HCD-GZX33D, HCD-GZX55D, HCD-GZX88D - Sony Audio Service Manual (repair manual). Page 7

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HCD-GZX33D/GZX55D/GZX88D
7

NOTE  OF  REPLACING  MB  BOARD  OR  BLUETOOTH 
MODULE  OR  RC-S801/A (WW)  BOARD
When the MB board or BLUETOOTH module or RC-S801/A 
(WW) board are replaced, please execute the below service mode.
Pairing this system with a 
Bluetooth device
1.  Press the [
\
/1
] button to turn the power on.
2. Place 
the 

Bluetooth device within 1 meter 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” 
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 “SONY MHC-GZX88D” (or MHC-
GZX55D/GZX33D). 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, the Bluetooth device name appears in the display 
panel.
9.  To cancel pairing operation, hold down BLUETOOTH on the 
unit for 2 seconds or more until “BLUETOOTH” appears in 
the display panel.
Connecting with a smartphone by one touch (NFC)

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”.
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 appears in the display 
panel.
Playing music from a 
Bluetooth device

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.
 
The last connected Bluetooth device will be connected 
automatically.
 Perform 
the 

Bluetooth connection from the Bluetooth device if 
the device is not connected.
 
Once the connection is established, the Bluetooth device name 
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.
To erase all the pairing registration information perform 
COLD RESET test mode (Refer page 13).
Display
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