NEC PF32W502 Schematic
Service Manual
Stereo Color Television
CHASSIS : CM-921F
PAL/SECAM-B/G, D/K, I, H SYSTEM
NTSC 4.43/3.58-M SYSTEM
MODEL
:
DSC-3261HA
PF32W502(NEC Model)
NEC Corporation
Jan.2003
S/M No:
TCM921FEFO
1
TABLE OF CONTENTS
1. Specification 2
2. CM-921F EEPROM Presetting DATA 3
3. Circuit block Diagram 5
4. Alignment Instruction 6
5. Trouble Shooting Charts 13
6. Part list(DSC-3261H
) 20
7. Mechanical Exploded View 37
8. Printed Circuit Board 38
9. Schematic Diagram 41
2
1. Specification
1. DSC-3261HA
TV Standard
Color System PAL, SECAM, 4.43NTSC(AV), 3.58NTSC
Sound System B/G, D/K, I, M, H
Rated Voltage AC 110V ~ 240V, 50/60Hz
Power Consumption 148W
Sound Output Power Main 8W X 2
HYPER + CHINA + IVORY COAST
Channel Coverage
VHF L : E2(48.25MHz) ~ S6(147.25MHz)
VHF H : S7(147.25MHz) ~ S36(423.25MHz)
UHF : A37(431.25MHz) ~ E69(855.25MHz)
Tuning System Frequency Synthesizer Tuning System
Channel Indication On-Screen Display
Programme Selection 100 Programmes
Aux. Terminal
AV-input:1, 2(Scart), 3, DVD
AV-output: Scart out, RF out
Remote Control Unit R-50F11(Required two 1.5V batteries type with AA size)
Dimention 890(W) X 573(H) X 560(D)mm
Weight 57 kg
Picture tube 32
Real Flat Type
1. Pre-setted Chanel for Australian
3
2. CM-921F EEPROM Presetting DATA
2 PAL 2CH ( 64.25MHz) for Austlaina Field Chanel
7 PAL 7CH (182.25MHz) for Austlaina Field Chanel
9 PAL 9CH (196.25MHz) for Austlaina Field Chanel
10 PAL 10CH (209.25MHz) for Austlaina Field Chanel
28 PAL 28CH (527.25MHz) for Austlaina Field Chanel
PR.
No.
2. Pre-setted Chanel for Mass-production
30
PAL-B 10CH (623.25MHz)
For white balance
31
PAL-B 2CH ( 48.25MHz)
For Geometry & Nicam stereo check
32
PAL-B 5CH (175.25MHz)
For Geometry & 2-carrier dual check
33
PAL-B 10CH (210.25MHz)
For fuction check
34
PAL-B 4CH ( 62.25MHz)
For fuction check
35
SCM-B 12CH (224.25MHz)
For fuction check
36
PAL-K 18CH (511.25MHz)
For fuction check
37
PAL-I 31CH (551.25MHz)
For fuction check
38
PAL-B 8CH (196.25MHz)
For purity & 2-carrier stereo
39
NTSC 3CH ( 61.25MHz)
For NTSC
40
NTSC 8CH (181.25MHz)
For NTSC Geomery
41
PAL-G 21CH (471.25MHz)
reserved
* presetted channel for mass-production can be changed.
White/Black
RETMA
CROSS HATCH
COLOR BAR
PHILIPS
RETMA
COLOR BAR
RED
PR.
No.
COLOR BAR
RETMA
R,B,W
DEM
400Hz 60% MOD. NICAM St. (L :1KHz, R :0KHz)
1KHz 60% MOD. 2-C Dual (Main:1KHz, Sub:5KHz)
400Hz 60% MOD.
1KHz 80% MOD. NICAM Dual(Main:1KHz, Sub:3KHz)
SWEEP 60%(Standard:1KHz, 268Hz~4.2KHz)
SWEEP 60%(Standard:1KHz, 268Hz~4.2KHz)
400Hz 60% MOD. NICAM St. (L :1KHz, R :0KHz)
5KHz 60% MOD. 2-C St. (L :0KHz, R :5KHz)
1KHz Korean Dual(1KHz,5KHz)
SWEEP (268Hz~4.2KHz)
1KHz 60% MOD.
-
3. Pre-setted DATA for Adjusments
PAL NTSC
S1
-
S2
-
Screen adjustments
S3
-
S4
-
S5
-
V-CENTER +3095 +3927
V-SIZE +151 +138
H-CENTER +86 +87
H-SIZE +1430 +1156
PARABOLA -74 -170
EW TRAPEZ +16 -19
CORNER
H BOW +83 +37
H PARALL
V LINEAR -03 -05
TILT
P H POS
P V POS
P R/G/B Peak
P CONT
P BRIGHT
R/G/B DRIVE
R/G/B BIAS
SUB BRI.
SUB CONT.
BRM
AGC MAIN
AGC SUB
S11
-
S12
-
CONT
For Changing SUB-Brightness Adjust Reference
IBRM
For Changing Screen Adjust Reference
-
-
-
-
-
-
-
Not Use
Shipping
SVC Main Menu
S10
AGC
S6
Geometry
S7
PIP
DSC-3261HA
S9
SUB PICTURE
Screen
Sound Test
Picture Test
Heat-Run
Timer LED test
+40
-18
07
S CORRECT
+7
0
170/170/170
40/40/40
30
8
160/160/160
7
13
13
S8
WHITE
BALANCE
17
07
127
50
340
remarkKEY
Name Details
4
CM-921F EEPROM Presstting DATA
4. CPU option for Function Change
ON with PIP
OFF Without PIP
ON Enable the Digital Sensor
OFF Disable the Digital Sensor
ON for all models, except NEC
OFF Enable the English(NEC)
ON 34"inch
OFF 32"inch
LATIN
EAST
RUSSIA
PERSIAN
ARAB
OFF
ON For PARS Elec
OFF For all Model except PARS
34 Inch
TEXT sel.
English,French,Swedish,Czech,German,Spanish,Italian,Estonian
English,Slovakian,Serbian,Albanian,Polish,Turkian,Rumanian
English,Russian,Bulgaian,Ukrainian,Serbian,Montenegro
English,Farsi
English,Arabic
Teletext Language depends on OSD Language selection
PARS LOGO.
Note : If OSD language & text selec.
is different then Teletext depends on
Text selec.
PIP
Digital EYE
Languge
ON
Wide
OFF
Normal
EXT PORT
5
3. circuit block Diagram
6
4. Alignment Instruction
1. SERVICE REMOCON & EEPROM PRESETTING DATA
1-1. SERVICE REMOCON : R-34SVC
(S/N:48B3034SVC)
1-2. EEPROM PRESETTING DATA
PAL NTSC
S1
-
S2
-
Screen adjustments
S3
-
S4
-
S5
-
V-CENTER +3095 +3927
V-SIZE +151 +138
H-CENTER +86 +87
H-SIZE +1430 +1156
PARABOLA -74 -170
EW TRAPEZ +16 -19
CORNER
H BOW +83 +37
H PARALL
V LINEAR -03 -05
TILT
P H POS
P V POS
P R/G/B Peak
P CONT
P BRIGHT
R/G/B DRIVE
R/G/B BIAS
SUB BRI.
SUB CONT.
BRM
AGC MAIN
AGC SUB
S11
-
S12
-
CONT
For Changing SUB-Brightness Adjust Reference
IBRM
For Changing Screen Adjust Reference
-
-
-
-
-
-
-
Not Use
Shipping
SVC Main Menu
S10
AGC
S6
Geometry
S7
PIP
DSC-3261HA
S9
SUB PICTURE
Screen
Sound Test
Picture Test
Heat-Run
Timer LED test
+40
-18
07
S CORRECT
+7
0
170/170/170
40/40/40
30
8
160/160/160
7
13
13
S8
WHITE
BALANCE
17
07
127
50
340
remarkKEY
Name Details
7
Alignment Instruction
2. The confirmation of Protection circuit
Protection circuit confirmation is omitted in case of mass production in the factory
2-1. Over Current Protecor (OCP) circuit confirmation
2-1-1. Receive PAL RETMA PATTERN(signal of company:2CH., PAL-B) and adjust
STANDARD MODE in PICTURE.
2-1-2. Connect 1MΩ 1/2W between BASE of Q807 and GND, to confirm operating of
PROTECTOR.
2-1-3. The next place, to confirm normal operation when the resister(1MΩ) is removed.”
2-1-4. After Main Power Switch OFF/ON, to confirm normal operation of picture and
sound when turn the set on by remocon.
2-2. High Voltage Protecor (X-ray Protection) circuit confirmation.
2-2-1. Receive PAL RETMA PATTERN(signal of company:2CH., PAL-B), adjust
CONTRAST&BRIGHTNESS to minimun.
2-2-2. Connect 1/6W 15K ohm to R413(1/6W 24K ohm) of POWER PCB in parallel.
Confirm that operation of the SET is SHUT-DOWN condition(High Voltage
Protector).
2-2-3. The next place, to confirm normal operation when the resister(15KΩ) is removed.”
2-2-4. After Main Power Switch OFF/ON, to confirm normal operation of picture and
sound when turn the set on by remocon.
- ON : With PIP Models
- OFF : Without PIP Models
- ON : Enable the Digital Sensor
- OFF : Disable the Digital Sensor
- ON : Enable the all Languge - Multi OSD-Language
- OFF : Enable the English - Only English
- ON : For 34 inch Models Change the Vertical
- OFF : For 32 inch Models Blanking puls width
LATIN : English,French,Swedish,Czech,German,Spanish,Italian,Estonian
EAST : English, Slovakian,Hungarian,Serbian,Albanian,Polish,Turkian,Rumanian
RUSSIA : English,Russian,Bulgaian,Ukrainian,Serbian,Montenegro
PERSIAN : English,Farsi
ARAB : English,Arabic
OFF : Teletext Language depends on OSD Language selection
- ON : Wide
- OFF : Normal
Languge
34 Inch
TEXT sel.
EXT PORT
Note : If OSD language & text selec. is different then Teletext depends on Text selec.
PIP
Digital EYE
- ON : For PARS Elec.
- OFF : For all Model except PARS
PARS LOGO
* Software option for Function Change
8
3-1. Confirm the presetting ‘IBRM’ data of EEPROM according to CRT.
3-1-1. Default Value of IBRM : IBRM(34inch) = 320, IBRM(29inch Flat) = 340
3-2. Press the [S2] KEY of SVC Remocon, Screen-Adjustment OSD will be
displayed.
3-3. Adjust SCREEN V/R of FBT to Screen-OSD-Bar come to center.
(Screen OSD numeral is between 28 and 34)
3-4. To be complated adjustment of screen. Press the [S2] key to escape
screen adjustment mode.
4-1. Receive PAL CROSSHATCH pattern(signal of company:PAL-B 5 CH)
4-2. Adjust with the static focus volume on FBT to get a clear view of horizontal line.
4-3. Adjust with the dynamic focus volume on FBT to get a clear view of vertical line.
4-4. Repeat 4-2, 4-3, to get a clear picture.
5-1. NITSUKI Setting : Set Nitsuki to the ‘Auto Mode’, Reference to the ‘B’, and
System to the ‘PAL’.
5-2. Setting the Normal Stats
5-2-1. Adjust Picture to Normal mode.
5-2-2. Adjust the Gain of Nitsuki to suitability by manual when condition is Normal.
- Adjust the standard illumination take within limit bright of Nitsuki and luminosity of
SET into acount.
- Exhortative Standard illumination, 32inch : High 70Cd/m
2
, LOW BEAM : about
15Cd/m
2
5-2-3. Press the [S8]key of SVC remocon to adjustment of Whit Balance.
X=0.270, Y=0.280
5-2-4. Memorize in Nitsuki after Adjustment of White Balance.
5-3. Adjustment of White Balance
5-3-1. Receive Nitsuki signal.
5-3-2. Adjust Picture to Normal mode.
5-3-3. The Adjustment of High Beam : Adjust R-DRIVE and G-DRIVE to R,G,B BAR
come to center.
5-3-4. The Adjustment of Low Beam : Adjust R-BIAS and G-BIAS to R,G,B BAR come to
center.
5-3-5. Repeat 5-3-3 and 5-3-4 to R,G,B BAR come to within center
+
-
1.
Alignment Instruction
3. The adjustment of SCREEN
4. The adjustment of FOCUS
5. The adjustment of WHITE BALANCE
9
Alignment Instruction
6. The adjustment of AGC
7. The adjustment of GEOMETRY
6-1. Main and Sub AGC DATA are Fixed, but those can be adjusted in case of
need.
6-2. Confirm the Main AGC and Sub AGC by pressing the [S10]key of SVC
remocon.
Main AGC=13, Sub AGC=13
7-1. Press the [S-6]key on the SVC remocon to call up the Geometry mode.
And then, Geometry OSD will be displayed.
7-1-1. All adjustment is base on PAL(50Hz), but it can be base on NTSC(60Hz) in case
of need.
7-1-2. Have regard to change of NTSC(60Hz)-Geometry when Geometry is adjusted in
PAL(50Hz).
7-1-2. Have regard to fixity of PAL(50Hz)-Geometry when Geometry is adjusted in
NTSC(60Hz).
7-2. The adjustment of VERTICAL CENTER
7-2-1. Receive PAL RETMA pattern(signal of company:PAL-B 2CH).
7-2-2. Press the PR up/down Keys( / ) to select V CENTER.
Adjust with Vol Up/Down ( / ) keys so that the center mark of the CRT may be
located on the horizontal line in the middle of the pattern. In case of no center
mark, adjust with Vol Up/Down ( / ) keys to obtain a vertically symmetrical
pattern.
7-3. The adjustment of VERTICAL SIZE
7-3-1. Receive PAL RETMA pattern(signal of company:PAL-B 2CH).
7-3-2. Press the PR up/down Keys ( / ) to select V-SIZE.
Adjust with Vol Up/Down ( / ) keys sothat the upper and the lower of RETMA
pattern may be located at the boundaries of the screen.
7-4. The adjustment of HORIZONTAL CENTER
7-4-1. Receive PAL RETMA pattern(signal of company:PAL-B 2CH).
7-4-2. Press the PR up/down Keys ( / ) to select V-SIZE.
Referring to the both side scales, adjust with Vol Up/Down ( / ) keys so that
RETMA pattern may be symmetrical.
7-5. The adjustment of HORIZONTAL SIZE
7-5-1. Receive PAL RETMA pattern(signal of company:PAL-B 2CH).
7-5-2. Press the PR up/down Keys ( / ) to select V-SIZE.
Referring to the both side scale, adjust with Vol Up/Down ( / ) keys.
10
Alignment Instruction
7-6. The adjustment of PINCUSHION
7-6-1. Receive PAL CROSSHATCH pattern(signal of company:PAL-B 5CH).
7-6-2. Press the PR up/down Keys ( / ) to select PARAVOLRA.
Referring to the 2th line of both side, adjust with Vol Up/Down ( / ) keys.
7-6-3. The other adjustment list of Pincushion
- ADJUSTMENT LIST : EW TRAPEZ, CORNER, H-BOW, H-PARALELL
- Fix adjustments of related Pincution(except EW PARA.) after EEPROM
presetting, but those can be adjusted in case of need.
11
Alignment Instruction
8. THE ADJUSTMENT OF SUB-PICTURE
(SUB-BRIGHT, SUB-CONTRAST)
7-7. The adjustment of Vertical Linearity
7-7-1. Receive PAL CROSSHATCH pattern(signal of company:PAL-B 5CH).
7-7-2. Fix adjustment of Vertical Linearity after EEPROM presetting, but it can be
adjusted in case of need.
7-7-3. Press the PR up/down Keys ( / ) to select V LINEAR.
Adjust Vertical Linearity with Vol Up/Down ( / ) keys.
7-8. The adjustment of VERTICAL S-Correction
7-8-1. Receive PAL CROSSHATCH pattern(signal of company:PAL-B 5CH).
7-8-2. Fix adjustment of Vertical S-Correction after EEPROM DATA presetting, but it can
be adjusted in case of need.
7-8-3. Press the PR up/down Keys ( / ) to select S CORRECT.
Adjust S-Corrction with Vol Up/Down ( / ) keys.
8-1. Receive PAL RETMA PATTERN(signal of company:2CH., PAL-B)
8-2. Press the [S9] KEY of SVC Remocon, SUB PICTURE-Adjustment OSD wil
be displayed.
8-3. The adjustment of SUB-BRIGHT
8-3-1. Press the PR up/down Keys ( / ) to select SUB-BRIGHT in SUB-PICTURE
MENU.
Adjust SUB-BRIGHT with Vol Up/Down ( / ) keys.
8-3-2. Adjust With BRM(Default Value=127) When SUB-BRIGHT is lacking in margin of
adjustment.
8-3-3. Standard of adjustment : Adjust till instant of 1, 2th cordon disappear in RETMA
CONTRAST CHART(signal of company).
8-3-4. When Sub-Picture mode was exited after SUB’s adjustment, Normal vlaue is
brighter(about 18%) than adjustment-point(about 10%) of adjustment-mode
because BRIGHT is set to rise 2~3 step.
7-9. The adjustment of TILT
7-9-1. Receive PAL RETMA pattern(signal of company:PAL-B 5CH).
7-9-2. Press the PR up/down Keys ( / ) to select TILT.
7-9-3. Adjust TILT with Vol Up/Down ( / ) keys.
12
Alignment Instruction
9. THE ADJUSTMENT OF PIP
8-4. The adjustment of SUB-CONTRAST
8-4-1. Fix adjustment of SUB-CONTRAST after EEPROM DATA presetting.
8-4-2. Reference (Default value) : 07
9-1. Receive PAL RETMA pattern(signal of company:PAL-B 2CH) and Color
Bar.
9-2. Press the [S7] KEY of SVC Remocon, PIP-Adjustment OSD wil be
displayed.
9-3. Fix adjustment of PIP after EEPROM DATA presetting, but it can be
adjusted in case of need.
9-4. Adjust PIP after GEOMETRY, WHITE BALANCE and SUB-BRIGHT are
adjusted.
9-5. List of adjustment
1) PIP H POSITON : Adjustment of H-position Sub-Picture,
Should use caution in adjustment because horizontal position of
2PIC & Search-Picture(3PIC,9PIC,12PIC) are changed.
(Reference : Presetting Value of EEPROM = 30)
2) PIP V POSITON : Adjustment of V-position of Sub-Picture,
Should use caution in adjustment because vertical position of 2PIC
& Search-Picture(3PIC,9PIC,12PIC) are changed.
(Reference : Presetting Value of EEPROM = 08)
3) PIP R/G/G Peak : Adjustment of Gain of PIP IC R,G,B Output
(Reference : Presetting Value of EEPROM = 160)
4) CONTRAST : Adjustment of AC Gain(Contrast) of PIP IC RGB Output
(Reference : Presetting Value of EEPROM = 07)
5) P BRIGHT : Adjustment of DC Level(SUB BRIGHT) of PIP IC RGB Output
(Reference : Presetting Value of EEPROM = 00)
13
1. NO RASTER
5. Trouble Shooting Charts
Check
Standby 5.5V &
Main B+(132V) line
ABNORMAL
ABNORMAL
ABNORMAL
NORMAL
NORMAL
VOLTAGE
ABNORMAL
Check horizental dirve
Pulse at 24th pin of I701
Check/Replace I701
Check/Replace
Q401, T401, Q402
D402, D831
Check/Replace
Voltage of C893
Check
secondary voltage,
stand-by 5V line,
Check/Replace
I805, R835, S/B line
Check/Replace
F801 Fuse(6.3A 250V)
Check/Replace
D801, R805, R803
Check/Replace
I801(STR-6709),
Peripheral components
Check/Replace
I802(KP-1010C)
Check voltage at 64th
pin of I701(normal:0V)
Open 64th pin of I701
---> OK(set power on)
Peripheral components
of Check OCP, OVP line
Check horizontal Vcc,
R555 at 24th pin of I701,
X501(20.25),”
signal at 59.60th pin of
I701(SCL, SDA)
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