Read Sony KV-32HS20 Service Manual online
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KV-32HS20/36HS20/36HS20H/32XBR450/36XBR450/36XBR450H
Handling of Self-Diagnostic Screen Display
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen during repairs. When you
have completed the repairs, clear the result display to “0”.
Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after completion of the repairs.
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen during repairs. When you
have completed the repairs, clear the result display to “0”.
Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after completion of the repairs.
Clearing the Result Display
To clear the result display to “0”, press buttons on the Remote Commander sequentially when the diagnostic screen is displayed, as shown below:
To clear the result display to “0”, press buttons on the Remote Commander sequentially when the diagnostic screen is displayed, as shown below:
ENTER
Channel 8
Quitting the Self-Diagnostic Screen
To quit the entire self-diagnostic screen, turn off the power switch on the Remote Commander or the main unit.
To quit the entire self-diagnostic screen, turn off the power switch on the Remote Commander or the main unit.
Self-Diagnostic Circuit
+B overcurrent (OCP)
Occurs when an overcurrent (more
than 6A) on the +B (135V) line is
detected by R6598/R6591. It will cause
Q6520 to turn on and force the AC
relay to turn off through Q6532 and
Q6530.
Occurs when an overcurrent (more
than 6A) on the +B (135V) line is
detected by R6598/R6591. It will cause
Q6520 to turn on and force the AC
relay to turn off through Q6532 and
Q6530.
+B overvoltage (OVP)
Occurs when 1) overvoltage (more
than +140V) on the +B (135V) line
is detected by IC6505, or 2) an
overvoltage (more than 7.5 V) on the
unreg 7V line is detected by D6014.
The AC relay will turn off through
Q6532 and Q6530.
Occurs when 1) overvoltage (more
than +140V) on the +B (135V) line
is detected by IC6505, or 2) an
overvoltage (more than 7.5 V) on the
unreg 7V line is detected by D6014.
The AC relay will turn off through
Q6532 and Q6530.
Vertical Defl ection Stopped
Occurs when an absence of the vertical
defl ection pulse is detected by IC201.
Power supply will shut down when
waveform interval exceeds 2 seconds.
Occurs when an absence of the vertical
defl ection pulse is detected by IC201.
Power supply will shut down when
waveform interval exceeds 2 seconds.
White Balance Failure
If the RGB levels* do not balance within 2 seconds after the power is turned on, this error will be detected by IC201. TV will stay on, but there
will be no picture.
If the RGB levels* do not balance within 2 seconds after the power is turned on, this error will be detected by IC201. TV will stay on, but there
will be no picture.
*(Refers to the RGB levels of the AKB detection Ref pulse that detects 1K).
Low B Error
Occurs when set 5V is out.
Occurs when set 5V is out.
Horizontal Defl ection Stopped
Occurs when either: 1) a +B overcurrent is detected (IC5007), or 2) overheating is detected (Thermistor TH5002).
Occurs when either: 1) a +B overcurrent is detected (IC5007), or 2) overheating is detected (Thermistor TH5002).
Numeral “0” means that no fault
was detected.
was detected.
Numeral “1” means a fault was detected
one time only.
one time only.
SELF DIAGNOSIS
2: +B OCP
2: +B OCP
N/A
3: +B OVP
N/A
4: VSTOP
0
5: AKB
1
101: WDT
24
To Bring Up Screen Test
In standby mode, press buttons on the Remote Commander sequentially,
in rapid succession, as shown below:
In standby mode, press buttons on the Remote Commander sequentially,
in rapid succession, as shown below:
DISPLAY
Channel 5
Sound volume -
Power ON.
AKB
VPROT
HPROT
SCL
SDA
IC701
MAIN UCOM
STBY LED
HA
STR
STBY-LED
OCP
OVP
LOW B ERR
AC RLY
CLKO
DATO
29
30
69
43
45
44
48
Q6532
Q6530
D6537
D6501
Q6527
RY6501
SET ON
200V OCP
+B OCP
OVP
D8027
D8003
0
0
I
UNREG 7V
D6014
D6018
SET 5V
A
A
26
25
58
35
34
CRT
VDY -
R5125
R5104
R5105
IC5007
2
14
Q5018
I5V
2
1
3
A
OVP
D
Q652
STBY 5V
Q6524
Q6521
IC6505
+B OVP
+B
Q6520
IC6007
IC201
Y/C JUNGLE
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