Read Sony STR-DH740 Service Manual online
STR-DH740
10
SECTION 3
TEST MODE
TUNER AM STEP CHANGE MODE
(US and Canadian models only)
Either the 9 kHz step or 10 kHz step can be selected for the AM
channel step.
Procedure:
1. Press the [
(US and Canadian models only)
Either the 9 kHz step or 10 kHz step can be selected for the AM
channel step.
Procedure:
1. Press the [
?/1
] button to turn on the main power.
2. Turn the [INPUT SELECTOR] knob to select the “AM TUNER”.
3. Press the [?/1] button to turn off the main power.
4. While pressing the [TUNING MODE] button, press the [?/1]
3. Press the [?/1] button to turn off the main power.
4. While pressing the [TUNING MODE] button, press the [?/1]
button to turn on the main power.
5. Either the message “10K Step” or “9K Step” appears.
6. Repeat step (4) to select desired step.
6. Repeat step (4) to select desired step.
VACUUM FLOURESCENT DISPLAY TEST MODE
All fl ourescent segments are tested.
When this test is activated, all segments light on at the same time,
then each segment lights on one after another.
Procedure:
While pressing [SPEAKERS] and [DIMMER] buttons simultane-
ously, press the [
All fl ourescent segments are tested.
When this test is activated, all segments light on at the same time,
then each segment lights on one after another.
Procedure:
While pressing [SPEAKERS] and [DIMMER] buttons simultane-
ously, press the [
?
/
1
] button to turn on the main power.
1. ALL segments light on.
HDMI ARC PARTY S.OPTIMIZER
D.C.A.C.
PLII x z NEO:6 X D.R.C. D.L.L.
EQ MEM RPT
True HD DTS-HD SPA+B
ST
USB BT UPDATE A.P.M.ZONE 2 3
COAX OPT
COAX OPT
SLEEP
MHz
k Hz
dB
HDMI OUT
A + B
2. Press the [DISPLAY] button to confi rm display as below.
HDMI
PARTY
D.C.A.C.
II z
6 D.R.C.
MEM
True HD
-HD
A B ST
USB
UPDATE
ZONE 3
OPT
SLEEP
MHz
Hz
A B
3. Press the [DISPLAY] button to confi rm display as below.
ARC
S.OPTIMIZER
PL x NEO: X
D.L.L.
RPT
DTS
SP +
BT
A.P.M.
2
COAX
k
dB
EQ
HDMI OUT
A
+
B
4. Press the [DISPLAY] button, all segments light off.
SOUND FIELD CLEAR MODE
The preset sound fi eld is cleared when this mode is activated.
Use this mode before returning the product to clients upon comple-
tion of repair.
Procedure:
1. While pressing [MUSIC] button, press the [
The preset sound fi eld is cleared when this mode is activated.
Use this mode before returning the product to clients upon comple-
tion of repair.
Procedure:
1. While pressing [MUSIC] button, press the [
?/1
] button to turn
on the main power.
2. The message “S.F CLEAR” appears for a moment and initial-
ization is performed.
SOFTWARE VERSION DISPLAY MODE
The software version is displayed.
Procedure:
1. While pressing [A.F.D.] and [PURE DIRECT] buttons simul-
The software version is displayed.
Procedure:
1. While pressing [A.F.D.] and [PURE DIRECT] buttons simul-
taneously, press the [
?
/
1
] button to turn on the main power.
2. The message “H74 XXX” appears.
XXX:
XXX:
Area
display
Each time the [DISPLAY] button is pressed, “SYS vX.XXX”,
“MAIN vX.XX”, “VIDEO vX.XX”, “OSD vX.XX” and
“SFLASHvX.XX” appear in this order, and returns to the
“H74 XXX” display.
“H74 XXX” display.
X.XX: Software version
KEY CHECK MODE
Each button can be checked.
Procedure:
1. While pressing [SPEAKERS] and [PURE DIRECT] buttons
Each button can be checked.
Procedure:
1. While pressing [SPEAKERS] and [PURE DIRECT] buttons
simultaneously, press the [
?/1
] button to turn on the main
power.
2. The message “REST 12” appears.
Every pressing of any button other than the [
?/1
] counts down
the buttons.
3. The buttons which are already counted once are not counted
again.
4. When all buttons are pressed, “REST 00” appears.
SWAP ALL MODE
The signal will be swap to all channels so that all speakers will
have sound output.
Procedure:
1. While pressing [PURE DIRECT] and [MOVIE] buttons si-
The signal will be swap to all channels so that all speakers will
have sound output.
Procedure:
1. While pressing [PURE DIRECT] and [MOVIE] buttons si-
multaneously, press the [
?
/
1
] button to turn on the main power.
2. “SWAP MODE” appears.
INITIALIZE MODE
All preset contents are cleared when this mode is activated. Use
this mode before returning the product to clients upon completion
of repair.
(a) SHIPMENT MODE
Procedure:
1. While pressing [A.F.D.] and [DIMMER] buttons simultane-
All preset contents are cleared when this mode is activated. Use
this mode before returning the product to clients upon completion
of repair.
(a) SHIPMENT MODE
Procedure:
1. While pressing [A.F.D.] and [DIMMER] buttons simultane-
ously, press the [
?
/
1
] button to turn on the main power.
2. The message “CLEARING” appears and the memories are re-
set to the default values.
3. When done, the message “CLEARED !” appears, the set will
power off.
(b) ALL CLEAR INITIALIZE
Procedure:
1. While pressing [A.F.D.] and [DISPLAY] buttons, press the
Procedure:
1. While pressing [A.F.D.] and [DISPLAY] buttons, press the
[
?
/
1
] button to turn on the main power.
2. The message “CLEARING” appears and the memories are re-
set to the default values.
3. When done, the message “CLEARED !” appears, the set will
power on.
(c) USER INITIALIZE
Procedure:
1. Hold the [
Procedure:
1. Hold the [
?
/
1
] button for 5 seconds.
2. The message “CLEARING” appears on the display.
3. After few seconds, “CLEARED !” appears.
3. After few seconds, “CLEARED !” appears.
PROTECTOR AUTO OFF
To disable auto off after protector occur.
Procedure:
1. While pressing [DISPLAY] and [MOVIE] buttons simultane-
To disable auto off after protector occur.
Procedure:
1. While pressing [DISPLAY] and [MOVIE] buttons simultane-
ously, press the [
?
/
1
] button to turn on the main power.
2. “PROTEVER” appears and switch on the set.
DCAC TEST MODE
To test audio output from mic input and speakers.
Procedure:
1. While pressing [MUSIC] and [DIMMER] buttons simultane-
To test audio output from mic input and speakers.
Procedure:
1. While pressing [MUSIC] and [DIMMER] buttons simultane-
ously, press the [
?
/
1
] button to turn on the main power.
2. The message “MIC” appears.
MIC: mode that output audio from mic input
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