DAV-HDX275, DAV-HDX277WC, DAV-HDX279W, DAV-HDX475, DAVHDX576WF, DAV-HDX675, HCD-HDX275, HCD-HDX277WC, HCD-HDX279W, HCD-HDX475, HCD-HDX576WF, HCD-HDX675 - Sony Audio Service Manual (repair manual). Page 25

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HCD-HDX275/HDX277WC/HDX279W/HDX475/HDX576WF/HDX675
25
DIGITAL  MEDIA  PORT  TEST
Procedure:
1.  Connect the DMPORT CHECK JIG (Part No.: J-2501-309-A) 
with the terminal DMPORT.
2.  Press the [
?
/
1
] button to turn the power on.
3. Confi rm that both LEDs of the DMPORT confi rmation  JIG 
lights. (Confi rmation the power supply line.)
4.  Set the [FUNCTION] button with “DMPORT” on this model.
5. Press 
the 
[
S
], [
l
] buttons and turn the [VOLUME] control 
in the direction of (+) simultaneously, the DMPORT test mode 
is activated.
6.  It is confi rmed that “DMPORT OK” is displayed on this set 
display. (Confi rmation of communication line)
7.  To a pinjack of the DMPORT confi rmation JIG input informa-
tion relevant to audio signal (sine-wave 1.0Vrms) and compos-
ite video signal (white 100% 1.0 Vp-p, color bar, etc.)
8. Confi rm the output of speakers and monitor TV. (Confi rmation 
of analog signal)
9.  To exit from this mode, press the [
S
], [
l
] buttons and turn 
the [VOLUME] control in the direction of (+).
color pattern
generator
DMPORT
check jig
(Part No.:
J-2501-309-A)
J001
AF oscillator
set
TV
monitor
FL/FR
speaker
MAIN board
CN204
SPEAKER board
TB100 (HDX275/HDX277WC/
      HDX475/HDX675)
TB101 (HDX279W/HDX576WF)
IO board
J402
1.  DVD  SERVICE  MODE  GENERAL  DESCRIPTION
This mode let you make diagnosis and adjustment easily by using 
the remote commander and the TV screen. The instructions, diag-
nostic results, etc. are given on the on-screen display.
Be sure to execute the IOP measurement when a base unit is re-
placed.
2.  ENTERING  DVD  SERVICE  MODE
Procedure:
1.  Press the [
?
/
1
] button to turn on the system.
2.  Press the [FUNCTION] button repeatedly to select the 
“DVD”.
3.  While pressing the [
s
] and [
A
] buttons simultaneously, turn 
[VOLUME] dial in the direction of (+) with the DVD player in 
power on.
4.  The message “SERVICE IN” appears on the fl uorescent  in-
dicator tube and top menu of the Remocon Diagnosis Menu 
appears on the on-screen display on the TV screen as follows. 
The model name, IF-con version and Syscon version are dis-
played at the bottom of the on-screen display.
 
Remocon Diagnosis Menu
0. External Chip Check
1. Servo Parameter Check
2. Drive Manual Operation
3. Emergency History
4. Version Information
Model Name 
:xxxx_xx
IF-con:Ver.xx.xx(xxxx)
Syscon:Ver.x.xxx
5.  To execute each function, press its number by using numeric 
button on the remote commander.
6.  To release from this mode, press the [
?
/
1
] button to turn off the 
system.
3.  EXECUTING  IOP  MEASUREMENT
In order to execute IOP measurement, the following standard pro-
cedures must be followed.
Procedure:
1.  From the top menu of Remocon Diagnosis Menu, select “2 
Drive Manual Operation” by pressing the [2] button on the 
remote commander. The following screen appears on the on-
screen display
 
Drive Manual Operation
1. Servo Control
2. Track/Layer Jump
3. Manual Adjustment
4. Mecha test mode
5. MIRR time Adjust
0. Return to Top Menu
2.  Select “3. Manual Adjustment” by pressing the [3] button on 
the remote commander. The following screen appears on the 
on-screen display.
 
Manual Adjust
1. Track Balance Adjust:
2. Track Gain Adjust:
3. Focus Balance Adjust:
4. Focus Gain Adjust:
5. Eq boost Adjust:
6. Iop:
7. TRV. Level:
8. S curve(FE) Level:
9. RFL(PI) Level:
0. MIRR Time:
[
V][v]  Change Value
[RETURN]Return to previous menu
3.  Select “6. Iop:” by pressing [6] button on the remote com-
mander.
4.  Wait until a hexadecimal number appear in the on-screen dis-
play as below.
 
Manual Adjust
1. Track Balance Adjust:
2. Track Gain Adjust:
3. Focus Balance Adjust:
4. Focus Gain Adjust:
5. Eq boost Adjust:
6. Iop: ED:
7. TRV. Level:
8. S curve(FE) Level:
9. RFL(PI) Level:
0. MIRR Time:
[
V][v]  Change Value
[RETURN]Return to previous menu
5.  Convert data from hexadecimal to decimal by using conver-
sion table.
DVD SECTION
Ver. 1.1
Page of 110
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