Read Sony XM-ZR704 Service Manual online
XM-ZR704
2
1. GENERAL
Location and Function of Controls ................................. 3
Connections
....................................................................
4
2. DISASSEMBLY
2-1. Bottom
Plate
................................................................... 7
2-2. MAIN Board Section ...................................................... 8
2-3. LED ILLUMI (R) Board, LED ILLUMI (L) Board ....... 8
2-4. MAIN
2-3. LED ILLUMI (R) Board, LED ILLUMI (L) Board ....... 8
2-4. MAIN
Board
................................................................... 9
3. DIAGRAMS
3-1. Block
Diagram
................................................................ 11
3-2. Printed Wiring Board –Main Section– ............................ 12
3-3. Printed Wiring Boards –LED Section– ........................... 13
3-4. Schematic Diagram –Main Section (1/3)– ...................... 14
3-5. Schematic Diagram –Main Section (2/3)– ...................... 15
3-6. Schematic Diagram –Main Section (3/3)– ...................... 16
3-3. Printed Wiring Boards –LED Section– ........................... 13
3-4. Schematic Diagram –Main Section (1/3)– ...................... 14
3-5. Schematic Diagram –Main Section (2/3)– ...................... 15
3-6. Schematic Diagram –Main Section (3/3)– ...................... 16
4.
EXPLODED VIEWS
4-1. Heat Sink (Main) Section ............................................... 17
4-2. MAIN Board Section ...................................................... 18
4-2. MAIN Board Section ...................................................... 18
5.
ELECTRICAL PARTS LIST
.............................. 19
TABLE OF CONTENTS
SAFETY-RELATED COMPONET 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
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
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 FONC-
TIONNEMENT. NE REMPLACER CES COMPOSANTS QUE
PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DON-
NÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONC-
TIONNEMENT. NE REMPLACER CES COMPOSANTS QUE
PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DON-
NÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
PROTECTOR OPERATION CHECK
Thermal Protect
1. Short across TH901 with the power on.
2. Verify that the protector is operated and D943 illuminates
1. Short across TH901 with the power on.
2. Verify that the protector is operated and D943 illuminates
green. When input the signal and verify that there is no output
on the SP-OUT even when the volume is increased.
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 TH902 and TH903.
Over Current Protect
1. Short between the positive and negative sides of the speaker
1. Short between the positive and negative sides of the speaker
output terminal CN904 (1/2) with the power on.
2. Verify that the protector is operated and D943 illuminates red.
3. Verify that the protector is not released and D943 remains red
3. Verify that the protector is not released and D943 remains red
even when the short is removed.
4. Verify that the protector is released and D943 illuminates green
when the power is turned off and then on again.
Offset Protect
1. Short between the +12V terminal of CN904 (2/2) and the
1. Short between the +12V terminal of CN904 (2/2) and the
(L+R) + or (L+R) – of the speaker output terminal CN904
(1/2).
(1/2).
(Short between +12V terminal and (L+R) + and between +12V
terminal and (L+R) –.)
terminal and (L+R) –.)
2. Verify that the protector is operated and D943 illuminates red.
3. Verify that the protector is not released and D943 remains red
3. Verify that the protector is not released and D943 remains red
even when the short is removed.
4. Verify that the protector is released and D943 illuminates green
when the power is 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
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.
NOTES ON CHIP COMPONENT REPLACEMENT
•
•
Never reuse a disconnected chip component.
•
Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
aged by heat.
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