Sony HT-DDW7500 / HT-DDW8500 / STR-KM7500 Service Manual ▷ View online
STR-KM7500
7
SECTION 3
TEST MODE
TUNER AM STEP CHANGE (9 kHz/10 kHz) MODE
The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1. Press the [
The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1. Press the [
?/1
] button to turn on the main power.
2. Press TUNER repeatedly to select AM.
3. Press
3. Press
AMP
MENU.
“1-LEVEL” appears on the display.
4. Press
V/v repeatedly to select “4-TUNER”.
5. Press
or
b to enter the menu.
6. Press
V/v repeatedly to select “AM STEP”.
7. Press
or
b to enter the parameter.
8. Press
V/v repeatedly to select the AM tuning scale you want.
FL CHECK MODE
All fl uorescent segments are tested. When this test is activated, all
segments turn on at the same time, then each segment turns on one
after another.
Procedure:
1. When pressing the [MULTI STEREO] and [A.F.D.] buttons,
All fl uorescent segments are tested. When this test is activated, all
segments turn on at the same time, then each segment turns on one
after another.
Procedure:
1. When pressing the [MULTI STEREO] and [A.F.D.] buttons,
press the [
?/1
] button to turn on the main power.
2. All segments and [MULTI STEREO] and [NIGHT MODE]
LED turn on.
3. Turn the [INPUT SELECTOR] dial.
4. Test pattern 1 turn on, [MULTI STEREO] LED turn on and
4. Test pattern 1 turn on, [MULTI STEREO] LED turn on and
[NIGHT MODE] LED turn off.
5. Turn the [INPUT SELECTOR] dial once again.
6. Test pattern 2 and [MULTI STEREO] LED turn off and
6. Test pattern 2 and [MULTI STEREO] LED turn off and
[NIGHT MODE] LED turn on .
7. Turn the [INPUT SELECTOR] dial once again. All segments
and LED turn off.
8. Every turning of the [INPUT SELECTOR] dial turns on each
segment one after another on the same order.
S.F. CLEAR MODE
The preset sound fi led is cleared when this mode is activated. Use
this mode before returning the product to clients upon completion
of repair.
Procedure:
1. While pressing the [A.F.D.] button, press the [
The preset sound fi led is cleared when this mode is activated. Use
this mode before returning the product to clients upon completion
of repair.
Procedure:
1. While pressing the [A.F.D.] button, press the [
?/1
] button to
turn on the main power.
2. The message “S.F. CLR.” appears and initialization is per-
formed.
VERSION CHECK MODE
When this mode is used the model, the destination and the software
version number are displayed.
Procedure:
1. While pressing the [NIGHT MODE] and [GAME] buttons, press
When this mode is used the model, the destination and the software
version number are displayed.
Procedure:
1. While pressing the [NIGHT MODE] and [GAME] buttons, press
the [
?/1
] button to turn on the main power.
2. The model, the distination and the software version number
appear.
KEY CHECK MODE
This mode is used to check the key.
Procedure:
1. While pressing the [MUSIC] and [MOVIE] buttons, press the
This mode is used to check the key.
Procedure:
1. While pressing the [MUSIC] and [MOVIE] buttons, press the
[
?/1
] button to turn on the main power.
2. The message “REST 06” appears.
3. Every pressing of any button other than the [
3. Every pressing of any button other than the [
?/1
] button counts
down the buttons. The buttons which are already counted once
are not counted again.
are not counted again.
4. When all buttons are pressed, the message “REST 00” ap-
pears.
SWAP ALL MODE
When this mode is used, output the audio signal of front L/R chan-
nel to all channel.
Procedure:
1. While pressing the [MULTI STEREO] and [MOVIE] buttons,
When this mode is used, output the audio signal of front L/R chan-
nel to all channel.
Procedure:
1. While pressing the [MULTI STEREO] and [MOVIE] buttons,
press the [
?/1
] button to turn on the main power.
2. The message “SWP. ALL” appears.
3. After a few seconds, “SWAP” will appear (No change while
3. After a few seconds, “SWAP” will appear (No change while
displayed).
SHIPMENT MODE
All preset contents are cleared when this mode is activated. Use
this mode before returning the product to clients upon completion
of repair.
Procedure:
1. While pressing the [NIGHT MODE] and [MULTI STEREO]
All preset contents are cleared when this mode is activated. Use
this mode before returning the product to clients upon completion
of repair.
Procedure:
1. While pressing the [NIGHT MODE] and [MULTI STEREO]
buttons, press the [
?/1
] button to turn on the main power.
2. The message “CLEARING” appears.
DCAC FACTORY TEST MODE
DCAC Factory Test mode have two stages:
1. DCAC DSP Data Line Checking
2. DCAC board Checking
DCAC Factory Test mode have two stages:
1. DCAC DSP Data Line Checking
2. DCAC board Checking
Factory Test System Setup
1. When power off :
While pressing the [GAME] and [MOVIE] buttons, press the
[
[
?/1
] button to turn on the main power .
“DCAC FTM” appears.
Afterward, press the [NIGHT MODE] to start DCAC factory
test mode.
test mode.
SPK Front Left
DCAC MIC
Receiver
DSP Data Line
Check
Start
Pass
Pass
Auto Cal Mic
Check
END
ST HDMI COAX OPT
L
C
R
SL
S
SR
SB SBR
SBL
SW
LFE SP A SP B EQ
S-AIR
MEM
RDS
D.RANGE
SLEEP
FM
AM
SAT CAT ANALOG
mft.
DEX
k Hz DTS-ES
dB 96/24NE0:6
MHz
dB 96/24NE0:6
MHz
PLIIx
ST
HDMI COAX
OPT
SR
SB SBR
SBL
SW
LFE
EQ
MEM
D.RANGE
FM
SAT CAT
ANALOG
m
ft.
DEX
k Hz
DTS
-ES
dB 96/24
NE0:6
MHz
PL
IIx
ST
HDMI COAX
OPT
L
C
R
SL
S
SP A SP B
S-AIR
RDS
SLEEP
AM
SAT CAT
ANALOG
m
ft.
DEX
k Hz
DTS
-ES
dB 96/24
NE0:6
MHz
PL
IIx
STR-KM7500
8
1. DCAC DSP Data Line Checking
After press the [TUNING MODE] button, DCAC Factory test
mode will start, below display will show:
mode will start, below display will show:
“DCAC x”
x = 1, 2, 3, 4
If there is error happen, below display will show:
“ERR SD0x” x = 1
→ D1501 or R1530 problem
x = 2
→ D1502 problem
x = 3
→ D1503 problem
x = 4
→ D1504 problem
2. DCAC board Checking
Connect front left speaker of the receiver and AUTO CAL micro-
phone. Turn [MASTER VOLUME] jog, there will be test tone
sound output from front left speaker, and the display will change
accordingly.
phone. Turn [MASTER VOLUME] jog, there will be test tone
sound output from front left speaker, and the display will change
accordingly.
“AD - xxx”
xxx = 0 to 255 (depends on loudness of test tone)
Note
When the value reaches more than 222, the test tone will muted
(for production line checking). Thus, the AD value will drop to 0.
To check the AD value again, power off the receiver and re-enter
the test mode.
When the value reaches more than 222, the test tone will muted
(for production line checking). Thus, the AD value will drop to 0.
To check the AD value again, power off the receiver and re-enter
the test mode.
VACS CONTROL TEST MODE
The VACS feature of the amplifi er is turned off purposely.
Procedure:
1. While pressing the [MUSIC] and [A.F.D] buttons, press the
The VACS feature of the amplifi er is turned off purposely.
Procedure:
1. While pressing the [MUSIC] and [A.F.D] buttons, press the
[
?/1
] button to turn on the main power.
2. The message “VACS OFF” appears.
HISTORY MODE
* The state that the set is used is memorized.
* Procedure:
1. While depressing the [GAME] and the [A.F.D.] buttons simul-
* The state that the set is used is memorized.
* Procedure:
1. While depressing the [GAME] and the [A.F.D.] buttons simul-
taneously, press the [
?/1
] button to turn on the main power.
2. “HISTORY” appears.
3. Each time the [↑] / [↓] buttons on the remote commander is
3. Each time the [↑] / [↓] buttons on the remote commander is
pressed, the item is switched in order as follows.
Items
Protector Count
Protector Count
COUNT XX
Total single power on time
SXXXHXXM
Sound Field
SND FLD
Input function
FUNCTION
Input Mode
INP MODE
Digital Select
DIGI IN
Stream information
STREAM
Signal confi guration
CO XXXXX
Headphones
HP XXX
Volume
VOL XXX
Bass Setting
BASS XXX
Treble Setting
TREB XXX
Front Level Setting
F XXX
Center Level Setting
CT XXX
Surround Left Level Setting
SL XXX
Surround Right Level Setting
SR XXX
Surround Back Left Level Setting
BL XXX
Surround Back Right Level Setting
BR XXX
Subwoofer Level Setting
SW XXX
Total power on time
TXXXHXXM
Muting Status
MUTE XXX
Power on counter (Rebox test mode)
P.W. XXX
Protector Type
PRT XXXX
Temperature when protect
TEM XXXC
PROTECTOR AUTO OFF
* Procedure:
1. While depressing the [NIGHT MODE] and the [MUSIC]
buttons simultaneously, press the power [
?/1
] button to
turn on the main power.
2. “PROTEVER” appears.
STR-KM7500
9
SECTION 4
ELECTRICAL CHECK
FM AUTO STOP CHECK
signal
generator
set
Procedure:
1. Turn on the set.
2. Input the following signal from signal generator to FM an-
1. Turn on the set.
2. Input the following signal from signal generator to FM an-
tenna input directly.
Carrier frequency: A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation : 75 kHz
Modulation : 1 kHz
ANT input : 1 kHz
Deviation : 75 kHz
Modulation : 1 kHz
ANT input : 1 kHz
Note: Use 75 ohm coaxial cable to connect signal generator and the set.
You cannot use video cable for checking.
Use signal generator whose output impedance is 75 ohm.
3. Set to FM tuner function and scan the input FM signal with
automatic scanning.
4. Confi rm that input frequency of A, B and C are detected and
automatic scanning stops.
When the station signal is received in good condition, automatic
scanning stops.
scanning stops.
STR-KM7500
10
SECTION 5
DIAGRAMS
• Circuit Boards Location
VIDEO 2 board
INSULATOR board
CONNECTION board
MAIN board
VIDEO board
DIGITAL board
TUNER (FM/AM)
HDMI board
STANDBY DCDC board
AC SELECT board (E51 only)
THERMAL SENSOR board
POWER KEY board
HP SUPPORT board
DISPLAY board
HEADPHONE board
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