Sony KE-32TS2E / KE-32TS2U Service Manual ▷ View online
-22-
3.3.2
Function of X-SUS Board
(1) DC/DC power supply block
Vs (+80V) Î Vw (+180V)/Vx (+45V) 【UA-1x/6x】
Vs (+80V) Î Vw (+170V)/Vx (+60V) 【UA-7x】
Vcc (+5V) Î XFvcc (+5V, floating)/XFve (+17V, floating)/Ve (+17V)/Vb(-5V)
(2) X switching block
Switching during address period
Switching during sustain period
Switching during reset period
(3) Current detector block
Isx (sustain) current detection
3.3.3
Function of Y-SUS Board
(1) DC/DC power supply block
Vcc (+5V) Î Y Fvcc (+5V, floating)/Y Fve (+17V, floating)/Ve (+17V)
(2) Switching block
Switching during address period
Switching during sustain period
Switching during reset period
(3) Current detector block
Isy (sustain) current detection
Isp (SDM) current detection
3.3.4
Function of PSU Board (jig)
(1) Standby power supply block
AC100–200 Î Vpr1 (+5V)/Vpr2 (+3.3v)
(2) PFC block (AD/DC power supply block)
AC100–200 Î 380V
(3) AD/DC power supply block
+380V Î Vcc (+5V) / Vs (+80V)/Va (+55V)
(4) Current detection block
Ia (address) current detection
(5) Abnormal voltage monitoring
Vs excess voltage monitoring
Va excess voltage monitoring
-23-
3.4 Protection function
Overvoltage
Latch
×
×
×
×
×
×
×
×
×
○
Vaux
Overcurrent
(Note 2)
(Note 2)
Voltage pendency
(no latch）
×
×
×
×
×
×
×
PSU
Heat
sink
Heat
sink
Temperature
Latch
×
×
×
×
×
×
×
×
×
○
State of protection operation (×:State change , There is no change at the blank)
Reactivation
condition when
abnormal content is
excluded
Abnormality part
State
Vw,
Vx
Vs
Va
Vex
Vey
Vcc
Vpr
V
au
x
AC
Re-turni
ng on
PFCgo
Reset
Overvoltage Stop(no
latch)
×
×
×
×
×
×
×
○
○
Vw
Overcurrent Delay
Latch
×
×
×
×
×
×
×
○
○
Overvoltage Stop(no
latch)
×
×
×
×
×
×
×
○
○
Vx
Overcurrent Delay
Latch
×
×
×
×
×
×
×
○
○
Overvoltage Latch
×
×
×
×
×
×
×
○
○
Low voltage
Latch
×
×
×
×
×
×
×
○
○
Vs
Overcurrent Delay
Latch
×
×
×
×
×
×
×
○
○
Overvoltage Latch
×
×
×
×
×
×
×
○
○
Low voltage
Latch
×
×
×
×
×
×
×
○
○
Va
Overcurrent Delay
Latch
×
×
×
×
×
×
×
○
○
Overvoltage Stop(no
latch)
×
×
×
×
×
×
×
○
○
Vex
Vey
Vey
Overcurrent
Voltage
pendency
(no latch)
pendency
(no latch)
×
×
×
×
×
×
×
○
○
Overvoltage Latch
×
×
×
×
×
×
×
○
○
Vcc
Overcurrent Delay
Latch
×
×
×
×
×
×
×
○
○
Overvoltage Latch
×
×
×
×
×
×
×
×
×
○
Vpr1
Overcurrent
Delay Latch
×
×
×
×
×
×
×
×
×
○
Vpr2
Overcurrent
Delay Latch
×
×
×
×
×
×
×
×
×
○
-24-
4. Problem
Analysis
4. 1 Outline of Repair Flow
Operation normal ?
PC board
unacceptable (NG) ?
Client claim
Product block/PDP module block
Locating cause of problem
Is PDP module block
Defective ?
Is the Panel defective ?
PC board replacement/Parts
replacement
Panel replacement/IC
module replacement
PC board
replacement/Parts
replacement
Processing to prevent recurrence
Packing/Shipment
Recheck the problem description
Recheck problem
description
Installation in product
Product problem analysis/Repair
Return of repaired product
End of repair
N
Y
Heat run
Y
N
Product
manufacturer
(Repair center)
Repair center
Product
manufacturer
(Repair center)
Client
Client
N
Repair product
and Claim contents match
PDP module sent to factory
Operation normal ?
Repair product and
claim contents match
Is the panel faulty?
N
N
Y
N
Y
Product runs normally ?
Y
Y
Y
Y
N
N
Y
-25-
Outline of PDP Module Repair Flow
Appearance check
Appearance unacceptable
(NG) ?
Repair of appearance
requested ?
Perform operation test
(Chapter 4.4).
Repair description and returned
product rechecked.
Yes
Does ID of
returned product agree with ID
of actual
Repair defective spots
Problem recurred ?
Receipt of returned product
(Chapter 4.3)
No
Yes
Yes
Yes
No
No
No
Check description of
repair request.
No
Contents match ?
Problem symptom nonrecurrence
analysis mode
Yes
Yes
2
1
3
5
4
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