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PDF DS20424 Data sheet ( Hoja de datos )
| Número de pieza | DS20424 | |
| Descripción | Remote Control Color TV Service Manual | |
| Fabricantes | Sanyo | |
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Hay una vista previa y un enlace de descarga de DS20424 (archivo pdf) en la parte inferior de esta página. Total 26 Páginas | ||
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SERVICE MANUAL
AS
Remote Control Color
Television
FILE NO.
DS20424 (U.S.A.)
(CANADA)
ORIGINAL VERSION
Chassis No. 20424-00
AS
Contents
Safety Instructions . . . . . . . . . . . . . . . . . . 2
Service Adjustments . . . . . . . . . . . . . 3 - 10
Service Hints . . . . . . . . . . . . . . . . . . . . . . 11
Mechanical Disassemblies. . . . . . . . . . . 12
Chassis Electrical Parts List . . . . . . 13 - 19
Cabinet Parts List . . . . . . . . . . . . . . . . . . 20
Component and Test Point
Locations . . . . . . . . . . . . . . . . . . . 21 - 24
Schematic Insert . . . . . . . . . . . . . . . 25 - 32
Schematic Notes . . . . . . . . . . . . . . . . . 25
Pin Layouts . . . . . . . . . . . . . . . . . . . . . 25
Capacitor and Resistor Codes . . . . . . 25
Block Diagram . . . . . . . . . . . . . . . 26 - 27
Voltage Charts . . . . . . . . . . . . . . . 26 - 27
Waveforms. . . . . . . . . . . . . . . . . . . . . . 28
Schematic Diagrams . . . . . . . . . . 29 - 32
DS20424, G8TGM, PRODUCT CODE 111367886
NOTE: Match the Chassis No. on
the unit’s back cover with
the Chassis No. in the
Service Manual.
If the Original Version
Service Manual Chassis
No. does not match the
unit’s, additional Service
Literature is required. You
must refer to “Notices” to the
Original Service Manual
prior to servicing the unit.
Specifications
Power Rating . . . . . . . . . . . . . . . . . . . . . 120V, 60Hz
65W (Avg), 1.4A (Max)
Antenna Input Impedance . . . . . . . . . . . . . . . . . 75Ω
UHF/VHF/CATV
Receiving Channel . . . . . . . . . . . . . . . . 2 - 13 (VHF),
14 - 69 (UHF),
01, 14-94, 95-125 (CATV)
Remote Ready . . . . . . . . . . 24 Key Remote Control
Sound Output . . . . . . . . . . . . . . . . . . . . . . 1.0 W/CH
Intermediate Frequency
Picture IF Carrier . . . . . . . . . . . . . . . . . . 45.75MHz
Sound IF Carrier . . . . . . . . . . . . . . . . . . 41.25MHz
Color Sub Carrier . . . . . . . . . . . . . . . . . 42.17MHz
Picture Tube . . . . . . . . . . . . . . . . . A51QDX993X001
Semiconductors
Integrated Circuits. . . . . . . . . . . . . . . . . . . . . . . . 8
Transistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Except within Tuner and RC Pre-Amp.
Cabinet Dimensions
Width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 588mm
Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . 466mm
Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 493mm
REFERENCE No. SM780099
1 page  
Table 1. ON-SCREEN SERVICE MENU
When IC802 (EEPROM) is replaced, check the bus data to confirm they are the same as below. The shaded menu should be
checked and be set up or readjusted according to the procedures described in the following pages. Initial Setup Data marked
with an * should be changed from Initial Reference Data. (See pages 3 and 4 for Initial Bus Data Setup.)
No.
TITLE
INITIAL REFERENCE INITIAL SETUP INITIAL SETUP
DATA HEX
DATA HEX DATA BINARY
3B SCN
0F 18* 00011000
3C SCO
28 17* 00010111
3D STI
28 20* 00100000
3E SB
18 18 00011000
3F SSH
00 00 00000000
40 AFC6HFR 90 90 10010000
41 HP
12 11* 00010001
42 VS
60 55* 01010101
43 VSP7VKI6VDC
07
18* 00011000
44 HBL5VLN 26 29* 00101001
45 HBR5VST 41 42* 01000010
46 VSC
0A 0A 00001010
47 VTS6VC3CDM
28
28 00101000
48 FBS4GRY2CRS
10
10 00010000
49 RB
00 00 00000000
4A GB
00 00 00000000
4B BB
00 00 00000000
4C RD
40 40 01000000
4D GD
08 08 00001000
4E BD
40 40 01000000
4F SBI
40 30* 00110000
50 ↓
↓ ↓↓
51 ↓
↓ ↓↓
52 OSD
03 03 00000011
53 ABL5MSD4RTS3BAT
14
1C* 00011100
54 CRG
12 12 00010010
55 STR4FLS 31 31 00110001
56 YAP6PRE4OVR2WP
01
02* 00000010
57 YGM6DCR4BSS2BSG
04
84* 10000100
58 CBT3
80 80 10000000
59 ↓
↓ ↓↓
5A ↓
↓ ↓↓
5B AF7CBP5
20 A0* 10100000
5C CKO
07 04 00000100
5D RYA
08 08 00001000
5E CBO4CRO
98
98 10011000
5F GYA3
00 00 00000000
60 ↓
↓ ↓↓
61 FMM5
00 00 00000000
62 IAS7STS6RAD
60
60 01100000
63 VIF5VL
10 10 00010000
64 VCO1
80 80 10000000
65 OMS6OML
20
20 00100000
66 ↓
↓ ↓↓
67 VMD6VMG3SSN
24
22* 00100010
68 ↓
↓ ↓↓
69 EWD
2E 2E 00101110
6A EWA
12 12 00010010
6B EWT
23 23 00100011
FUNCTION
Sub Contrast (4~0)
Sub Color (5~0)
Sub Tint (4~0)
Sub Bright (5~0)
Sub Sharpness (4~0)
AFC(6) Horizontal Frequency (5~0)
Horizontal Phase (4~0)
Vertical Size
V Sync Sep (7) V Kill (6) V DC (5~0)
H Blanking L (6~5) V. Linearity (4~0)
H Blanking R (6~5 V Shift (3~0)
Vertical S Correction (4~0)
V Test (7~6) V Compression (5~3)Count Down Mode (0)
VNS (7) V Blk (6~5) FBP Blk (4) Gray Mode (2) CRS (1~0)
Red Bias (7~0)
Green Bias (7~0)
Blue Bias (7~0)
Red Drive (6~0)
Green Drive (3~0)
Blue Drive (6~0)
Sub Bias (6~0)
Not Used
Not Used
On Screen Display Contrast (1~0)
ABL Defeat (5) MID Stop (4) RGB Temp (3) ABL Thresh (2~0)
Coring Gain (7~6)
S Trap Test (6~4) Y/C Filter Mode (2~0)
Y APF (6) Pre Shoot (5~4) Over Shoot (3~2) White Peak (1~0)
Y Gam (7~6) DC Res (5~4) B Strk Start (3~2) B Strk Gain (1~0)
Cb Trap (7~3)
Not Used
Not Used
Auto Flesh (7) C Bypass (5)
Color Killer (2~0)
R-Y/B-Y Angle (3~0)
Cb DC Offset (7~4) Cr DC Offset (3~0)
G-Y Angle (3)
Not Used
FM Mute (5)
IF AGC (7) S Trap SW (6) RF AGC (5~0)
VIF System SW (5) Video Level (4~2)
VCO Freq (7~1)
Over Mod SW (6) Over Mod Level (5~2)
Not Used
VM Delay (7~6) VM Gain (5~3) Sync Sep Sens(2~0)
Not Used
E/W DC (5~0)
E/W Amp (5~0)
E/W Tilt (5~0)
—5—
5 Page 
SERVICE HINTS
POWER FAILURE DETECTOR
This unit is equipped with a Power Failure Detector function included in the CPU which checks for an abnormal condition in
the chassis power supplies, including the power supply derived from the Horizontal Output Transformer.
If, while the power is on, a failure is caused by any of the following that results in a low voltage supply, the CPU will turn the
unit off in 1.5 seconds to prevent further damage:
• Failure within the power supply circuits.
• A short circuit in the load side from the supply.
• Stoppage of the Horizontal Output Oscillator caused by the X Radiation protection Hold-Down Circuit.
If, while the power is off, the power is switched on and any of these failures remains uncorrected, the CPU will shut off the
power within three seconds.
Check the following if the unit is turned off by the power failure detector.
1. Disconnect the AC power cord (120V AC line) for at least 10 seconds.
2. Connect a DC Voltmeter to the following TEST POINTS.
TJ6
D002 Cathode
D429 Cathode
5V
15V
5V
3. Press the Power key and check for the proper voltage supplies.
4. If any of these voltages is low, the power failure detector should turn the unit off within three seconds.
5. Check all circuits listed above.
Note: This unit is equipped with a Power Surge Protection feature included in the CPU. If power failure occurs three times
within 15 minutes, the CPU will automatically stop functioning to help prevent secondary damage. (TV will not turn on
by pressing the power key.) To reset the operating programs within the CPU, disconnect the AC power cord for at least
10 seconds.
— 11 —
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet DS20424.PDF ] | |
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