DOWNLOAD Sony STR-DN1050 Service Manual ↓ Size: 9.16 MB | Pages: 124 in PDF or view online for FREE

NOTE  OF  REPLACING  THE  Q550,  Q551,  Q600,   
Q601,  Q650,  Q651,  Q700,  Q701,  Q750,  Q751,  Q800,  
Q801,  Q850  AND  Q851  ON  THE  MAIN  BOARD
Replacement of Q550, Q551, Q600, Q601, Q650, Q651, Q700, 
Q701, Q750, Q751, Q800, Q801, Q850 and Q851 on the MAIN 
board used in this unit requires L type screw driver.

NOTE  OF  REPLACING  THE  IC1905,  IC1906,  IC1907,  
IC1908,   IC1909  OR  IC1910  ON  THE  DCDC  BOARD
Replacement of IC1905, IC1906, IC1907, IC1908, IC1909 or 
IC1910 on the DCDC Board used in this unit required to unsolder 
the grounding wire on the DCDC Board.

After replaced the IC1905, IC1906, IC1907, IC1908, IC1909 or 
IC1910, have to solder back the grounding wire on the DCDC 
Board properly before turn on the set (refer image provided 
below). 
(Caution:  If insuffi cient solder occured for the grounding wire in 
DCDC Board, it may caused the set intermittent turn on/off and 
will spoil the Digital Board)

Grounding wire area (Conductor View)

CAPACITOR  ELECTRICAL  DISCHARGE  PROCESSING
When checking the board, for the electric shock prevention, 
connect the resistors to both ends of respective capacitors (C936 
and C937 on the MAIN board) to discharge the capacitors.

If there is a malfunction, a message appears on 
the display panel. You can check the condition 
of the system by the message. If any problem 
persists, consult your nearest Sony dealer. 

The receiver will automatically turn off 
after a few seconds. Check the followings:

s

There may be an electrical surge or 

  power failure. Unplug the AC power cord
  (mains lead) and then plug in the cord
  again after 30 minutes.

s

The receiver is covered and the ventila-

  tion holes are blocked. Remove the object
  covering the ventilation holes of the
 receiver.

s

The impedance of the connected speakers

  is below the rated impedance range 
  indicated on the back panel of the
  receiver. Reduce the volume level.

s

Unplug the AC power cord (mains lead)

  and let the receiver cool down for 30
  minutes while performing the following
 troubleshooting:

  – Disconnect all of the speakers and 
 subwoofer.
  – Check that the speaker wires are tightly
 

twisted on both ends.

  – Connect the front speaker first, increase
 

the volume level and operate the 

 

receiver for at least 30 minutes until

 

it completely warms up. Then, connect

 

each additional speaker one by one and

 

test each additional speaker until you

 

detect which speaker is causing the 

 protection 

error.

 After checking the above items and fixing 
 any problems, plug in the AC power cord
 (mains lead) and turn on the receiver. If 
 the problem persists, consult your nearest 
 Sony dealer.

An over-current from the    (USB) port was 
detected. The receiver will automatically 
turn off after a few seconds. Check the 
iPhone/iPod or USB device, then unplug it 
and turn on the power again.

For other messages, see "List of messages 
after Auto Calibration measurements", 
"iPhone/iPod message list”, “USB message 
list” and “Network features message list”.

You can clear all memorized settings and 
restore the receiver to the factory default 
settings by the following procedure. This 
procedure can also be used to initialize 
the receiver before you use it for the first 
time.
Be sure to use the buttons on the receiver 
to perform this operation.
1. Turn off the receiver.
2. Hold down 

"/1

 (on/standby) on the 

  receiver for 5 seconds.
  [CLEARING] appears on the display 
  panel for a while, then changes to 
 [CLEARED!] 

.

s

It takes a few minutes for the memory 

  to be cleared completely. Do not turn 
  the receiver off until [CLEARED!] 
  appears on the display panel.

Be sure to use the buttons on the receiver 
to perform this operation.
  1. Turn off the receiver.
  2. Hold down MUSIC and press 

&/1

 

    (on/standby) on the receiver.
    [S.F. CLEAR] appears on the display 
    panel and all sound fields are reset to 
    their default setting.

NOTE  OF  REPLACING  MB  BOARD  OR  BLUETOOTH 
MODULE  OR  RC-S801/A5 (WW)  BOARD
When the MB board or BLUETOOTH module or RC-S801/A5 
(WW) board are replaced, please execute the below service mode.

1.  Press the [

\

/1

] button to turn the power on.

2. Place the Bluetooth device within 1 meter (3 feet) from the 

system.

3.  Press BLUETOOTH on the unit to select Bluetooth function. 

“BLUETOOTH” appears in the display panel.

4.  Hold down BLUETOOTH on the unit for 2 seconds or more.
 

“PAIRING” and “BT” fl ashes in the display panel.

5.  Perform the pairing procedure on the Bluetooth device.
6.  Select the model number of the unit on the display of the 

Bluetooth device.

 

For example, select “STR-DN1050”. If passkey is required on 
the Bluetooth device, enter “0000”.

7. Perform 

the 

Bluetooth connection on the Bluetooth device.

8.  When pairing is completed and the Bluetooth connection is 

established, “BT” lights up in the display panel.

 

 Depending on the Bluetooth device, connection may start 
automatically after pairing is completed.

 

 You can check the Bluetooth device address by pressing 
DISPLAY repeatedly.

9.  To cancel pairing operation, hold down BLUETOOTH on the 

unit for 2 seconds or more until “CANCEL” appears in the 
display panel.

Note: The operation in this mode must use a NFC-compatible smartphone 

(Smartphones with a built-in NFC function [OS: Android 2.3.3 or 
later, excluding Android 3.x])

1.  Press the [

\

/1

] button to turn the power on.

2.  Download and install the app “NFC Easy Connect”.
 

Download the free Android app from Google Play by searching 
for “NFC Easy Connect”.

 

You do not need to install the NFC Easy Connect application if 
you are using an NFC compatible mobile device with Android 
OS 4.1 or later installed.

3.  Start the app “NFC Easy Connect” on the smartphone.
 

Make sure that the application screen is displayed.

4.  Touch the smartphone to the N-Mark on the system until the 

smartphone vibrates.

  Complete the connection by following the instructions 

displayed on the smartphone.

5.  When pairing is completed and the Bluetooth connection is 

established, the Bluetooth device name and “BT” appears in 
the display panel.

For a Bluetooth device
1.  Press the [

\

/1

] button to turn the power on.

2.  Press BLUETOOTH on the unit to select Bluetooth function.
 

“BLUETOOTH” appears in the display panel.

3.  Establish connection with the Bluetooth device.
 

Press BLUETOOTH on the unit to connect to the last 
connected Bluetooth device.

 Perform 

the 

Bluetooth connection from the Bluetooth device if 

the device is not connected.

 

Once the connection is established, the Bluetooth device name 
and “BT” appears in the display panel.

4. Press 

N

.

 

Depending on the Bluetooth device,

 

– you may have to press N twice.

 

– you may need to start playback of an audio source on the
  Bluetooth device.

For an NFC-compatible smartphone
1.  Press the [

\

/1

] button to turn the power on.

 

Touch the smartphone to the N-Mark on the system to establish 
the Bluetooth connection.

  Start playback of an audio source on the smartphone. For 

details on playback, refer to the operating instructions of your 
smartphone.

To disconnect the Bluetooth device
For a Bluetooth device
Press BLUETOOTH on the unit.
“BLUETOOTH” appears in the display panel.

For an NFC-compatible smartphone
Touch the smartphone to the N-Mark on the system again.

• 

This set can be disassembled in the order shown below.

Note: Follow the disassembly procedure in the numerical order given.

3

u 8)

4

2

u 8)

5

1

u 8)

4