Sony XM-ZR6022 Service Manual ▷ View online
XM-ZR6022
7
SECTION 2
DISASSEMBLY
2-1. BOTTOM
PLATE
(Page
7)
2-2. MAIN BOARD SECTION
(Page
(Page
8)
SET
2-3. MAIN
BOARD
(Page
8)
Note: This set can be disassemble according to the following sequence.
three screws
(+BTP 3
(+BTP 3
× 6)
three screws
(+BTP 3
(+BTP 3
× 6)
bottom plate
Note: Follow the disassembly procedure in the numerical order given.
2-1. BOTTOM PLATE
XM-ZR6022
8
2-2. MAIN BOARD SECTION
three screws
(+P 3
(+P 3
× 8)
three screws
(+P 3
(+P 3
× 8)
three screws
(+P 3
(+P 3
× 8)
MAIN board section
main heat sink
2-3. MAIN BOARD
screw
(+P 3
(+P 3
× 8)
two screws
(+P 3
(+P 3
× 8)
front panel
MAIN board
screw
(+P 3
(+P 3
× 8)
XM-ZR6022
XM-ZR6022
9
9
3-1. BLOCK DIAGRAM
SECTION 3
DIAGRAMS
2
3
3
PRE AMP
IC301 (1/2)
2
3
3
L.P.F
IC302 (1/2)
DIFFERENTIAL
AMP
Q103
POWER
AMP
Q110
OVERLOAD
DET
Q112
DRIVE
AMP
Q104
DRIVE
AMP
Q108
DIFFERENTIAL
AMP
Q102
POWER
AMP
Q111
DRIVE
AMP
Q105
DRIVE
AMP
Q109
BIAS
Q206,
207
CNJ901
D906
INPUT
L
(BTL)
SPEAKER OUT
L
R
SWITCH
Q101
REM
+12V
GND
9
DIFFERENTIAL
AMP
Q203
POWER
AMP
Q210
OVERLOAD
DET
Q212
DRIVE
AMP
Q204
DRIVE
AMP
Q208
DIFFERENTIAL
AMP
Q202
POWER
ON/OFF
ON/OFF
Q903
MUTE
CONTROL
Q301,302,311
POWER
AMP
Q211
DRIVE
AMP
Q205
DRIVE
AMP
Q209
CN901
L
HIGH LEVEL
INPUT
R
SWITCH
Q201
OVERLOAD
PROTECT
Q307,308
15
16
16
1
2
2
14
12
B+
SWITCH
Q902
OVER VOLTAGE
DETECT
Q901
DC DET
IC902
REF.
REG
REG
TEMP. DET
TH901-903
THERMAL DET
Q912,913
CN903 (2/2)
F901
RECT
D303
RECT
D304
+15V
+30V
SWITCHING
DRIVER
Q910
SWITCHING
DRIVER
Q911
DRIVER
Q909
PROTECTOR
DETECT
Q905,906
DRIVER
Q908
8
10
3
11
D918
POWER/
PROTECTOR
DC-DC
CONVERTER
TRANSFORMER
T901
DC-DC CONVERTER
IC901
D902
D903
• Signal path
: AUDIO
: AUDIO
CN903 (1/2)
(BTL)
-1
-2
LED DRIVER
Q904
R
(PROTECTOR)
G
(POWER)
R
1
1
CR
FILTER
OFF
ON
SW301-1
VR301-1
SW301
LPF(80Hz)
30A
VR301
LEVEL
LEVEL
2
1
GAIN CONTROL AMP
IC303 (1/2)
GAIN CONTROL AMP
IC303 (2/2)
5
PRE AMP
IC301 (2/2)
6
5
5
L.P.F
IC302 (2/2)
7
7
CR
FILTER
SW301-2
VR301-2
6
7
6
+15V REG
Q303,304,309
–15V
–30V
–15V REG
Q305,306,310
BIAS
Q106,
107
SENSING POWER ON
XM-ZR6022
XM-ZR6022
10
10
•
A : B+ Line.
•
B : B– Line.
•
H : adjustment for repair.
• Power voltage is dc 14.4V fed with regulated dc
power supply from +12V and REM terminals
• Voltages is dc respect to ground under no-signal
conditions.
• Voltages are taken dc with a VOM (Input impedance
power supply from +12V and REM terminals
• Voltages is dc respect to ground under no-signal
conditions.
• Voltages are taken dc with a VOM (Input impedance
10M
Ω) .
Voltage variations may be noted due to normal production
tolerances
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
• Circled number refer to waveforms.
• Signal path.
F :
AUDIO
for printed wiring boards:
•
X : Parts extracted from the component side.
•
: Pattern from the side which enables seeing.
Note: The components identifi ed by mark
0 or dotted
line with mark
0 are critical for safety.
Replace only with part number specifi ed.
THIS NOTE IS COMMON FOR PRINTED WIR-
ING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
ING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
for schematic diagrams:
• All capacitors are in
μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω and
1
/
4
W or less unless otherwise
specifi ed.
•
Note for Replacement of the Transistors
The transistors Q110, 111, 210 and 211 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.
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
Q111,211
P
2SC5100-P
(8-729-024-79)
2SA1908-P
(8-872-024-76)
Y
2SC5100-Y
(8-729-024-80)
2SA1908-Y
(8-872-024-77)
A1908: 2SA1908
C5100: 2SC5100
C5100: 2SC5100
P: RANK P
Y: RANK Y
Y: RANK Y
IC901
(CT)
1 V/DIV, 10 μsec/DIV
3 Vp-p
20
μsec
• Waveform
OSC
REF 5V
ERROR
ERROR
0.1V
Q1
Q2
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7 8
NON
INV
VREF
VCC
C2
E1
E2
OUT
+IN
-IN
COMPEN
CT
RT
C1
GND
TIME
• IC Block Diagram
DISCRIMINATION:
IC901 TL594INSR
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