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Service Modes, Error Codes, and Fault Finding
Table 5-4 NVM default values
EW (EW width)
PW (EW parabola width)
HS (Horizontal shift)
HP (Horizontal parallelogram)
HB (Horizontal Bow)
UCP (EW upper corner parabola)
LCP (EW lower corner parabola)
TC (EW trapezium)
VS (Vertical slope)
VA (Vertical amplitude)
SC (S-Correction)
VSH (Vertical Shift)
VX (Vertical Zoom)
VSL (Vertical scroll)
VL (Vertical linearity)
AGC (AGC Takeover)
OIF (IF-PLL Offset)
AGC10 (AGC 10)
H60 (60 Hz Horizontal Shift)
PF_SC_PWL (Peaking Frequency,
Soft Clipper, Peak White Limit)
COR (Phase 1 time constant,
Video Dependant Coring,
Ratio & White stretch)
60 Hz Vertical amplitude
YD & CL
RGB amplitude for full teletext mode
NVM_TABLE_VERSION
OPTION_TABLE_VERSION
CVI_BLOR
CVI_BLOG
TXT Brightness
V60 offset (60Hz Vertical Amplitude)
FOAB, CHSE
SPR, WS
VMA, SVM
NVM_SOC_SMD
CCC_Preset_Gain_Red
CCC_Preset_Gain_Green
CCC_Preset_Gain_Blue
NVM_FMWS
NVM_ASD_SC1_THR
NVM_CRYSTAL_ALIGN
Last Brightness (VID PP others)
Last Color (VID PP others)
Last Contrast (VID PP others)
Last Sharpness (VID PP others)
Last Hue (VID PP others)
Last Colour Temperature (VID PP others) 269
White-D Cool Red
White-D Cool Blue
White-D Normal Red
White-D Normal Green
White-D Normal Blue
White-D Warm Red
White-D Warm Blue
Last Volume
Last Balance
Last Treble (AUD PP others)
Last Bass (AUD PP others)
5.8.2
Address
Value
(dec)
(hex)
19
25
20
0A
21
1A
22
1F
23
1F
24
1E
25
28
26
1A
27
25
28
1E
29
1C
30
1A
31
19
32
20
33
20
36
1E
37
20
38
1
39
9
40
0A
41
0F
42
40
43
2
46
0C
60
26
61
11
62
1E
63
1C
64
0F
66
FE
139
3
140
0
141
31
142
33
143
1F
144
1F
145
1F
149
2
150
10
208
4F
264
34
265
2C
266
4B
267
37
268
32
0D
294
FD
296
8
297
22
298
20
299
1B
300
2
302
FA
343
19
344
32
345
32
346
32
L04E AA
Power Supply
Set Not Working
Check Power
Supply Mains
Switch
Bridge Rectifier
Not Ok
circuit 6500
Ok
Check DC
voltage at
Not Ok
2505/2507
Ok
Check
Check
fusible
7512
resistor 3532
Figure 5-5 Fault finding tree "Set not working"
Set Does Not Start Up
Set Unable
to Start
Software
No
Fuse Blown?
loaded?
Yes
Load
Software
Check
voltage
across 2552
Is Vbatt
approximately
No
140V
Yes
Check
voltage 2562
&2563
16V
Yes
Check 3V
across 2535
Yes
Check 6V
across 2535
Yes
Figure 5-6 Fault finding tree "Set does not start up"
5.
EN 15
Check fusible
resistor 3510 &
circuit before it
Check IC7511 &
IC7531
Ok
Check other
Set able to
fusible resistor
No
start-up
and capacitor in
the circuit
Yes
End
E_14480_057.eps
190204
Change
Yes
Fuse
Check Power
Supply circuit
No
Set able to
Check Line
No
Start
Transistor 7405
Yes
End
E_14480_058.eps
170204
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