Sony KDL-32CX527 / KDL-40CX527 (serv.man2) Service Manual ▷ View online
5
KDL-32CX527/40CX527
KDL-32CX527/40CX527
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly soldered
connections. Check the entire board surface for solder splashes and
bridges.
bridges.
2. Check the interboard wiring to ensure that no wires are “pinched” or
touching high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps, and
mounting hardware have been replaced. Be absolutely certain that
you have replaced all the insulators.
you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly transistors,
that were installed during a previous repair. Point them out to the
customer and recommend their replacement.
customer and recommend their replacement.
5. Look for parts which, though functioning, show obvious signs of
deterioration. Point them out to the customer and recommend their
replacement.
replacement.
6. Check the line cords for cracks and abrasion. Recommend the
replacement of any such line cord to the customer.
7. Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.
described below.
Leakage Test
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instructions.
instructions.
2. A battery-operated AC milliampmeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a VOM
or battery-operated AC voltmeter. The “limit” indication is 0.75
V, so analog meters must have an accurate low voltage scale.
The Simpson’s 250 and Sanwa SH-63TRD are examples of
passive VOMs that are suitable. Nearly all battery-operated digital
multimeters that have a 2 VAC range are suitable (see Figure A).
V, so analog meters must have an accurate low voltage scale.
The Simpson’s 250 and Sanwa SH-63TRD are examples of
passive VOMs that are suitable. Nearly all battery-operated digital
multimeters that have a 2 VAC range are suitable (see Figure A).
How to Find a Good Earth Ground
A cold-water pipe is a guaranteed earth ground; the cover-plate
retaining screw on most AC outlet boxes is also at earth ground. If the
retaining screw is to be used as your earth ground, verify that it is at
ground by measuring the resistance between it and a cold-water pipe
with an ohmmeter. The reading should be zero ohms.
A cold-water pipe is a guaranteed earth ground; the cover-plate
retaining screw on most AC outlet boxes is also at earth ground. If the
retaining screw is to be used as your earth ground, verify that it is at
ground by measuring the resistance between it and a cold-water pipe
with an ohmmeter. The reading should be zero ohms.
If a cold-water pipe is not accessible, connect a 60- to 100-watt
trouble- light (not a neon lamp) between the hot side of the receptacle
and the retaining screw. Try both slots, if necessary, to locate the hot
side on the line; the lamp should light at normal brilliance if the screw
is at ground potential (see Figure B).
trouble- light (not a neon lamp) between the hot side of the receptacle
and the retaining screw. Try both slots, if necessary, to locate the hot
side on the line; the lamp should light at normal brilliance if the screw
is at ground potential (see Figure B).
To Exposed Metal
Parts on Set
0.15 µF
Earth Ground
AC
Voltmeter
(0.75V)
Trouble Light
AC Outlet Box
Ohmmeter
Cold-water Pipe
Figure A. Using an AC voltmeter to check AC leakage.
Figure B. Checking for earth ground.
6
KDL-32CX527/40CX527
KDL-32CX527/40CX527
SECTION 1: DIAGRAMS
1-1. CIRCUIT BOARDS LOCATION
1-2. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS INFORMATION
All voltages are in V.
S : Measurement impossibility.
: B+line.
: B-line. (Actual measured value may be different).
: signal path. (RF)
Circled numbers are waveform references.
The components identifi ed by shading and
!
symbol are critical for safety. Replace
only with part number specifi ed.
The symbol
indicates a fast operating fuse and is displayed on the component
side of the board. Replace only with fuse of the same rating as marked.
NOTE: The components identifi ed by a red outline and a mark contain confi dential
information. Specifi c instructions must be adhered to whenever these components
are repaired and/or replaced.
See Appendix A: Encryption Key Components in the back of this manual.
information. Specifi c instructions must be adhered to whenever these components
are repaired and/or replaced.
See Appendix A: Encryption Key Components in the back of this manual.
All capacitors are in
μF unless otherwise noted. pF : μμF 50WV or
less are not indicated except for electrolytics and tantalums.
All electrolytics are in 50V unless otherwise specifi ed.
All resistors are in ohms. k
=1000, M=1000k
Indication of resistance, which does not have one for rating
electrical power, is as follows:
electrical power, is as follows:
Pitch : 5mm
Rating
electrical
power
:
1
/
4
W
1
/
4
W in resistance,
1
/
10
W and
1
/
16
W in chip resistance.
: nonfl ammable resistor
: fusible resistor
: internal component
: panel designation and adjustment for repair
: earth ground
: earth-chassis
All variable and adjustable resistors have characteristic curve B,
unless otherwise noted.
unless otherwise noted.
Readings are taken with a color-bar signal input.
Readings are taken with a 10M
digital multimeter.
Voltages are DC with respect to ground unless otherwise noted.
Voltage variations may be noted due to normal production
tolerances.
tolerances.
SWITCH
UNIT
HLR2
HMS3
G2AS
TCON
BATV
SWITCH
UNIT
HLR2
HMS3
G2BS
BATV
Figure 1-1. KDL-32CX527
Figure 1-2. KDL-40CX527
7
KDL-32CX527/40CX527
KDL-32CX527/40CX527
REFERENCE INFORMATION
RESISTOR
: RN
: RN
METAL FILM
: RC
SOLID
: FPRD NONFLAMMABLE CARBON
: FUSE NONFLAMMABLE FUSIBLE
: RW
: FUSE NONFLAMMABLE FUSIBLE
: RW
NONFLAMMABLE WIREWOUND
: RS
NONFLAMMABLE METAL OXIDE
: RB
NONFLAMMABLE CEMENT
:
ADJUSTMENT RESISTOR
COIL
: LF-8L MICRO INDUCTOR
: LF-8L MICRO INDUCTOR
CAPACITOR
: TA
: TA
TANTALUM
: PS
STYROL
: PP
POLYPROPYLENE
: PT
MYLAR
: MPS
METALIZED POLYESTER
: MPP
METALIZED POLYPROPYLENE
: ALB
BIPOLAR
: ALT
HIGH TEMPERATURE
: ALR
HIGH RIPPLE
G
D
S
B1 E1
C2
B2 C1
E2
2
3
4
5
6
7
8
9
–
1
G
D
S
B2 E2
C1
B1 C2
E1
B2 E2
C1
B1 C2
E1
B2 E2
C1
B1 C2
E1
B1 E1
E2
C1(B2)
C2
B1
E2
C1
C2
(B2)
E1
(B2)
E1
E2
B1
C2
C1
B1
E1
C2
B2
C1
E2
G
S
S
D
G
D
B1
E1
C2
B2
C1
E2
B1
E2
C2
C1(B2)
E2
B1
C1
C2
E1(B2)
C2
B1
C1
E2
E1(B2)
C2
B1
C1
E2
B2
E1
C2
Ver.1.6
Transistor
(FET)
(FET)
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Transistor
Discrete semiconductor
(Chip semiconductors that are not actually used are included.)
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Diode
Source
Source
Anode
Anode
(NC)
(NC)
Cathode
Anode
Cathode
Common
Cathode
Cathode
Common
Cathode
Cathode
Common
Common
Common
Common
Cathode
Anode
Base
Emitter
Collector
Base
Emitter
Collector
Drain
Gate
Gate
Drain
Device
Printed symbol
Terminal name
Circuit
Terminal name of semiconductors in silk screen
printed circuit ( )
Anode
Anode
Anode Cathode
Anode Anode
Cathode
Transistor
(FET)
(FET)
Transistor
(FET)
(FET)
Emitter
Collector
Base
Transistor
Source
Gate
Drain
Cathode
Anode
Anode
Cathode
Anode
Anode
*
18
11
17
16
15
14
13
12
10
21
20
19
23
22
8
KDL-32CX527/40CX527
KDL-32CX527/40CX527
1-3. BLOCK DIAGRAM
27M
[HORUS3]
4M
[ASCOT2Sip]
[GAIA1a]
41M
0
0
[SEKITO2]
[LNBH23]
[MIC2005]
[TPS2553DBV]
[TPS2553DBV]
[GL850G]
[RTL8201E]
12M
One –
NAND
Muxed
2Gb
DDR3
–1333
2Gb
DDR3
–1333
2Gb
48M
32.76
8K
GND
[PST3629]
[LM75B]
[Sil9287B]
[D–510D]
[D–510D]
[NJU72011RB]
[NJU72040V]
H/L
Push
P
A
A
N
E
L
41M
Cable
Satellite
Aerial
HDMI1
(ARC)
HDMI2
HDMI3
HDMI4
CVBS
COMP
PC
HP/Line
Out
SPDIF
Main
SPEAKER
LNA
X’tal
SW
LNA
X’tal
Silicon
Tuner
Silicon
Tuner
X_SYSTEM1_RST
IF1
IF2
Zero-IF
27MHz
Ext Demod
IFAGC
Ext Demod
IFAGC
X’tal
TS1
DiSEqC_Out
DiSEqC_In
DiSEqC_In
TS2
DDC
I2CB
DMD_RST
DMD_CLK_ENABLE1
DMD_CLK_ENABLE2
I2CB
Current
Limit
5V
MS
H Con.
USB4
BD
USB3
Wifi
Current
Limit
5V
USB2
USB1
5V
X_SYS
T
EM1_
RS
T
USB
HUB
Crystal
Current
Limit
X
_
SYSTEM1_
RST
Ether
Ether
PHY
BACKLIGHT
LVDS_ODD
LVDS_EVEN
TCON
SA
_MODE/L
U
T
_
SEL0
PE
M
_
WDT/XBUSY/BI
NT
X
_
PE
M
_
RST/LUT_SEL2/X_FRC_RS
T
MO
DE_PEM/TCON_RDY
LUT_SEL1/X_TCO
N
_RST/LR_FL
A
G
T_P
A
NE
L_SEL
I2C_C
SYSTEM1_PWR
REG_12V
1.2V
DDC
1.5V
SYSTEM2_PWR
DDC
X’tal
X’tal
AC_MON
Reset
Reset
SYSTEM2_PWR
3.3V
DDC
REG_12V
2.5V
LDO
LDO
SYSTEM2_PWR
5V
DDC
3.3V
LDO
LDO
3.4V
LDO
LDO
REG_12V
SYSTEM2_PWR
S1.8V
LDO
S1.2V
LDO
T-CON_VCC
REG12V
REG12V
STBY 3.3V
AUDIO_12V
AUDIO_12V
AUDIO_12V
Power
BACKLIGHT_ON
DIMMER_DC
TCON-ON
MAIN_PWR
BACKLIGHT_MON
PFC_PWR
AC_MON
DIMMER2
Power_Control
UARTA(LOG)
UARTD
PEM_LOG
MODE_PEM
UARTC(Hotel/ECS)
I2CA(Hotel_Clock)
Reset
SIRCS
TL-JIG
Hotel /ECS
Temp Sensor
Sircs
Temp
Sensor
SIRCS
I2CA
X_Hotel_PWR_CTRL
I2CA (EQSW, Temp Sensor, Hotel Clock)
I2CB (Ext Demod)
I2CC (Panel, RGB Sensor)
I2CB (Ext Demod)
I2CC (Panel, RGB Sensor)
UARTA (LOG)
UARTB (RF-Remote)
UARTC (IR Blaster/ECS)
UARTC (IR Blaster/ECS)
KEY
Light Sensor
Human Sensor
LED
Light_Sensor_Det
Human_Sensor_Det
STBY_LED
POWER_LED
TIMER_LED
PIC_MUTE_LED
REC_LED
Power_KEY
KEY
UARTE
DIMMER
DMD_CLK_ENABLE2
DIMMER_DC
LOGO
DEBUG_LED2
DEBUG_LED3
PANEL_PWR
PANEL_PWR
DMD_CLK_ENABLE1
DMD_RST
X_WIFI_RST
HP_DET
DMD_RST
X_WIFI_RST
HP_DET
SPDIF_SEL
HDMIEQ_INT
X_AUDIO_MON
DC
_MON
KEY
Light_Sensor_Det
Hum
a
n_Sensor_Det
PANEL_
SEL
BACK
LIGHT_
MON
PANEL_
PWR_
Det
STBY_LED
TIMER_L
E
D
MA
IN_
P
WR
MA
IN_
S
S_
MON
MON
SYSTEM2_
P
W
R
SYSTEM1_
P
W
R
PIC
_
MUTE
_LE
D
AC
_M
ON
_M
ON
PFC_MON
POWE
R_
KEY
KEY
DEB
U
G_LE
D1
X_
RF_
RF_
R
ST
X_
HOTEL_
HOTEL_
P
WR
_
C
T
RL
POWE
R_
LED
LED
RE
C_
LED
C_
LED
X_
SYSTEM1_R
SYSTEM1_R
S
T
PFC_PWR
X_
AUDIO
AUDIO
_
MUTE1
X_
AUDIO
AUDIO
_
MUTE2
BACK
LIGHT_
ON
NMI
PC
_C
ON_
_C
ON_
D
ET
VI
DE
OA
OA
_DET
VI
DE
OB
OB
_DE
T
CR
_D
ET
ET
LUT_SE
L2
LUT_SE
L1
LUT_SE
L0
B
IN
T
T
TC
O
O
N
_RDY
DATA
1
Panelless
SPI
UART
Digital Audio
I2C
Analog Signal
PWM
Analog Audio
Analog Video
Digital Video/TS/TMDS
X_AUDIO_MUTE1
X_AUDIO_MUTE2
X_FAULT
Main Speaker_Out_LR
X_SYSTEM1_RST
AUDIO_MON
OPAMP
Audio
Power AMP
Main Speaker_Out_LR
Atreyu_SPDIF
TV_Out_LR
Tuner_LR
Line Out_LR
PC_LR
COMP2_LR
PC_V
VIDEO1_LR
Tuner_LR
PC_G
PC_B
PC_R
PC_H
PC_R
PC_H
COMP_Y
COMP_Pb
COMP_Pr
OPAMP
SPDIF
HP/Line Out LR
HP_/ Line Out Det
PC_R,PC_G,PC_B,PC_H,PC_V
PC_LR
PC_5V, PC_DDC
PC_CON_Det
COMP_Y, Pb, Pr
VideoB_Det
VideoB_Det
Cr_Det
COMP2_LR
VideoA_Det
VIDEO_CV
VIDEO1_LR
CEC3
DDC4
HPD4
CEC4
DDC_5V_4
TMDS4
CEC2
DDC3
HPD3
DDC_5V_3
TMDS3
TMDS1
DDC1
DDC1
HPD1
CEC1
TMDS2
DDC2
TMDS2
DDC2
HPD2
DDC_5V_1
DDC_5V_2
ARC
3.3->1
EQ SW
I2CA
Atreyu
TS
X’tal
IF1
TMDS
DDC
CEC
VIDEO_CV
COMP_Y
REG_12V
DIMMER
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