Text preview for : PHILCO PM1414 chasis LA5-A.pdf part of PHILCO PM1414 CHASIS LA5-A (MONO) usado en:
NOBLEX: 14TC659 / 20TC660 / 20TC661 / 21TC661 / 21TC662
PANORAMIC: TVP2015AD
PHILCO: PM1414 / PM1424 / PM2014 / PM2024
SANSEI: TS4114 / TS4120
SANYO: C20LB88B / C20LB88M / C14LT88M
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FILE NO.
SERVICE MANUAL Colour Television Model No. PM1414
(Argentina)
Service Ref. No. PM1414-00
MENU CH VOL
JXMRR
Specifications
Power Source . . . . . . . . .AC220V, 50Hz / 60Hz Product Code: 111342014
Receiving System . . . . . .PAL (M/M, N/N), NTSC (M/M)
Channel Coverage
Antenna mode VHF: CH02-CH13, UHF: CH14-CH69 Original Version
CATV mode VHF band: CH01-CH13, Mid band: CH14-CH22
Super band: CH23-CH36, Hyper band: CH37-CH64 Chassis Series: LA5-A
Ultra band: CH65-CH94 and CH100-CH125
Low mid band: CH95-CH99
Video IF . . . . . . . . . . . . . 45.75MHz
Aerial Input Impedance . . 75
Ext. Terminals Give complete "SERVICE REF. NO." for parts
Video inputs: Phono jack 2 (1Vp - p, 75) order or servicing. It is shown on the rating
Audio inputs: Phono jack 2 (436mVrms, more than 40K) plate at the cabinet back of the unit.
Headphone Jack (Mono) 1
Sound Output (RMS) . . . . 2W
Speakers . . . . . . . . . . . 5 cm x 9 cm x 1 pc.
Dimensions . . . . . . . . . 377 (W) 355 (H) 384.5 (D)mm This T.V. receiver will not work properly in
Weight . . . . . . . . . . . . . approx. 8.7 Kg foreign countries where the television trans-
mission system and power source differ from
the design specifications. Refer to the specifi-
Specifications subject to change without notice. cation table.
F8FS
Contents
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 3: When replacing a chassis in the cabinet, always be
power line between the receiver and the AC line certain that all the protective devices are installed
when a service is performed on the primary of the properly, such as, control knobs, adjustment covers
converter transformer of the set. or shields, barriers, isolation resistor-capacitor net-
works etc.. Before returning any television to the
2: Comply with all caution and safety-related notes pro- customer, the service technician must be sure that
vided on the cabinet back, inside the cabinet, on the it is completely safe to operate without danger of
chassis or the picture tube. electrical shock.
X-RADIATION PRECAUTION
The primary source of X-RADIATION in television receiver is the picture tube. The picture tube is specially con-
structed 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 ser-
vice 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 power supply adjustment, and high volt-
age 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 particularly recommended that only parts designated on the parts 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 .
-2-
K1001 K1002
REAR AVIN FRONT AVIN
VIDEO A-L VIDEO A-L
IC802
5 MEMORY 6
SDA SCL
3 4 32 ON-TIME
31 STANDBY
IC801 15
C-CAPTION IN AUDIO
CPU AMP 7
Chassis Block Diagrams
QXXAVC479P IC001
MAIN SIGNAL PROCESSING CIRCUIT
19
R
LA4266_2W
20 G
OSD 5
21 B
EXT AUDIO IN
EXT VIDEO IN
22 BLK
-3-
1
SDA IIC BUS CONTROL
2 SCL
ANT
SELECTED VIDEO OUT
R
G
B
SCL
SDA
BLK
AUDIO OUTPUT
12 11 14 15 16 17 40 51 42 1
19 R Q900
IF IN
5/6 IC201 20
G CRT
TUNER SAW
FILTER B
(WITH PLL) LA76818AM 21
T611B X161 IF/VIDEO/CHROMA/DEFLECTION 23 27
A101 CONVERTER T471 HV
TRANS FBT
Q432
HORIZ-OUT
VERT.OUT
12V(MAIN LOW)
HORIZ.OUT
9V REG.IC 5V-2
20V(AUDIO)
POWER IC202
AC CIRCUIT 130V(MAIN HIGH)
24V(VERT) REG.IC 5VRC
IC501
IC681 LA78040
VERT-OUT
*Stereo Model
only
SYSTEM CONTROL
IC001
QXXAVC479P
Chassis Block Diagrams
C-CAPTION IN
15
-4-
IC Block Diagrams
IC201 < IF/Video/Chroma/Def. > LA76818A
VOL
BPF
SW
DC
54
Audio Output SIF Input
DET
AMP
BPF
1
LIM
FM
SPLL
FM Output/Selected
53
SIF APC Filter
2
Audio Output
52
SIF Output
AGC
PIF AGC
3
IF
AGC
RF
51
RF AGC Output Ext. Audio Input
4
VIDEO
VIDEO
50
TRAP
PIF Input1 APC Filter
AMP
5
DET
VIF
49
PIF Input 2 VCO Coil 1
6
A2C
PLL
48
IF Ground VCO Coil 2
7
VCC 5V
47
IF Vcc VCO Filter
IF
8
IDENT
AFT
46
IF
FM Filter Video Output
9
45
10
AFT Output Black Level Detector
PEAKING
DELAY
VIDEO
CORING
TRAP
LINE
CLMP
SW
44
Internal Video Input (S-C IN)
11
Bus Data
BUS
V/C VCC
43
12
Video/Vertical Vcc
5V
Bus Clock
STRETCH
SYNC
BLACK
SEP
SW
CLMP
ABL
42
13
ABL External Video Input(Y-IN)
ON/OFF
REST
ACC
BPF
DC
41
Video/Vertical/BUS Ground
14
Red Input
CONTRAST
APC1
BRIGHT
CLAMP
OSD
40
15
Green Input Selected Video Output
VXO
DEMO
39
16
Blue Input Chroma APC1 Filter
TINT
PAL
SW
DDS
38
17
Fast Blanking Input 4.43 MHz Crystal
CONTRAST
BRIGHT
CLAMP
APC2
VCO
18
37
RGB Vcc Clamp Filter
VCC
36
Chroma APC2 Filter
19
Red Output
DRIVE/OUT-OFF
MATRIX
OSD
RGB
SECAM R-Y Input
SW
35
20
Green Output
CLAMP
DC ADS.
(Cr Input)
SW
SECAM B-Y Input
34
21
Blue Output
(Cb Input)
SYNC SW
fsc output or C
FSC/
33
CCD/Horizontal Ground
22
Sync output
1H DELAY
COLOR
CLAMP
32
23
Vertical Output CCD Filter
+
RAMP
VER
VER
SEP
VER
C/D
31
Ramp ALC Filter
24
CCD Vcc
ALC
LPF
VCC
1H
HOR
VCC
30
25
Horizontal/BUS Vcc Clock (4MHz) Outupt
VCC
H
1/256
AFC1
HOR
HOR
VCO
C/D
29
26
Horizontal AFC Filter VCO IREF
SHIFTER
PHASE
AFC2
HOR
OUT
FBP
28
27
Horizontal Output Flyback Pulse Input
-5-
1K
SIF
Data Clock APC 1000p
10p Filter 0.01u
SIF.Out SIF.In
11 12 52 54 53
500K LIM FM Gain Deem-TC
BUS Det AMP 1bit 1bit
to BUS Line Snd Sound 500K FM
Interface Det Amp
BPF BPF Det FM
Amp + De- Out
Amp emph 2
SIF -
IC Block Diagrams
VCO FM.Level
5bit
0.01u
SIF. Sys pre-
PIF VIF AMP 2bit scaller + 9
In1 APC - +
5 2.5V FM Mute FM
IF In
1u
OSC Det Chroma Filter
SAW VIF 1 VIF 2 VIF 3 1 bit
C/D C/D
6 Video
PIF Det Video
In2 Sound Out
Amp 46
Trap
IF To Audio in
IF AGC B/N +
9V Video.Level Ident BUS 51
Drive INV
IC201 LA76818A
10u
3bit
Input VOLUME
30K
Select (ATT) 1 Audio.out
RF 2ndIF IF
RF AGC 4
-6-
Out + AGC AGC AGC
A.SW VOLUME A.Fil.Def
Chroma 1bit
120K
1bit Filter
RF AGC VCO
Delay
6bit A.MUTE VOLUME VOLUME
Buzz D/A 7bit
Canceller 1bit
IF AGC
Def Lock 47
IF VCC 1bit -/4 Det + VCO
8 VIF VCO VCO Filter
+
Counter Ident
0.47u
Alignment
+/4
+ To To Phase
BUS Reset VIF.Sys
- BUS Pulse Detector
2bit
IF (6 Vcc)/7 Vcc
GND VIF Chroma
7 APC VCO Counter
100K
Det AFT
PLL Pull-in SW AFT 10
0.1u
3 50 48 49
100K
APC VCO VCO
0.022u PIF 330 COIL1 COIL2
AGC Filter
0.47u +
VCO.Coil
IC Block Diagrams
IC001 < Audio AMP. > LA42052-E
AMP
30K
300 POWER
PRE
NC NC FILTER GND GND VCC NC
1 2 3 4 5 6 7 8 9 10
INPUT NFL OUT
PUT
IC501 < Vertical Output > LA78040N, TDA9302H
Thermal
Protection
-
AMP
+
Pump
Up
1 2 3 4 5 6 7
Ver. OUTPUT
GND
PUMP UP
Vcc
INVERTING
NON INV.
STAGE Vcc
OUTPUT
INPUT
INPUT
OUT
-7-
Service Adjustments
General
This set has an On-screen Service Menu system includ-
ed in the CPU thar allows remote operation for most of
the service adjustments.
Service Adjustment-1
1. Enter the Service Menu
While pressing the MENU button on the televi-
sion, press the Number Key 2 on the remote control
unit. The Service Menu now appear.
CH
MENU
MENU
S1.00110000 S2.11111000
ADDRESS DATA
02 H-PHA 08
[ Entering the Service Menu ]
Item No. Item Data value
[ Service Mode Display ]
2. Service Adjustments: CHANNEL UP
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
VOLUME +
- button will increase or decrease the data VOLUME -
sequentially.
CHANNEL DOWN
[ Service Adjustment ]
3. Exit from the Service Menu
Press the MENU button to turn off the Service Menu MENU
display.
The data which is set in the service mode is stored
into the memory IC automatically.
[ Exit from the Service Menu ]
-8-
Service Adjustments
On-screen Service Menu
Following table shows the initial values which have been stored in the CPU ROM, and items for the service
adjustments.
No. Item Initial value Range Description
01 RFAGC 06 00~63 RF AGC adjustment
02 H-PHA 08 00~31 H-PHASE adjustment (50Hz)
03 V-POS 32 00~63 Vertical position adjustment (50Hz)
04 V-SIZ 54 00~127 Vertical size adjustment (50Hz)
05 V-SCO 17 00~31 Vertical-S compensation (50Hz)
06 VLIN 15 00~31 Vertical linearity adjustment (50Hz)
07 H-P60 +4 -16~+15 Difference value of H-PHASE adjustment (60Hz)
08 V-P60 0 -32~+31 Difference value of V-POSITION adjustment (60Hz)
09 V-S60 +1 -64~+63 Difference value of V-SIZE adjustment (60Hz)
10 VSC60 0 -16~+15 Difference value of Vertical-S compensation (60Hz)
11 VLI60 +1 -16~+15 Difference value of Vertical linearity adjustment (60Hz)
12 OSDHP 30 01~255 OSD horizontal remark position
13 OSDC 50 00~127 OSD contrast
14 V-SCP 07 00~07 V-SIZE COMP (50Hz)
15 SBIAS 70 00~127 Sub Bias adjustment
16 RBIAS 00 00~255 Red Bias adjustment
17 GBIAS 00 00~255 Green Bias adjustment
18 BBIAS 00 00~255 Blue Bias adjustment
19 RDRIV 63 00~127 Red Drive adjustment
20 GDRIV 07 00~15 Green Drive adjustment
21 BDRIV 63 00~127 Blue Drive adjustment
22 -- -- -- White balance (a lateral line)
23 DRV -- -- Brightness and dark of White balance adjustment
24 B-YD 10 00~15 B-Y DC Level
25 R-YD 10 00~15 R-Y DC Level
26 B-YND 0 -16~+15 Difference value of NTSC B-Y DC Level
27 R-YND 0 -16~+15 Difference value of NTSC R-Y DC Level
28 G-YA 00 00,01 G-Y Angle
29 RBGB 08 00~15 R-Y/B-Y Gain Balance
30 RBAG 08 00~15 R-Y/B-Y Angle
31 G-YAN 00 00,01 Difference value of NTSC G-Y Angle
32 RBGBN 0 -8~+7 Difference value of NTSC R-Y/B-Y Gain Balance
33 RBABN 0 -8~+7 Difference value of NTSC R-Y/B-Y Angle
34 COGV 01 00~03 Coring gain
35 BLK 03 00~03 BLK. STR. Start (W/Defeat)
36 BLKG 03 00~03 BLK. STR. Gain
37 BRTA 00 00, 01 BRT. ABL Defeat
38 BRST 00 00, 01 Mid. Stp. Defeat
39 BRTH 00 00~07 Bright. ABL. Threshold
40 WPL 00 00~03 WPL Ope. Point (W/Defeat)
41 YGAM 00 00~03 Y Gamma Start
42 PORW 00 00, 01 AV Mode Pre/Over SW
43 PORS 02 00~03 AV Mode Pre/Over-shoot adjustment
44 RFCO 0 00~03 Difference Value of RF Corring Gain
45 PORWN 01 00, 01 RF Pre/Over SW
46 PORSN 03 00~03 RF Pre/Over-shoot adjustment
47 TINT 0 -16~+15 Tint
48 SHRF 0 -16~+15 Difference Value of RF Sharpness
49 TEXC 08 00~127 OSD Text Contrast
50 AUFL 00 00, 01 Auto. Fresh
To be continued.
-9-
Service Adjustments
No. Item Initial value Range Description
51 COOP 07 00~07 Colour Killer
52 Y-APF 01 00, 01 Y-APF Select
53 DEEM 00 00, 01 De-emphasis TC
54 V-LVL 04 00~07 Video Level
55 FMLVL 16 00~31 FM Level
56 TTEST 00 00~07 Trap Test
57 IFOM-S 00 00, 01 Over Mod. SW
58 IFMN-S 00 00, 01 Audio Monitor SW, Monitor/FM
59 IFTRPS 01 00, 01 IC Built-in SIF Trap ON/OFF
60 IFMLVL 136 00~255 Video Level Coarse Adjustment & Mod. Operating Dot Setting
61 VBSW 00 00, 01 VBLK SW
62 FBTS 00 00, 01 FBP Blanking SW
63 HBLKL 06 00~07 H-Blanking Control Left
64 HBLKR 04 00~07 H-Blanking Control Right
65 AFCRF 00 00, 01 Adjustment of AFC Gain & Gate (RF)
66 VSURF 00 00, 01 Adjustment of Vertical Sync. Separation Sensitivity (RF)
67 CDMRF 00 00~07 Vertical Count Down Loop Adjustment (RF)
68 AFCAV 00 00, 01 Adjustment of AFC Gain & Gate (AV)
69 VSUAV 00 00, 01 Adjustment of Vertical Sync. Separation Sensitivity (AV)
70 CDMAV 00 00~07 Vertical Count Down Loop Adjustment (AV)
71 HLK-T 00 00, 01 H-lock, V-Det. (RF)
72 HLK-V 00 00, 01 H-lock, V-Det. (AV)
73 VCO-SW 00 00, 01 C. VCO Adjustment SW
74 VCOADJ 03 00~03 C. VCO Adjustment
75 GRAY 00 00, 01 Gray Mode
76 CROSS 00 00~03 Cross Black/White
77 HL-SW 01 00, 01 Half Tone ON/OFF
78 HL-TON 00 00~03 Half Tone Level
79 AVNCON 64 00~127 Contrast (No Signal in AV)
80 AVNBRI 64 00~127 Brightness (No Signal in AV)
81 POMT 12 00~127 Power Mute Time
82 CHMT 12 00~31 Channel Mute Time
83 SYST 03 00~255 System-N
84 RELAY 80 00~255 Power Relay Time
85 CCD 31 00~31 Horizontal Remark Position Compensation Register
86 TVAVTM 00 00~255 AV/TV Mute Time
Important Notice:
Do not attempt to adjust service adjustments