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PDF TMPA8823 Data sheet ( Hoja de datos )
| Número de pieza | TMPA8823 | |
| Descripción | 5VA4 SERVICE MANUAL | |
| Fabricantes | Sanyo | |
| Logotipo |  |
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TMPA 8823-5VA4 SERVICE MANUAL
CONTENT
(1) General-----------------------------------------------------------------------------1
(2) Frame Chart-------------------------------------------------------------------fig.1
(3) IC Function Introduction ------------------------------------------------------1
3.1 N501 TMPA8823-----------------------------------------------------2
3.2 N002 ST4053 ----------------------------------------------------------3
3.3 N301 LA78040 ------------------------------------------------------------4
3.4 N601 AN7522----------------------------------------------------------4
(4) I2C Bus Control ------------------------------------------------------------------5
4.1 Menu Entry -------------------------------------------------5
4.2 Item Introduction -----------------------------------------------------------5
(5) IC Voltage --------------------------------------------------------------8
(6) Trouble shorting------------------------------------------------------------------9
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1
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1 page  
3.3 N301 LA78040 Function: V-scan output
PIN FUNCTION
1 Vertical feedback
2 Vertical working power supply
3 Pump power supply
4 Ground
5 Vertical output
6 Vertical protection
7 Vertical drive signal input
3.4 N601 AN7522 Function: Audio power amplifier
Name
Vcc
L Out
Pin
1
2，4
Function
Sound working voltage （+12V）
Sound siqnal output
Gnd 3 Ground
Mute
5 Standby
L In 6 Audio signal L input
Gnd 7 Ground
R In 8 Audio signal R input
Volume
9 Sound volume DC level 1 control
R Out
10,12 Sound siqnal output
Gnd 11 Ground
(4) I2C Bus Control
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4.1 Menu Entry
Press “D” button on the factory remote control to enter the “D” mode, the letter “D” will be displayed at the upper
right coner and the adjusting items will be displayed at the upper left conrer. Press the channel +/- to select the
preferred item; press the volume +/- to adjust the value of each item.
4.2 Item introduction
TMPA8823/5VA4 BUS DATA
RCUT
GCUT
BCUT
GDRV
BDRV
CNTX
BRTC
COLC
TNTC
COLP
Comment
R CUTOFF
G CUTOFF
B CUTOFF
G DRIVE
B DRIVE
SUB CONTRAST
SUB BRIGHT CEN
SUB TINT CEN
PAL SUB COLOR
int Max
2C FF
20 FF
47 FF
3B 7F
37 7F
7F 7F
51 7F
2C 7F
40 7F
00 7F
12
20
20
20
40
40
7F
50
40
40
00
R Cut off 00:-0.65V, 80:0V, FF:0.65V
G Cut off 00:-0.65V, 80:0V, FF:0.65V
B Cut off 00:-0.65V, 80:0V, FF:0.65V
G Drive Gain 00:-4.5dB, 40:0dB, 7F:3.5dB
B Drive Gain 00:-4.5dB, 40:0dB, 7F:3.5dB
Unicolor 00:-20dB, 40:-5dB, 7F:0dB
Brightness 00:1.5V(pedestal level), 40:2.5V,
Color 00:color mute, 01:-22dB or less, 7f:5.7dB
Tint: 00:-35°, 40:0°, 7F:35°
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5 Page 
(6). Trouble shorting
T804
9
Rectifying
and
Detection
B1
+115V
Rectifying
12 and
Detection
B2
+27V
H.OUT
Power supply
V.OUT
Power supply
Rectifying
16 and
Detection
B3
+12V
Audio
Power
supply
Power supply outline
6.1 No grating, no picture, no sound
General, these failures are produced by power sources, because of which refer to a wider area, so that can be divided them
two conditions to explain: no B1 115 V and existing B1 115V.
(1) No B1 (115 V) voltage (voltage of network 220 V ac)
These failures may be caused by power supply switch.
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Check voltage+B
0V
0V
Check C807,V813
at
condition of
short-circuit?
Y
Replace the
parts of
failure
Check C807(+) voltage
300V
Check V813 b
voltage
0V
Check R820 R811
V813
0.5V
Check V813 b voltage
0.7V 0
(2) Existing B1 115 V
Check T804
Check VD814 VD817
VD818 C814 C815
C817
These failures may be caused by abnormal operation of horizontal scan, to confirm which can observe the filament of
10
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11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet TMPA8823.PDF ] | |
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