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SM-20-F3BHP MONO
Schematic
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PANORAMIC SM-20-F3BHP MONO, TVP-2015AD Schematic

SERVICE MANUAL Colour Television
Product Code: 111325927
Original Ver sion
Chassis Series: LA5-A
F3BHP
FILE NO.
Model No. TVP-2015AD
Service Ref. No.TVP-2015AD-00
Give complete “SERVICE REF. NO.” for parts order or servicing. It is shown on the rating plate at the cabinet back of the unit.
This T.V. receiver will not work properly in foreign countries where the television trans­mission system and power source differ from the design specifications.Refer to the specifi­cation table.
Specifications
Power Source . . . . . . . . . AC220V, 50Hz / 60Hz
Receiving System . . . . . .PAL (M/M, N/N), NTSC (M/M)
Channel Coverage
Antenna mode VHF:CH02-CH13, UHF: CH14-CH69
CATV mode VHF band:CH01-CH13, Mid band: CH14-CH22
Super band: CH23-CH36, Hyper band: CH37-CH64 Ultra band: CH65-CH94 and CH100-CH125
Low mid band: CH95-CH99
Video IF . . . . . . . . . . . . . 45.75MHz
Aerial Input Impedance . . 75Ω Ext.Terminals
Video inputs: Phono jack ✕ 2 (1Vp - p, 75Ω)
Audio inputs: Phono jack ✕ 2 (436mVrms, more than 40KΩ)
Sound Output (RMS) . . . . 2W
Speakers . . . . . . . . . . . 5 cm x 9 cm x 2 pcs.
Dimensions . . . . . . . . . 496 (W) ✕ 463 (H) ✕ 471 (D) mm
Weight . . . . . . . . . . . . . approx. 17.4 Kg
Specifications subject to change without notice.
VIDEO
MENU
CH
-
+
AUDIO
Panoramic
JXMRR
Contents
-2-
Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Chassis Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
IC Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Service Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14
Purity and Convergence Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Chassis Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-23
Safety Notice
SAFETY PRECAUTIONS
1: An isolation transformer should be connected in the
power line between the receiver and the AC line when a service is performed on the primar y of the converter transformer of the set.
2: Comply with all caution and safety-related notes pro-
vided on the cabinet back, inside the cabinet, on the chassis or the picture tube.
3: When replacing a chassis in the cabinet, always be
certain that all the protective devices are installed properly, such as, control knobs, adjustment covers or shields, barriers, isolation resistor-capacitor net­works etc.. Before returning any television to the customer, the service technician must be sure that it is completely safe to operate without danger of electrical shock.
X-RADIATION PRECAUTION
The primary source of X-RADIATION in television receiver is the picture tube.The picture tube is specially con­structed to limit X-RADIATION emissions.For continued X-RADIATION protection, the replacement tube must be the same type as the original including suffix letter.Excessive high voltage may produce potentially hazardous X
- RADIATION. To avoid such hazards, the high voltage must be maintained within specified limit.Refer to this ser­vice manual, high voltage adjustment for specific high voltage limit. If high voltage exceeds specified limits, take necessary corrective action.Carefully follow the instructions for + B1 volt po w er supply adjustment, and high volt­age check to maintain the high voltage within the specified limits.
PRODUCT SAFETY NOTICE
Product safety should be considered when a component replacement is made in any area of a receiver. Components indicated by mark in the parts list and the schematic diagram designate components in which safety can be of special significance. It is par ticularly recommended that only par ts designated on the par ts list in this manual be used for component replacement designated by mark . No deviations from resistance wattage or voltage ratings may be made for replacement items designated by mark .
Chassis Block Diagrams
-3-
T611B
Q432
IC501
LA78040
VERT-OUT
T471
HV
IC802
5
6
3
4
TUNER
SAW
IC201
LA76818A
AUDIO AMP.
IC001
SDA
SCL
ON-TIME
STANDBY
RGB
BLK
OSD
32
31
19
20
21
22
SDA
SCL
1
2
X161
A101
ANT
IF IN
5/6
SCL
SDA
R
G
B
BLK
12
11
14 15
16
17
42
EXT VIDEO IN
K1001
K1002A
REAR AV IN
FRONT AV IN
VIDEO
VIDEO
AUDIO
AUDIO
19
20
21
R
G
B
7
AC
POWER
CIRCUIT
CONVERTER
TRANS.
130V (MAIN HIGH)
20V (AUDIO)
12V (MAIN LOW)
24V (VERT)
9V
IC202
REG.IC
5V-2
REG.IC
IC681
5VRC
2723
HORIZ-OUT
FBT
VERT.OUT
HORIZ.OUT
EXT AUDIO IN
LA4266_2W
1
AUDIO OUTPUT
51
5
Q901
CRT
IF/VIDEO/CHROMA/DEFLECTION
(WITH PLL)
FILTER
MEMORY
IIC BUS CONTROL
15
C-CAPTION IN
40
SELECTED VIDEO OUT
IC801
CPU
QXXAVC479P
SP901
DEFLECTION YOKE
SP902
MAIN SIGNAL PROCESSING CIRCUIT
Chassis Block Diagrams
-4-
SYSTEM CONTROL
IC802
IC801
CPU
QXXAVC479P
5
6
3
4
SDA
SCL
31
19
20
21
22
1
2
MEMORY
15
17
27
6
18
10
12
13
29
23
28
7
CPU OSC IN
OSC
CPU OSC OUT
SOUND MUTE OUT
(ACTIVE=HIGH)
IC001
AUDIO AMP.
RESET IN (RESET=LOW)
KEY
SWITCH
KEY SWITCH IN
RC PRE-AMP
RC SIGNAL IN
RELAY ON/OFF OUT FOR DEGAUSSING
(ON=HIGH)
POWER ON/OFF OUT
LED
(RED)
POWER CIRCUIT
SDA
SCL
A101
TUNER
IC201
IF/VIDEO/CHROMA
DEFLECTION
CIRCUIT
POWER CIRCUIT
etc.
AFT S-CURVE IN
C-CAPTION IN
OSD BLK OUT
OSD RED OUT
OSD GREEN OUT
OSD BLUE OUT
HORIZ. SYNC. IN
VERT. SYNC. IN
POWER PROTECT IN
(POWER ERROR=LOW)
(STANDBY=LOW)
IC Block Diagrams
-5-
IC201 < IF/Video/Chroma/Def. > LA76818A
1
DC
VOL
SW
FM
DET
2
3
4
56
IF
AGC
RF
AGC
VIF
7
8
9
10
IF
VCC 5V
11
12
13
BUS
PEAKING
CORING
BLACK
STRETCH
SYNC
SEP
14
15
ABL
DC
REST
CLAMP
OSD
CONTRAST
BRIGHT
16
17
18
19 20
CONTRAST
BRIGHT
RGB
MATRIX
OSD
SW
DRIVE/OUT-OFF
VCC
21
22
23
FSC/
SYNC SW
24
25
26 27
VER
RAMP
HOR
VCC
H
VCC
VER
C/D
HOR
OUT
PHASE
SHIFTER
AFC2
AFC1
VER
SEP
HOR
C/D
1/256
COLOR
CLAMP
LPF
ALC
+
SW
CLAMP
DEMO
PAL
SW
ACC
BPF
ON/OFF
DELAY
LINE
SW
TRAP
AFT
VIDEO
DET
TRAP
LIM
AMP
BPF
SPLL
BPF
VIDEO
AMP
IF
IDENT
VIDEO
SW
APC1
TINT
VXO
DDS
APC2
DC ADS.
CLAMP
VCO
1H DELAY
HOR
VCO
FBP
2829
30
31
32
1H
VCC
33
34
353637
38
39
40
41
42
CLMP
43
4445
CLMP
V/C VCC
5V
46
47
48
4950
A2C
PLL
51
525354
Audio Output
FM Output/Selected Audio Output
PIF AGC
RF AGC Output
PIF Input1
PIF Input 2
IF Ground
IF Vcc
FM Filter
AFT Output
Bus Data
Bus Clock
ABL
Red Input
Green Input
Blue Input
Fast Blanking Input
RGB Vcc
Red Output
Green Output
Blue Output
fsc output or C Sync output
Vertical Output
Ramp ALC Filter
Horizontal/BUS Vcc
Horizontal Output
Horizontal AFC Filter
Flyback Pulse Input
VCO IREF
Clock (4MHz) Outupt
CCD Vcc
CCD Filter
CCD/Horizontal Ground
SECAM B-Y Input (Cb Input)
SECAM R-Y Input (Cr Input)
Chroma APC2 Filter
Clamp Filter
4.43 MHz Crystal
Chroma APC1 Filter
Selected Video Output
Video/Vertical/BUS Ground
External Video Input(Y-IN)
Video/Vertical Vcc
Internal Video Input (S-C IN)
Black Level Detector
Video Output
VCO Filter
VCO Coil 2
VCO Coil 1
APC Filter
Ext. Audio Input
SIF Output
SIF APC Filter
SIF Input
IC Block Diagrams
-6-
IC201 <IF System Block Diagram> LA76818A
11
12
BUS
Interface
SAW
5
6
4
8
7
PIF
In1
PIF
In2
IF In
9V
30K
RF AGC
Out
120K
IF VCC
IF
GND
VIF AMP
VIF 1
VIF 2
VIF 3
IF AGC
Drive
RF
AGC
2ndIF
AGC
RF AGC
Delay
6bit
IF AGC
Def
1bit
+
-
(6 Vcc)/7
To
BUS
3
0.022u
PIF
AGC
IF
AGC
Data
Clock
APC
Det
+π/4
-π/4
Snd
Det
Amp
52
SIF.Out
Sound
Trap
Video
Det
Buzz
Canceller
50
APC
Filter
330
0.47u
+
PLL Pull-in SW
To
BUS
Lock
Det
Video.Level
3bit
Amp
54
10p
SIF.In
Sound
BPF
VCO.Coil
VCO
COIL1
VCO
COIL2
48
49
VIF
VCO
Chroma
Counter
B/N
INV
IF
Ident
OSC
C/D
Amp
SIF. Sys
2bit
pre-
scaller
SIF
VCO
500K
BPF
SIF
APC
Filter
1K
0.01u
1000p
53
LIM
AMP
FM
Det
FM.Level
5bit
Chroma
C/D
APC
Det
500K
Det
To
BUS
Chroma
VCO
VIF
Counter
Reset
Pulse
VCO
Ident
VIF.Sys
2bit
Phase
Detector
A.MUTE
1bit
VOLUME
D/A
VOLUME
Filter
A.SW
1bit
Input
Select
VOLUME
(ATT)
-
+
-
+
2.5V
Amp
FM Gain
1bit
Deem-TC
1bit
De-
emph
FM Mute
1 bit
2
9
46
51
1
A.Fil.Def
1bit
VOLUME
7bit
47
VCO
Alignment
AFT
10
AFT
Vcc
100K
100K
0.1u
VCO
Filter
+
0.47u
Audio.out
+
Audio in
10u
Video
Out
FM
Filter
+
1u
FM
Out
0.01u
+
to BUS Line
+
IC Block Diagrams
-7-
IC001 < Audio AMP. > LA4266-E
1
2
3
PRE GND
4
6
7
8
9
NC
10
AMP
5
POWER GND
NC
FILTER
NC
VCC
INPUT
OUT PUT
NFL
30KΩ
300Ω
Thermal
Protection
-
+
AMP
Pump
Up
1
INVERTING
INPUT
2
Vcc
3
PUMP UP
OUT
4
GND
5
Ver. OUTPUT
6
OUTPUT
STAGE Vcc
7
NON INV.
INPUT
IC501 < Ver tical Output > LA78040N-E, TDA9302H
-8-
Service Adjustments
MENU
CH
S1.00110000 S2.01111000
ADDRESS DATA
02 H-PHA 08
Item No.
Item
Data value
General
This set has an On-screen Service Menu system included in the CPU that allows remote operation for most of the service adjustments.
2. Ser vice Adjustments:
Press the CHANNEL UP or CHANNEL DOWN button on the remote control handset to select the desired service menu item you want to adjust.
Use the VOLUME + or-to adjust the data.The + or
-
button will increase or decrease the data
sequentially.
3. Exit from the Service Menu
Press the MENU button to turn off the Service Menu display. The data which is set in the service mode is stored into the memory IC automatically.
[ Service Mode Display ]
MENU
Service Adjustment-1
1. Enter the Ser vice Menu
While pressing the MENU button on the television, press the Number Key 2 on the remote control unit. The Service Menu now appear.
IC802 (EEPROM) Replacement
When IC802 (EEPROM) is replaced, IC801 (CPU) will automatically write the initial reference data into IC802 for basic TV operation. However, the bus data should be checked and some bus data should be set up before attempting the service adjustments. (See pages 9 ~ 10 for detailed information.)
Initial Bus Data Setup
Note: When IC802 (EEPROM) is replaced, following Service Menu should be set up for proper TV operation before attempting the
service adjustments.
NO.01 RFAGC (Adjust the data 06 to10) NO.82 CHMT (Adjust the data 12 to 05) NO.308 R08 (Adjust the data FF to 21) NO.05 V-SCO (Adjust the data 17 to 11) NO.84 RELAY (Adjust the data 80 to 20) NO.309 R09 (Adjust the data FF to 95) NO.06 V-LIN (Adjust the data 15 to 16) NO.85 CCD (Adjust the data 26 to 31) NO.310 R10 (Adjust the data FF to 50) NO.11 VLI60 (Adjust the data +1 to 0) NO.300 R00 (Adjust the data FF to 93) NO.311 R11 (Adjust the data FF to 00) NO.19 RDRIV (Adjust the data 63 to 64) NO.301 R01 (Adjust the data FF to 0E) ↓↓ NO.20 GDRIV (Adjust the data 07 to 08) NO.302 R02 (Adjust the data FF to 00) NO.371 R71 (Adjust the data FF to 00) NO.21 BDRIV (Adjust the data 63 to 64) NO.303 R03 (Adjust the data FF to 00) NO.372 R72 (Adjust the data FF to A2) NO.24 B-YD (Adjust the data 10 to 08) NO.304 R04 (Adjust the data FF to 01) NO.25 R-YD (Adjust the data 10 to 08) NO.305 R05 (Adjust the data FF to 00) NO.68 AFCAV (Adjust the data 00 to 01) NO.306 R06 (Adjust the data FF to 00) NO.81 POMT (Adjust the data 12 to 08) NO.307 R07 (Adjust the data FF to 00)
VOLUME +
VOLUME
-
CHANNEL UP
CHANNEL DOWN
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