Sony KF-60DX100K Service Manual ▷ View online
– 5 –
KF-60DX100K
RM-Y910K
SECTION 1
SELF DIAGNOSIS FUNCTION
3. Blinking count display of STANDBY/STEREO indicator
1. Summary of Self-Diagnosis Function
• This device includes a self-diagnosis function.
• In case of abnormalities, the STANDBY/STEREO indicator automatically blinks. It is possible to predict the abnormality location
by the number of blinks. The Instruction Manual describes blinking of the STANDBY/STEREO indicator.
• If the symptom is not reproduced sometimes in case of a malfunction, there is recording of whether a malfunction was generated or
not. Operate the remote command to confirm the matter on the screen and to predict the location of the abnormality.
2. Diagnosis Items and Prediction of Malfunction Location
• When a malfunction occurs the STANDBY/STEREO indicator only blinks for one of the following diagnosis items. In case of two
or more malfunctions, the item which first occurred blinks. If the malfunctions occurred simultaneously, the item with the lower
blink count blinks first.
• The screen display displays the results regarding all the diagnosis items listed below. The display “ 0 ” means that no malfunctions
occurred.
STANDBY/STEREO
TIMER
LAMP
Lamp OFF :
3.0 seconds
3.0 seconds
Lamp ON : 0.3 seconds
Lamp OFF : 0.3 seconds
Release of STANDBY/STEREO indicator blinking.
•
The STANDBY/STEREO indicator blinking display is released by removing the plug
from the power or leaving for 2 minutes.
from the power or leaving for 2 minutes.
*
One blink is not used for self-diagnosis.
•EXAMPLE
<Diagnosis Items> <Number of Blinks>
• Lamp Cover
3 times
• FAN
4 times
Detected symptoms
Diagnosis Item
Probable Cause Location
• Power cord is not plugged in.
• Fuse is burned out (F1601) (G board)
• Fuse is burned out (F1601) (G board)
• Power does not come on.
• No power is supplied to the unit.
• AC power supply is faulty.
• No power is supplied to the unit.
• AC power supply is faulty.
Power does not turn on
• Lamp cover is not attached securely.
• No picture/No sound
Lamp cover error
• FAN1 or FAN2 power is not supplied. (A board)
• FAN connector is not attached securely.
• FAN connector is not attached securely.
• No picture/No sound
FAN stopped
Lamp driver error
• Lamp driver is faulty.
• No picture/No sound
• +5 V is not supplied. (G board)
• No picture/No sound
Low B error
• Audio
±
15 V line is shorted. (A, G board)
• IC1203 or IC1204 is faulty. (A board)
• PS1601 or 1602 is opened. (G board)
• PS1601 or 1602 is opened. (G board)
Audio error
• No picture/No sound
Lamp error
• Lamp for the light souce burns out.
• No picture/No sound
No. of times
STANDBY/STEREO
indicator blinks
0
3 times
4 times
5 times
6 times
9 times
LAMP LED
flashes
– 6 –
KF-60DX100K
RM-Y910K
4. Self-Diagnosis screen displays
• In cases of malfunctions where it is not possible to determine the symptom such as when the power goes off occasionally or when the
screen disappears occasionally, there is a screen display on whether the malfunction occurred or not in the past (and whether the
detection circuit operated or not) in order to allow confirmation.
<Screen Display Method>
• Quickly press the remote command button in the following order from the standby state.
5. Self-Diagnosis Screen Display
• The results display is not automatically cleared. In case of repairs and after repairs, check the self-diagnosis screen and be sure to
return the results display to “ 0 ”.
• If the results display is not returned to “ 0 ” it will not be possible to judge a new malfunction after completing repairs.
<Method of Clearing Results Display>
<Method of Ending Self-Diagnosis Screen>
• When ending the self-diagnosis screen completely, turn the power switch OFF on the remote commander or the main unit.
1. Power off (Set to the standby mode)
2. DISPLAY b Channel 5 b VOL + b POWER (Service Mode)
3. Channel 8 b ENTER (Test reset = Factory preset condition)
Self-Diagnosis screen display
J
Be aware that this differs from the method of
entering the service mode (volume + ).
DISPLAY b Channel 5 b VOL – b POWER
Self Diagnosis
6:Low B
0
9:AUDIO
1
101:WDT
0
Numeral “1” means a fault was
detected one time or more.
detected one time or more.
Numeral “0” means that no fault
was detected.
was detected.
MAIN
Move the ioystick
B
/
b
SELF DIAGNOSIS
1:LAMP
1
3:LAMP COVER
0
4:FAN
0
5:LAMP DRIVER
0
201:WDT-ENGINE
0
LCD ENGINE
– 7 –
KF-60DX100K
RM-Y910K
6. Self-Diagnosis function operation
3 : Lamp Cover
When lamp cover SW is opened then pin
4
of CN1908 on the A board is high, LCD Engine
µ
-com (IC9502)
detects it and make turn off the lamp.
4 : FAN Stop
When FAN1 or FAN2 is stopped then pin
8
or
q;
of CN1908 on the A board is high, LCD Engine
µ
-com
(IC9502) detects it and make turn off the lamp.
5 : Lamp Driver
When lamp is not turned on then pin
wl
of LCD Engine
µ
-com (IC9502) is high, checks pin
wk
of LCD Engine
µ
-com . If pin
wk
is low, it is judged no High Voltage.
6 : Low B
Detect +5 V line failure.
9 : Audio
When DC is appeared by audio amp failure at speaker line.
Then it is detected by MAIN
µ
-com (IC9004) and it turns off the main power.
LAMP : Lamp error
When lamp is not turned on then pin
wl
of LCD Engine
µ
-com (IC9502) is high, checks pin
wk
of LCD Engine
µ
-com. If pin
wk
is high, it is judged lamp is burned out.
Self-Diagnosis block diagram
24 AUDIO PROT
43 LOW B ERR
D1902
CN1908
D1901
M board
A board
T board
IC9004
MAIN CPU
+5V DETECT
LAMP
DRIVER
LAMP
HV DETECT
FAN1
FAN2
IC9502
LCD ENGINE
+5V
LAMP DRV
HV DET
LAMP PROT
28
FAN PROT 24
LAMP PROT 29
3. Lamp Cover
LAMP COV
HV DET
LAMP PRT
FAN1 PR
FAN2 PR
4. FAN Stop
9. Audio
6. Low B
LAMP COV 27
Q9505,9507-9509
S8001
DC DETECT
Q1211, 1213,1215
IC9005
AUDIO AMP
IC1203, 1204
4
12
3
8
10
– 8 –
KF-60DX100K
K
RM-Y910K
SECTION 2
DISASSEMBLY
2-1. REAR COVER ASSEMBLY
2-3. POWER BLOCK REMOVAL
2-2. OU BRACKET REMOVAL
2-4. SERVICE POSITION
2
Rear cover
assembly
assembly
1
Six screws
(+BVTP 4 x 16)
(+BVTP 4 x 16)
1
Eight screws
(+BVTP 4 x 16)
(+BVTP 4 x 16)
1
Six screws
(+BVTP 4 x 16)
(+BVTP 4 x 16)
2
OU bracket
3
Three screws
(+BVTP 3 x 12)
(+BVTP 3 x 12)
7
Power block
6
Ballast
bracket
bracket
4
Ballast cover
5
Two screws
(+BVTP 3 x 12)
(+BVTP 3 x 12)
1
2
Two screws
(+BVWHTP 3 x 12)
(+BVWHTP 3 x 12)
2
Cabinet stay (L)
1
Screw
(+BVTP 4 x 16)
(+BVTP 4 x 16)
3
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