Page 1
SHARP SERVICE MANUAL
S260525LC156/
_
COLOR TELEVISION SIGMA 9100 CHASSIS
Chassis No. 25L3
MODEL 25LC156
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original conditions and only parts identical to those specified should be used.
| CONTENTS | |
|---|---|
| ELECTRICAL SPECIFICATIONS | 3 |
| BLOCK DIAGRAM | 4 |
| INSTALLATION AND SERVICE INSTRUCTIONS | 5 |
| CHASSIS LAYOUT | 6 |
| PRINTED WIRING BOARD ASSEMBLIES | 7 |
| SCHEMATIC DIAGRAMS | 9 |
| REPLACEMENT PARTS LIST | 16 |
| PACKING OF THE SET | 20 |
CONTENTS
SHARP ELECTRONICS CORPORATION
| Executive Office: | Sharp Plaza, | Mahwah, | New Jersey | 07430 | (201) 529-8200 |
|---|---|---|---|---|---|
| Regional Offices & Distribution Centers: | Sharp Plaza, | Mahwah, | New Jersey | 07430 | (201) 529-8200 |
| 20600 S. Alameda St., | Carson, | California | 90810 | (213) 637-9488 | |
| 430 E. Plainfield Rd., | Countryside, | Illinois | 60525 | (312) 482-9292 | |
| U.S. | Subsidiary of Sharp Corp | poration Osaka | , Japan | ||
| Parts Centers: | P.O. Box 405 | Mahwah, | New Jersey | 07430 | (201) 529-8200 |
| 20600 S. Alameda St., | Carson, | California | 90810 | (213) 637-9488 | |
| 430 E. Plainfield Rd., | Countryside | Illinois | 60525 | (312) 482-9292 | |
Page 2
INSTALLATION AND SERVICE INSTRUCTIONS
-
Note: (1) When performing any adjustments to resistor controls and transformers use non-metallic screwdriver or TV alignment tools.
- (2) Before performing adjustment, TV set must be on at least 15 minutes.
CIRCUIT PROTECTION
The entire receiver is protected by a 4.0A fuse (F2701), mounted on PWB-C, wired into one side of the AC line input.
X-RADIATION PROTECTOR CIRCUIT TEST
After service has been performed on the horizontal deflection system, high voltage system, or +B system, the X-Radiation protector circuit must be tested for proper operation as follows:
- 1. Apply 120V AC using a variable transformer for accurate input voltage.
- 2. Allow for warm up and adjust all customer controls for normal picture and sound.
- 3. Check the voltage of test point TP603 (It's voltage should be about 17.7V DC.)
- 4. Connect the cathode of diode D2503 with TP603 through a 6.8 k ohm, 1/2 w resistor. When these points are connected, the operation of horizontal oscillator stops.
- To start operation, remove the resistor and touch the TP601 to chassis ground with a short clip lead. (Remove short clip lead as soon as the set operates again with a normal picture.) Connect TP2601 to chassis ground and see that the operation of the horizontal oscillator stops.
- 6. If the operation of the horizontal osc. does not stop in steps 4 and 5, the circuit must be repaired before the set is returned to the customer.
HIGH VOLTAGE CHECK
High voltage is not adjustable but must be checked to verify that the receiver is operating within safe and efficient design limitations as specified checks should be as follows:
- 1. Connect an accurate high voltage meter to the CRT anode.
- 2. Operate receiver for at least 15 minutes at 120V AC line voltage, with strong air signal or a properly tuned test signal.
- 3. Set SW851 on PWB-B to "off" (center) position. Note that loss of luminance will occur.
- 4. Rotate Screen control (on T2602) to minimum (CCW) end of its rotation.
- 5. The reading should be approximately 28kV at zero beam.
If a correct reading cannot be obtained, check circuitry for malfunctioning components. Upon completion of voltage check, readjust screen control for proper operation and set SW851 to "on" position.
Page 3
INSTALLATION AND SERVICE INSTRUCTIONS (Continued)
Field Adjustment
RF. AGC. Adjustment
- (1) Turn channel selector to a local station.
- (2) Place AFT switch in "off" position.
- (3) Turn RF AGC control (R212) fully clockwise until snow and/or noise appear in picture, then slowly turn control counter-clockwise until snow and/or noise disappear.
- (4) Check all other channels.
Sound
- (1) Turn channel selector to a local station.
- (2) Place AFT switch in "off" position.
- (3) Adjust volume control to mid-position.
- (4) Adjust sound det. coil (L301) to obtain good clear sound.
Sub-Bright Control
- (1) Turn channel selector to a local station.
- (2) Turn picture control (R440) fully clockwise and set bright control (R435) at the center position.
- (3) Turn sub-bright control (R436) to obtain normal brightness of the picture.
Vertical Size and Linearity Adjustment
- (1) Turn channel selector to a local station.
- (2) Check brightness and picture controls for a normal picture.
(3) Adjust vertical size control (R508) for approximately one-half inch over-scan at top and bottom of picture screen, and linearity control (R507) for the best vertical linearity.
Focus Adjustment
- (1) Turn channel selector to a local station.
- (2) Set brightness and picture control at a normal viewing level.
- (3) Adjust focus control (part of T2602) for sharp scanning lines and/or sharp picture.
- NOTE 1: All field adjustments mentioned can be performed without test equipment.
- NOTE 2: The AFT SW is employed for the following purpose. When connecting a VCR or video game equipment to the antenna terminals of this TV and when the RF output frequency of these video equipments deviates from the normal TV channel frequency, this freqency deviation can be corrected by setting the AFT SW to the "ON" position. Usually the AFT SW should be set the "ON" position.
- NOTE 3: After servising the set, check that the aging SW1502 is set at "off" position. This aging SW is to be used only for the factory inspection: at "on" position, it won't allow the set to be turned off.
Page 4
BLOCK DIAGRAM
25LC156
Page 5
REPLACEMENT PARTS LIST
SAFETY NOTE — Components marked with a (△) have special characteristics important to safety. Before replacing any these components, read cafully the SAFETY NOTICE on page 3 of the Service Manual. Components marked with an (▲) are related to X-Ray Protection circuit. HOW TO ORDER REPLACEMENT PARTS — To have your order filled promptly and correctly, plase furnish the following information: 1. MODEL NO. 2. PART NO. 3. DESCRIPTION
Contact your nearest SHARP Parts Distributor to order.
For location of SHARP Parts Distributor, Please call Toll-Free; 800-447-4700 (In Hawaii and Alaska, please contact local SHARP dealer). * MARK: SPARE PARTS-DELIVERY SECTION
| Ref. No. | Part No. | * | Description | Ref. No. | Part No. | * | Description |
|---|---|---|---|---|---|---|---|
| PICTURE | IBE | 409 | |||||
| FICTORE |
400,
601. |
||||||
| ▲ ★ V101 | VBA63ABG25X-S | м | CBT | 1402 | |||
| or | Q501 | VS2SC1959Y/1E | J | 2SC1959(Y) | |||
| VBA63AAM08X-S | м | Q701 | VS2SC2236Y/ - 1 | J | 2SC2236(Y) | ||
| ▲▲ DY601 | RCiLH0029MEZZ | м | Deflection Yoke | Q1501, | VS2SC1815GW-1 | J | 2SC1815(GR) |
| ∆ L702 | RCILG0007MEZZ | м | ADG Coil | 1502 | |||
| Q1601, | VS2SC1983//-2 | J | 2SC1983 | ||||
| 1602 | |||||||
| PR | INTED WIRING BC | )Af | i | ||||
| :IVI | |||||||
| PWB-A | DUNTK4393DE00 | _ | Mother Unit | DIOD | ES | ||
| PWB-B | DUNTK4294DE03 | CRT Unit | |||||
| PWB-C | DUNTK4394DE00 | Power Unit | D403, | VHD1SS119//-1 | J | 1SS119 | |
| 405, | |||||||
| 406, | |||||||
| PWB-A DUNT | К4 | 393DE00 | 407, | ||||
| 408, | |||||||
| TUNER AND AS | SE | MBLY UNIT | 608. | ||||
| PARTS HERE SHOWN A | SUPPLIED AS AN ASSEMBLY | 801, | |||||
| BUY | NOT INDEPENDENTLY. | 802, | |||||
| Γ | 1001, | ||||||
| VTUVTS-7UKPY/ | J | 110 Channel Varactor Tuner | 1003, | ł | |||
| D3001 | RUNTK0111CEZZ | J | Channel Indication Unit | 1005, | |||
| 1006, | |||||||
| L | 1009, | ||||||
| INTEGRATED | CI | RCUITS | 1010, | ||||
| 1013, | |||||||
| IC 302 | RH- i X0054CEZZ | J | 1014, | ||||
| RH- I X0600CEZZ | J | 1028, | |||||
| IC1001 | 1030, | ||||||
| KH-1X0260CE22 | J | 1101 | |||||
| 101401 | ľ | ļ | |||||
| 1108, | |||||||
| 1301, | |||||||
| TRANSI | STO | RS | 1305, | ||||
| ······ | т. — | 1306, | |||||
| Q201 | VS2SC1906//1E | J | 2SC1906 | 1404, | |||
| Q401, | VS2SC1815YW-1 | J | 2SC1815(Y) | 1405, | |||
| 402, | 1601, | ||||||
| 403, | 1604, | ١. | 101240 | ||||
| 410, | D404 | BH- DX0110CE77 | $52776 | ||||
| 802, | 606 | Ĩ | |||||
| 1303, | D602. | RH- EX0116GEZZ | J | Zener Diode RD6.8EB2 | |||
| VC2CC101EVW 1 | 2501815(X) | 1032 | |||||
| U406 | V323C18151W-1 | J | ▲ ∆ D604 | RH-EX0112CEZZ | J | Zener Diode | |
| VS2SC454-C/1E | 2SC454(C) | D605 | RH- DX0101CEZZ | J | |||
| 0407 | VS2SA854-0/1F | Ĵ | 2SC854(Q) | D607 | RH-EX0200CEZZ | J | Zener Diode |
| or | 1 | D702 | RH-EX0023GEZZ | J | Zener Diode | ||
| VS2SA562Tő/-1 | J | 2SA562T(õ) | D1002 | RH-EX0103CEZZ | IJ | Zener Diode | |
| Q408, | VS2SA1015Y/1E | J | 2SA1015(Y) | ||||
| 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Page 6
| 2 | Ę |
|---|---|
| Ref. No. | Part No. | * | Description | Ref. No. | Part No. | • | Desc | cription | ||
|---|---|---|---|---|---|---|---|---|---|---|
| D1015 | RH- EX0217CEZZ | J | Zener Diode RD15EB | CONTROLS | ||||||
|
|
1018 D1304, |
RH- EX0131CEZZ | L | Zener Diode RD5.1E |
R212
R214 |
RVR-B4568CEZZ
RVR-B5269CEZZ |
L
L |
10K (B)
100K (B |
RF
) AF |
AGC
T |
|
|
1406
D1401 |
RH- DX0130CEZZ | J |
R435
436, |
RVR-B5297CEZZ | J | 10K(B) |
Brig
Sut |
ghtness
b Brightness |
||
| D1402 | RH- EX0038CEZZ | J | Zener Diode | 440, | Pict | ture | ||||
| D1602 | RH-EX0047CEZZ | J | Zener Diode RD12EB | 816, | Col | lor | ||||
| D1603, | RH- DX0200CEZZ | J |
820
8507 |
DVD MT200TATT | |. | 01/101 | Tin | t | ||
| D1605 | RH- EX0021TAZZ | J | Zener Diode | R508 |
RVR- M72021A22
RVR- M7199TAZZ |
J |
2K (B)
500(B) |
Ver
Ver |
rtical Linearity
rtical Size |
|
| PACKAGED | CIF | RCUITS | САРАС | ПТО | RS | |||||
| X801 | BCBSB0005CEZZ | Crystal – 3 58MHz | C212. | VCEAAA1CW337M | 330 | 16V | Electrolytic | |||
| X1001 | RCRSB0013CEZZ | Ĵ | Crystal – 4.5MHz | 324, | 101 | Liectionytic | ||||
| D1019 | RMPTJ0028CEZZ | J | 15V x 7 Zener Diode | 327, | ||||||
| RR1001 | RMPTC0128CEZZ | J | 22K x 7 Resistor | 420, | ||||||
| RR1002, | RMPTC0135CEZZ | J | 22K x 4 Resistor | 701 | 1 | |||||
| 1003 | C326, | VCEAAA1CW477M | J | 470 | 16V | Electrolytic | ||||
| 433, | ||||||||||
| /02, | ||||||||||
| l | 1 | - 703, | ||||||||
| COI | LS | 1004, | ||||||||
| 1 202 | Ι. | 1102. | ||||||||
| L202 | VP - MK2R2K0000 | J | 1405 | |||||||
| 1203 | VP- BEB56K0000 | 0.47µn | C304 | VCEAAA1CW227M | J | 220 | 16V | Electrolytic | ||
| 1 205 | VP - RF 180K0000 | 18 0 H | C331, | VCE9AA1HW105M | J | 1 | 50V | Electrolytic | ||
| L206 | RCi Li 0448CEZZ | Ĵ | (NP) | |||||||
| L207 | RCi Li 0392CEZZ | J | AFT | 602 | ||||||
| L301 | RCi Li 0374CEZZ | J | Sound Detection | C427 | VCCSPA2HL 470K | 1 | 47p | 500V | Ceramic | |
| L401 | RCi LP0094CEZZ | J | 180MHz Band Pass Filter | C432 | VCE9AA1CW476M | J | 47 | 16V | Electrolytic | |
| L402, | VP - MK100K0000 | J | 10μΗ | 0500 | 1. | (NP) | ||||
| 403, | C605 | VCSATATVE225K | J | 2.2 | 35V | Tantalum | ||||
| 1001, | C613 | VCCSPA2HL 101K | 0.47 . | 35V | Lantalum | |||||
| 1101, | C808 | VCE9AA1HW225M | J | 22 I | 5000 | Electrolytic | ||||
| 1501 | RC: 1 702720F77 | Delevilie | C1005 | VCEAAA1AW107M | J. | 100 | 10V | Electrolytic | ||
|
L405
L406 |
VP- 6E820K0000 | C1504, | VCEAAA1CW108M | J | 1000 | 16V | Electrolytic | |||
| L601 | VP - MK 270K0000 | J | 27µH | 1615 | , | |||||
| L801 | RCi L V0132CEZZ | J | Band Pass Filter | C1605, | VCEAAH1VW108M | J | 1000 3 | 35V | Electrolytic | |
| L802 | VP - MK 2 2 0 K 0 | J | 22µH | 1612 | ||||||
| L1401 | VP - RF 100K0000 | J | 10μH | ļ | ||||||
| DECICT | e | |||||||||
| CERAMIC | FILT | TERS | A 8609 |
-
12K ch- |
1/0 | W. Carbon | ||||
| CF301 | REILCO001CE77 | ٦ | Ceramic Filter Sound Take-off | ▲▲ R610 | VRD-RA2BE822J | J | 8.2K ohr |
יס/ה
1/8יn 1/8 |
W Carbon | |
| CF401 | RFiLC0013CEZZ | Ĵ | Ceramic Filter 4.5MHz Tran | ▲ R702 | VRS-VV3LB220J | J | 22 ohm | ЗW | Oxide Film | |
| CF601 | RFILA0005CEZZ | L | Ceramic Filter 32FH Oscillation | ▲ R1104 | VRS-VV3AB221J | J | 220 ohm | 1W | Oxide Film | |
| SF201 | RFiLC0042CEZZ | J | Surface Acoustic Wave Filter | A H1402 | VRS-VV3DB273J | J | 27K ohm | 2W | Oxide Film | |
| A R1403 | VRS- VV308223J | 22K ohm | 1 2W | Uxide Film | ||||||
| R1601 | VRS- VV3D81011 | 100 obm |
1 1 VV
1 2\\\/ |
Oxide Film | ľ | |||||
| TRANSFO | RMI | ERS | . 2 | |||||||
| ∆ T1601 | RTRNP0342CEZZ | J | Power Transformers | |||||||
| ∆ T1602 | RTRNP0339CEZZ | J | Power Transformers | ŀ | ||||||
| ŀ | ||||||||||
Page 7
| Ref. No. | Part No. | * | Description | Ref. No. | Part No. | * | Description | ||
|---|---|---|---|---|---|---|---|---|---|
| SWITC | HE | S | PWB-C DUNTK4394DE00 | ||||||
| SW1001 | QSW-P0264CEZZ | J | TV/CATV Switch | ||||||
|
SW1004,
1005, 1006, 1007, 1008 |
QSW-K0025CEZZ | J |
Channel Down Switch,
Channel Up Switch, Volume Down Switch, Volume Up Switch, Power Switch |
▲☆ IC2601
▲☆ IC2701 |
RH- FX0003CEZZ
RH- i Z0027CEZZ |
1
J |
|||
|
SW1009,
1502 |
SW1009, RVR-B5297CEZZ J AFT Switch,
1502 Aging Switch |
TRANSIS |
г
ТО |
I
IRS |
|||||
| Q2501, | VS2SC3299Y/ - 1 | J | 2SC3299(Y) | ||||||
| MISCELLANEC | JUS | PARTS | 2502 | VS2SD1267-P1E | J | 2SD1267 | |||
|
FB301,
601 |
RBLN-0036CEZZ | J | Ferrit Bead |
− Q2601
▲ Q2602 Q2603 |
VS2SC2655Y/ - 1
VS2SD871/ / / - 1 VS2SC1815GW- 1 |
1
1 1 |
2SC2655(Y)
2SD871 2SC1815(GR) |
||
| RRMCU0153CEZZ | J | Remote Control Receiver | |||||||
| DIOD | ES | ||||||||
| PWB-B DUNT | Κ4 | 294DE03 | T. | ||||||
| TRANSIS | этс | DRS |
D2501,
2502 |
RH-DX0123CEZZ | J | ||||
|
Q851,
852, |
VS2SC1514//-1 | J | 2SC1514 |
▲ D2503
▲▲ D2601, 2701 |
RH- DX0105TAZZ
VHD1SS119//-1 |
J |
TVR1J
1SS119 |
||
| 853 |
D2602,
2707 |
RH- DX0126CEZZ | |||||||
| CO | L | RH-DX0154CEZZ | J | 1S1887A | |||||
| - |
- ▲ 2704,
▲ 2705 |
||||||||
| L851 | VP - LK271K0000 | J | 270µH |
▲ D2706
▲ D2708 |
RH- EX0084CEZZ
RH- DX0202CEZZ |
J | 05Z72, Zener Diode | ||
| CONTR | OL | S |
▲ D2709
▲▲ SCR2701 |
VHS3S4M//LB1E | J | Silicon Controlled Rectifier | |||
|
R854,
862, 870 R860, |
RVR- B4733CEZZ
RVR- B4726CEZZ |
J |
10K(B) Red Bias
Green Bias Blue Bias 200(B) Green Drive |
or
VHSCR 3 AMZ 8L B 1 |
J | ||||
| 869 | Blue Drive | PACKAGED | CI | RCUIT | |||||
| САРАС | пс | )8 | ▲ POR2701 | RMPTP0025CEZZ | J | Positive Coefficient | |||
| C856 | RC- KZ007JCEZZ | J | 0.01 1.4kV Ceramic | Thermistor | |||||
| COI | LS | ||||||||
| RESIST |
TOR
T |
IS
T |
DC: 1 702120577 | Ι. | |||||
|
∆ R856,
∆ 863, ∆ 866 |
VRS-VV3DB153J | J | 15k 2W Oxide Film | ▲ L2701 |
RCi LF0087CEZZ
or RCi LF0090CEZZ |
L
L |
Line Filter | ||
|
Сн
Сн |
- | ||||||||
| TRANSFO |
,
DRN |
/
NERS |
|||||||
| SW851 | QSW- B0015CEZZ | J | Service Switch (Cut off) | A T2601 | BTBN701680577 | Horizontal Drive | |||
| MISCELLANE | IS PART | ▲ T2602 | RTRNF1601CEZZ | J |
Horizontal Output (W/Focus,
Screen Controls and H.V. |
||||
| S851 | QS ô CV0913CEZZ | J | Socket – CRT | Rectifier) | |||||
Page 8
| Ref. No. | Part No. | * | Description | Ref. No. | Part No. | * | Description |
|---|---|---|---|---|---|---|---|
| CAPACI | то | RS | MISCELLANEO | วบ | S PARTS | ||
|
C2501
C2505 C2506 C2507 △ C2508 C2509 C2606 |
VCEAAA1EW107M
VCEAAA1JW107M VCEAGA1VW108M VCKYPB2DE473P VCEAAA1JW476M VCKYPB3AB102K VCFPPD2DB564J |
1
1 1 1 1 1 1 |
10025VElectrolytic10063VElectrolytic100035VElectrolytic0.047200VCeramic4763VElectrolytic0.0011KVCeramic0.56200VMetalizedPolyproPolypro |
|
QACCD3014CESA
QFS-B4021GEZZ QFSHD1002CEZZ RBLN-0020CEZZ RBLN-0036CEZZ RBLN-0010CEZZ |
1
1 1 1 1 1 |
AC Line Cord AC 120V, 60Hz
Fuse – 4A 125V AC Holder – F2701 (2 Pcs Used) Ferrite Bead Ferrite Bead Ferrite Bead |
| A C2607 | VCKYPB3SB501K | J | 500P 3KV Ceramic | ||||
|
A 2609,
A 2610, A 2611, |
VCFPFC3CA272J | J | Polypro | ∆ T301 | TRANSFO |
DRI
J |
MER
Audio Output Transformer |
|
▲ 2612
C2613, 2703, 2704 |
VCKYPB2HE103P | J | 0.01 500V Ceramic | MISCELLANEC | טכ | S PARTS | |
|
2704,
2705 ▲ C2701 ▲ C2702, 2717, 2720 |
RC-QZ019DCEZZ
RC-KZ0030CEZZ |
J |
0.22 AC125V UL Spec
0.0033 AC125 Ceramic |
QTANN0797CEZZ
VSP0010PB758A RRMCG0346CESA RUNTK0004MEZZ |
J
M J M |
Antenna Terminal Board Ass'y
Speaker 8 ohm R/C Transmitter Antenna Adaptor |
|
| ▲ C2706 | RC-EZ0141CEZZ | J | 680 200V Electrolytic | CABINET | PÆ | ARTS | |
|
C 2709,
2715, 2716 C 2710 ▲ C 2711 C 2713 ▲ C 2714 C 2718 ▲ C 2719 ▲ C 2721 |
VCQPSC2DB473K
VCEAAH2CW107M VCEAAA1EW337M VCQYSH1HM103K VCKYPA2HB152K VCEAAA1EW108M VCEAAH2EW476M |
470p500VCeramic0.047200VPolypro Film100160VElectrolytic33025VElectrolytic0.0150VMylar0.0015500VCeramic100025VElectrolytic47250VElectrolytic |
1
1-1 1-2 2 2-1 2-2 2-3 2-4 2-5 2-6 |
CCAB - 5038WE V0
Not Available GNE T C 00 1 0 ME S A CWAK P 1 0 1 2 WE V0 Not Available GD o R F 1 0 4 3 ME K A HB DG B 1 0 0 2 ME S A HB DG D 3 0 0 6 ME S A Hi NDM0 1 5 8 ME S A Hi NDP 1 0 7 6 ME K A |
Cabinet, Complete, Front
Cabinet, Front Speaker Net Front Mask — Complete Assembly Front Mask Door Badge "SHARP" Badge "LINYTRON" Indication Metal Indication Plate |
||
| RESIST | S |
2-7
3 |
PKAI - 1080CEK8
CETAR5033WEV0 |
J
M |
Door Ruch
Bear Cover Assembly |
||
|
VRS- SV2HC103J
VRS- VV3DB331J VRS- VV3LB331J VRS- VV3LB331J VRS- VV3DB120J VRS- VV3LB120J VRN- VV3AB1R8J VRD- RA2BE393J VRD- RA2BE123J VRD- RA2BE123J VRD- RA2BE473J VRD- RA2BE683J VRC- UA2HG105K RR- WZ0015CEZZ RR- WZ0022CEZZ VRS- SV2HC151J VRW- KW3HC331K VRN- VV3AB1R0J VRN- VV3AB1R2J VRS- SV2HC100J |
10k1/2WOxide Film3302WOxide Film3303WOxide Film122WOxide Film123WOxide Film123WCarbon12k1/8WCarbon12k1/8WCarbon0.272WOxide Film47k1/8WCarbon68k1/8WCarbon1M1/2WSolid2.210WCement1501/2WOxide Film3305WCement11WMetal Coating1.21WMetal Coating101/2WOxide Film |
3-1
3-2 4 |
Image: Not Available GC ö VA 100 2 ME K B J B T N- 1 3 10 CE K 0 | J |
Rear Cover
CRT Cover Button – TV/CATV |
|
| REL | AY | ||||||
| RRI VIIOO 18CEZZ | Rower Balay | i i |
Page 9
PACKING OF THE SET
• Setting positions of the knobs
| CATV Band | STD | Aging switch | OFF |
|---|---|---|---|
| Brightness control | Center click | Picture control | 10/10 |
| TV | Color control | 5/10 | |
| AFT switch | ON | Tint control | 5/10 |
Page 10
Page 11
Page 12
Page 13
Page 14
25LC156
Page 15
15
Page 16
WAVEFORMS
WAVEFORM MEASUREMENT CONDITIONS:
- 1. Photographs taken on a standard gated rainbow color bar signal, the tint setting adjusted for proper color. The wave shapes at the red, green and blue cathodes of the picture tube depend on the tint, color level and picture control.
- indicates wave form check points (See chart, waveforms are measured from point indicated to chassis around.)
|
2 0,8Vp-p | 3 8.2Vр-р | (4) 8.2Vр-р |
|---|---|---|---|
| unations original original | · | ||
| Horiz, Rate | Horiz, Rate | Horiz, Rate | Vert, Rate |
| 5 7.9Vp-p | 6 0.17Vp-p | (7) 0.2Vp-p | 8 6Vp-p |
| · |
n on order of order of the second
Second Second Second Second Second Second |
||
| Horiz. Rate | Horiz. Rate | Horiz. Rate | Horiz, Rate |
| 9 2.2Vp-p | 10 6.2Vp-p | (1) 130Vp-p | 12 100Vp-p |
|
alla
pinety pinety, pinety, p |
|||
| Horiz, Rate | Horiz. Rate | Horiz. Rate | Horiz, Rate |
| (13) 155Vp-p | (14) 0.75Vp-p | 15 1.75Vp-p | 16 50Vp-p |
| Horiz. Rate | Horiz, Rate | Vert, Rate | Vert, Rate |
| 170.8Vp-p | (18) 2Vp-p | 19 28Vp-p | 20 1000Vp-p |
| * | |||
| Vert, Rate | Horiz, Rate | Horiz, Rate | Horiz, Rate |
| (21) 400Vp-p | 22 14Vp-p | 23 6Vp-p | |
| ]]]] | |||
| Horiz Bate | Horiz Bate | Horiz Bate |
NOTE:
- The unit of resistance "ohm" is omitted (K: 1000 ohms M:1 Meg ohm).
- 2. All resistors are 1/8 watt, unless otherwise noted.
- 3. All capacitors are µF, unless otherwise noted P:µµF.
- 4. (G) indicates ±2% tolerance may be used.
- 5. ± indicates line isolated ground.
- 6. ↓ indicates hot ground.
VOLTAGE MEASUREMENT CONDITIONS:
- All DC voltages are measured with VTVM connected between points indicated and chassis ground, line voltage set at 120V AC and all controls set for normal picture unless otherwise indicated.
- All voltages measured with 1000µV B & W or color signal.
This circuit diagram is a standard one, printed circuits may be subject to change for product improvement without prior notice.
SOLID STATE DEVICE BASE DIAGRAM
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