ifan erroroccurred,the diagnosisissuspended anderror is displayed.
Press the [RETURN] key on the remote commander to quit the
diagnosis, or press the [ PREV] button to repeat the same check
where an error occurred, or press the [NEXT ] button to continue
the check from the item next to faulty item.
General Description of Checking Method
Selecting 2 and subsequent items calls the submenu screen of each
item. And selecting 2 and subsequent items executes respective
menus and outputs the results.
For the contents of each submenu, see “Check Items List” as below.
Check Items List:
0-2. Version
0-2-1. All
0-2-2. Revision
0-2-3. ROM Check Sum
0-2-4. Model Type
0-2-5. Region
0-3. EEPROM Check
0-3-1. Sampling Check
0-3-2. Detail Check
0-4. GP I/O Check
0-5. SD Bus Check
0-6. Video Check
0-2. Version
0-2-2. Revision
The revision number of ROM (IC206) that the program for
the DVD system processor (IC207) is stored.
0-2-3. ROM Check Sum
Check sum is calculated. (4 digits hexadecimal number)
>
.
>
.
0-2-4. Model Type
Model name is displayed. (DAV-EA20)
0-2-5. Region
Model destination code is displayed. (2 digits number)
0-3. EEPROM Check
0-3-1. Sampling Check
EEPROM check at every 64 words.
It compares read data with write data of each address.When
there are discrepancies between two data, it displays error.
0-3-2. Detail Check
EEPROM check at every 1 word.
It compares read data with write data of each address.When
there are discrepancies between two data, it displays error.
0-4. GP I/O Check
Pull up/down setting check of the DVD system processor (IC207)
pin 150, 151 and 154 (for clock setting port).
0-5. SD Bus Check
SD bus data check between DVD decoder (IC701) and D-RAM
(IC706).
0-6. Video Check
Output the color bars for video level adjustment.
1. DRIVE AUTO ADJUSTMENT
On the Test Mode Menu screen, press the [1] key on the remote
commander, and the Adjustment Menu will be displayed.
## Drive Auto Adjustment ##
Adjustment Menu
0. ALL
1. DVD-SL
2. CD
3. DVD-DL
Exit: RETURN
Normally, [10/0] is selected to adjust DVD (single layer), CD and
DVD (dual layer) in this order. But,individual items can be adjusted
for the case where adjustment is suspended due to an error. In this
mode, the adjustment can be made easily through the operation
following the message displayed on the screen.
The disc used for adjustment must be the one specified for
adjustment.
1-0. ALL
Press the [10/0] key on the remote commander, and the servo set
data in EEPROM will be initialized. Then, 1. DVD-SL disc, 2. CD
disc and 3. DVD-DL disc are adjusted in this order.
Each time one disc was adjusted, it is ejected. Replace it with the
specified disc following the message.You can finish the adjustment
by pressing the [RETURN] button on the remote commander.
Note: During adjustment of each disc, the measurement for disc type judg-
ment is made. As automatic adjustment does not judge the disc
type unlike conventional models, take care not to insert wrong type
discs. Also, do not give a shock during adjustment.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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