Sony AIR-SA50R Service Manual ▷ View online
AIR-SA50R
3
SECTION 1
SERVICING NOTES
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong
viscosity
Unleaded solder is more viscous (sticky, less prone to fl ow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
also be added to ordinary solder.
NOTE OF REPLACING THE IC401 ON THE MAIN
BOARD
IC401 on the MAIN board cannot exchange with single. When this
part is damaged, exchange the entire mounted board.
BOARD
IC401 on the MAIN board cannot exchange with single. When this
part is damaged, exchange the entire mounted board.
NOTE OF REPLACING THE TOUCH KEY BOARD
When the TOUCH KEY board is damaged, exchange the entire
PANEL (FRONT) SUB ASSY.
When the TOUCH KEY board is damaged, exchange the entire
PANEL (FRONT) SUB ASSY.
AIR-SA50R
4
SECTION 2
DISASSEMBLY
• This set can be disassembled in the order shown below.
2-1. DISASSEMBLY FLOW
Note: Follow the disassembly procedure in the numerical order given.
2-2. MAIN BOARD BLOCK
Note: This illustration sees the set from rear side.
SET
2-2. MAIN BOARD BLOCK
(Page
(Page
4)
2-3. IF BOARD, MAIN BOARD
(Page
(Page
5)
5 screw (B2.6)
8 lead wire
(CN704)
q; flexible flat cable
(11 pin) (W3)
(CN702)
7
qs MAIN board block
6 two speaker lead wires
(CN302)
5 screw
(B2.6)
5 screw (B2.6)
9 lead wire (CN706)
qa flexible flat cable
(14 pin) (W2) (CN703)
2 screw (B3)
1 sheet (screw)
4
2 two screws
(B3)
3 three srews
(B2.6)
1 three sheets
(screw)
1 sheet
(screw)
2 screw (B3)
2 three screws
(B3)
AIR-SA50R
5
2-3. IF BOARD, MAIN BOARD
Note: This illustration sees the rear cabinet block from rear side.
2 screw (B2.6)
1 cushion (SW)
9 Remove four solders.
– MAIN board (component side) –
q; shield case
(main)
4 two screws
(B2.6)
qd MAIN board
qs power unit
cord
8 chassis (lower)
– chassis (lower) bottom view –
Arragement of power unit cord
– MAIN board (conductor side) –
qa Remove two solders.
7 four screws
(B2.6)
3 flexible flat cable
(9 pin) (W2) (CN502)
6 IF board
5 chassis (upper) block
rear cabinet block
AIR-SA50R
6
SECTION 3
TEST MODE
COLD RESET
Procedure:
1. Press the [
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. While touching the [
N
] sensor, press two buttons [SLEEP/
BRIGHT] and [
?/1
] simultaneously.
3. The message “RESET” appears on the liquid crystal display,
then turn the power off.
PANEL TEST MODE
Procedure:
1. In the standby state, while touching the [PRESET +] sensor,
Procedure:
1. In the standby state, while touching the [PRESET +] sensor,
press two buttons [SLEEP/BRIGHT] and [
?/1
] simultane-
ously.
2. When the panel test mode is activated, all segments of the liq-
uid crystal display are lighted up.
3. In the state of step 2, press the [SLEEP/BRIGHT] button, and
the version of the micro controller and destination are dis-
played on the liquid crystal display.
played on the liquid crystal display.
4. In the state of step 2, press the [S-AIR/AUDIO IN] button,
the message “Key 0” is displayed on the liquid crystal display.
When all buttons (All buttons including [
When all buttons (All buttons including [
?/1
] and [PAIRING]
(button on back panel side)) are pressed and all sensors are
touched, the message “Key 16 OK” is displayed on the liquid
crystal display.
touched, the message “Key 16 OK” is displayed on the liquid
crystal display.
5. To release from this mode, while touching the [PRESET +]
sensor, press the two buttons [SLEEP/BRIGHT] and [
?/1
] si-
multaneously.
REMOTE DISABLE MODE
Procedure:
1. In the standby state, while pressing the [S-AIR CH +] button,
Procedure:
1. In the standby state, while pressing the [S-AIR CH +] button,
press the [
?/1
] button to turn the power on.
2. The message “REMOTE ON” or “REMOTE OFF” appears
on the liquid crystal display, and on/off of the remote control
changes.
changes.
TOUCH PANEL BEEEP SOUND ON/OFF MODE
Procedure:
1. In the standby state, while pressing the [S-AIR/AUDIO IN]
Procedure:
1. In the standby state, while pressing the [S-AIR/AUDIO IN]
button, press the [
?/1
] button to turn the power on.
2. The message “BEEP ON” or “BEEP OFF” appears on the
liquid crystal display, and on/off of the beep sound when the
touch panel is operated changes.
touch panel is operated changes.
S-AIR TEST MODE
Procedure:
1. Press the [
Procedure:
1. Press the [
?/1
] button to turn the power on.
2. While touching the [
x
] sensor, press two buttons [S-AIR/
AUDIO IN] and [PAIRING] (back panel side) simultaneously.
3. The message “I2C” appears on the liquid crystal display and
enter the S-AIR test mode.
4. Touch the [PRESET +] sensor to select the “I2C”, and touch
the [ENTER] sensor.
The message “OK” or “NG” appears on the liquid crystal dis-
play and the connection of the I2C line between DARR and
micro controller can be confi rmed.
play and the connection of the I2C line between DARR and
micro controller can be confi rmed.
“OK” : Connection OK.
“NG” : Connection NG.
Touch the [ENTER] sensor, return to item selection screen.
5. Touch the [PRESET +] sensor to select the “QUALITY”, and
touch the [ENTER] sensor.
The quality of the communication is displayed on the liquid
crystal display.
crystal display.
Touch the [ENTER] sensor, return to item selection screen.
6. Touch the [PRESET +] sensor to select the “POWER”, and
touch the [ENTER] sensor.
The output power is displayed on the liquid crystal display. In
this state, whenever the [PRESET +] and [PRESET –] sensors
are touched, the output power can be changed.
this state, whenever the [PRESET +] and [PRESET –] sensors
are touched, the output power can be changed.
Touch the [ENTER] sensor, return to item selection screen.
7. Touch the [PRESET +] sensor to select the “VER.CHECK”,
and touch the [ENTER] sensor.
The microcomputer version last updated date of the S-AIR de-
vice connected with this set is displayed on the liquid crystal
display.
vice connected with this set is displayed on the liquid crystal
display.
Touch the [ENTER] sensor, return to item selection screen.
8. Touch the [PRESET +] sensor to select the “DARR”, and
touch the [ENTER] sensor.
The settings of DARR are displayed on the liquid crystal dis-
play. Whenever the [PRESET +] and [PRESET –] sensors are
touched, the displayed setting of DARR can be changed.
play. Whenever the [PRESET +] and [PRESET –] sensors are
touched, the displayed setting of DARR can be changed.
“CO XXXX” : Connect code display.
“ADR XX” : Address display.
Touch the [ENTER] sensor, return to item selection screen.
9. Touch the [PRESET +] sensor to select the “ANT SET”, and
touch the [ENTER] sensor.
The setting of antenna transceiving is displayed on the liquid
crystal display. Whenever the [PRESET +] and [PRESET –]
sensors are touched, the setting of antenna transceiving can be
changed.
crystal display. Whenever the [PRESET +] and [PRESET –]
sensors are touched, the setting of antenna transceiving can be
changed.
Touch the [ENTER] sensor, return to item selection screen.
10. Touch the [PRESET +] sensor to select the “ANT MON”, and
touch the [ENTER] sensor.
The antenna under use is displayed on the liquid crystal dis-
play.
play.
Touch the [ENTER] sensor, return to item selection screen.
11. Touch the [PRESET +] sensor to select the “REC”, and touch
the [ENTER] sensor.
Whether the audio source that has been reproduced can be re-
corded is displayed on the liquid crystal display.
corded is displayed on the liquid crystal display.
Touch the [ENTER] sensor, return to item selection screen.
12. Touch the [PRESET +] sensor to select the “DEMO”, and
touch the [ENTER] sensor.
The message “ON” or “OFF” appears on the liquid crystal dis-
play. Whenever the [PRESET +] and [PRESET –] sensors are
touched, the on/off can be changed.
play. Whenever the [PRESET +] and [PRESET –] sensors are
touched, the on/off can be changed.
“ON” : Demo mode (Mode for demonstration at shops).
“OFF” : Normal mode.
Touch the [ENTER] sensor, return to item selection screen.
13. Touch the [PRESET +] sensor to select the “RF CHG”, and
touch the [ENTER] sensor.
The message “ON” or “OFF” appears on the liquid crystal dis-
play. Whenever the [PRESET +] and [PRESET –] sensors are
touched, the on/off can be changed.
play. Whenever the [PRESET +] and [PRESET –] sensors are
touched, the on/off can be changed.
“ON” : The RF CHG function of DARR is on.
“OFF” : The RF CHG function of DARR is off.
Touch the [ENTER] sensor, return to item selection screen.
14. Touch the [PRESET +] sensor to select the “NA SEND”, and
touch the [ENTER] sensor.
The message “ON” or “OFF” appears on the liquid crystal dis-
play. Whenever the [PRESET +] and [PRESET –] sensors are
touched, the on/off can be changed.
play. Whenever the [PRESET +] and [PRESET –] sensors are
touched, the on/off can be changed.
“ON” : NACK is transmitted at the Bad_Sync.
“OFF” : NACK is not transmitted at the Bad_Sync.
Touch the [ENTER] sensor, return to item selection screen.
15. To release from this mode, press the [
?/1
] button. The setting
is maintained until turning off power.