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1.
OUTLINE
• The units in this manual contain a self-diagnostic function.
• If an error occurs, the STANDBY lamp will automatically begin to flash.
The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY lamp
flash indicators is listed in the instruction manual for the user's knowledge and reference.
• If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data
stored in memory to reveal past problems and how often these problems occur.
2.
DIAGNOSTIC TEST INDICATORS
• When an errors occurs, the STANDBY lamp will flash a set number of times to indicate the possible cause of the problem.
If there is more than one error, the lamp will identify the first of the problem areas.
• Result for all of the following diagnostic items are displayed on screen. No error has occured if the screen displays a "0".
Diagnostic
Item
Description
• Power does not
turn on
• +B overcurrent
(OCP) or
overvoltage
(OVP)
• Vertical deflection
stopped
• White balance
failure (no
PICTURE)
Note 1: If a + B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously.
The symptom that is diagnosed first by the microcontroller is displayed on the screen.
Note 2: Refer to screen (G2) Adjustment in section 3-4 of this manual.
• VCR EMG code List
Code
00h
NO EMG
10h
CAM encode NG during unloading
11h
CAM encode NG during unloading
12h
CAM encode NG at intial
20h
T reel NG during unloading
21h
S reel FG NG
22h
T reel FG NG
23h
S reel FG NG
24h
T reel FG NG at initial
25h
S reel FG NG at initial
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SELF DIAGNOSTIC FUNCTION
No. of times
Self-diagnostic
STANDBY lamp
display/Diagnostic
flashes
result
Does not light
—
2 : 0 or
2 times
2 : 1
at the same
4 : 1
time
(Note 1)
4 times
4 : 0
or
4 : 1
5 times
5 : 0
or
5 : 1
Contents
Probable
Cause
Location
• Power cord is not plugged
in.
• Fuse is burned out F901
• FBT
• Q802 (H OUT) shorted
• IC501
• IC301 !¢ pin
• IC606
• Q802 (H OUT) shorted
• Q803
• Q608
• R803 open
• CRT
• IC301
• IC701 - IC703, Q701
(CV board)
• G2 is improperly adjusted.
(Note 2)
Code
Contents
30h
Capstan FG NG at initial
31h
Capstan FG NG
40h
Drum FG NG
41h
Drum FG NG at initial
42h
Drum FG NG
43h
Drum PG NG
44h
Drum PG NG
50h
DEW
60h
FL NG
70h
DEW eject NG
– 5 –
Detected
Symptoms
• Power does not come on.
• No power is supplied to the
TV.
• AC power supply is faulty.
• On standby state.
• Load on power line is
shorted
(at the same time 4 : 1 on
display).
• Has entered standby state
after horizontal raster.
• Vertical deflection pulse is
stopped.
• Horizontal deflection
stopped.
• Power line is shorted or
power supply is stopped.
• No raster is generated.
• CRT cathode current
detection reference pulse
output is small.
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