akira CT-14XBS1 User manual

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CHASSIS:TB-8803
MODEL:
CT-14XBS1

3
Model No: CT-14XBS1
Version 1.0
CONTENT
GENERAL DESCRIPTION..................................................................................................................... 4
CONNECTOR VIEW .............................................................................................................................. 5
SAFETY INSTRUCTIONS ..................................................................................................................... 5
CIRCUIT ADJUSTMENTS..................................................................................................................... 6
FAULT FINDING TREES, DIAGRAMS AND OVERVIEWS............................................................ 12
VARIOUS PARAMETERS OF INTEGRATED CIRCUIT.................................................................. 25
THE BUS DATA FOR TMPA8803....................................................................................................... 25
ELECTRICAL PARTS LIST................................................................................................................. 28
CIRCUIT DIAGRAM ............................................................................................................................ 37

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Model No: CT-14XBS1
Version 1.0
GENERAL DESCRIPTION
AKTP01 /02 chassis series are applied A14T02/A14T02a respectively which uses mainly TOSHIBA’
advanced UOC-ultimate chip TMPA8803/8821 and I2C-bus controlled IC With combination of micro
controller and small signal processor, the TMPA8803/8821 series feature high-integration, high-
performance-to-price ratio and high-reliability and advanced functions with fewer external
components, which provide much convenience for manufacturing and technical service.
Figure 1: shows the block diagram of AKTP01 (A14T02).
Table 1: provides A14T02 mainly ICs and functions.
Figure 2: shows the whole set power supply system for AKTP01 (A14T02).
Figure 3: shows the system control circuit of AKTP01 (A14T02).
Table 1: A14T02 mainly ICs and functions
Position Type Function Description
N204 TMPA8803/23/21 Micro controller and small signal processor (UOC)
N901 ST24C16-W EEPROM
N701 LA4267 Sound power amplifier
N402 LA78040 Vertical scan output stage circuit
N203 LC4053B/CD4053B AV1/AV2 Switch

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ModelNo:CT-14XBS1
Version 1.0
Y IN
Cr IN
Cb IN
VIDEO IN2
AUDIO IN2
VIDEO IN1
AUDIO IN1
VIDEO OUT
AUDIO OUT
L/H
U/V
REMOTE INPUT
HEAT
FOCUS EHT SCREEN
G
AUDIO IN
VIDEO IN
IF IN
IF IN
CRT
+300V
TOSHIBA UOC
TMPA8803/21/23
VIDEO or AUDIO
AV1/AV2 SWITH
(N203)CD4053
13
1
2
12
910 11
15
14
AUDIO AMPLIFIER
(N701) LA4267
SP701
16Ω
SP702
16Ω
7
C700
V103 V102
IF PRE –AMP
(V101)
SAWF
Z101
POWER SUPPLY
CIRCUIT
V512、V513、V511、
T501、VD515
Resistance
disturbance
C501、L502
AC150-260V
50/60Hz Bridge
rectification
VD503-VD506
Filter
C507
VIDEO
AMPLIFIER
V601
V611
V621
FIELD OUTPUT
POWER AMP.
N402(LA78040)
HORIZONTAL
DRIVE
V444
T401
HORIZONTAL
OUTPUT
V411
FBT(T402)
BSC23
MEMORY
(N901)
ST24C16
KEY BOARD
REMOTE
RECEIVER
A901
114V
HF TUNER
A101
146V
24V
13V
19V
41
42
SIF TRAPS
Z302,Z304
V201
38
V202
61 30 24 32 2021 19
SWICH
52
51
50 R
B
28
5
16
1 5
V. O U T
13
1
2
3
63 58 57
6
5
BAND1 BAND2