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2
XM-4S
PROTECTOR OPERATION CHECK
Thermal Protect
1. Short across TH901 with the power on.
2. Verify that the protector is operated and LED802 not illumi-
2. Verify that the protector is operated and LED802 not illumi-
nates red. When input the signal and verify that there is no out-
put on the SP-OUT even when the volume is increased.
put on the SP-OUT even when the volume is increased.
3. Verify that the protector is released and there is an output on the
SP-OUT when the short is removed.
4. Likewise, perform items 1 to 3 for TH904 and TH905.
Over Current Protect
1. Short between the positive and negative sides of the speaker
output terminals CN903 and CN904 (2/2) with the power on.
(Perform this shorting for each channel on FRONT and REAR.)
(Perform this shorting for each channel on FRONT and REAR.)
2. Verify that the protector is operated and LED802 illuminates
red. LED803 and LED804 are turned off.
3. Verify that the protector is not released and LED802 remains
red even when the short is removed.
4. Verify that the protector is released and LED802 is turned off
and LED803 and LED804 illuminates white when the power is
turned off and then on again.
turned off and then on again.
Offset Protect
1. Short between the +12V terminal of CN904 (1/2) and the (L+R)
+ or (L+R) – of the speaker output terminal CN904 (2/2).
(Short between +12V terminal and (L+R) + and between +12V
terminal and (L+R) –.)
(Short between +12V terminal and (L+R) + and between +12V
terminal and (L+R) –.)
2. Verify that the protector is operated and LED802 illuminates
red. LED803 and LED804 are turned off.
3. Verify that the protector is not released and LED802 remains
red even when the short is removed.
4. Verify that the protector is released and LED802 is turned off
and LED803 and LED804 illuminates white when the power is
turned off and then on again.
turned off and then on again.
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
the lead free mark due to their particular size.)
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 than
• 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.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
Ordinary soldering irons can be used but the iron tip has to be
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 the
heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow)
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.
Notes on Chip Component Replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
0
OR DOTTED LINE
WITH MARK
0
ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE
0
SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES
SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT.
NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES
SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL
OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT.
NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES
SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL
OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
Confirming the Operation
Please confirm the car audio unit works even if REM output is not
connected when you connect this set with the car audio unit by the
HIGH LEVEL INPUT.
connected when you connect this set with the car audio unit by the
HIGH LEVEL INPUT.
NOTE FOR REPLACEMENT OF THE
TRANSISTORS:
TRANSISTORS:
The transistors Q110, 111, 210, 211, 310, 311, 410 and 411 have
two different ranks: P rank and Y rank.
The rank of these transistors need to be selected properly according
to each channel. When replacing any one of these transistors, check
its rank and replace with the appropriate transistor of the same rank.
two different ranks: P rank and Y rank.
The rank of these transistors need to be selected properly according
to each channel. When replacing any one of these transistors, check
its rank and replace with the appropriate transistor of the same rank.
Rank
Q110, 210, 310, 410
Q111, 211, 311, 411
P
2SC5100-P
2SA1908-P
(8-729-024-79)
(8-872-024-76)
Y
2SC5100-Y
2SA1908-Y
(8-729-024-80)
(8-872-024-77)
DISCRIMINATION:
A1908: 2SA1908
C5100: 2SC5100
C5100: 2SC5100
P: RANK P
Y: RANK Y
Y: RANK Y
Ver. 1.1
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