Dicas Reparação
Modelo - Chassis D25
Pesquisa: D25 Enviar Dica Resolvida
Resultados 56
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Goodmans | GD25 | PATTERNING , ESP WITH WEAK SIG , CHANNELS 24 , 28 , 31 | REPLACE AERIAL LEAD WITH QUALITY LEAD , TOSHIBA HAVE PART AVAIL. Pt No 70011442 | ||
| Decca | D25N 440 | Service adjust proc | PSU Use pot PP1 to adj HT for 151V ± 0.5V for 16:9 tubes at TSP28 terms. Activating service mode 1. Switch on the appliance whilst holding MENU on set until red LED lights. 2. Release MENU button & press standby on R/C. Defaults to prog l - (make sure test sig is on this chan) Functsto be selected using P+ & P- keys on R/C. Control & adjusts = Vol keys.note initial values before adj. In the event of replacing NVM memory or micro, it is nec to make all adjusts accessible in service mode, since replacement memory is supplied without any prior prog & new micro reqs initialization. 1. IF video setting (IFxx AFCxx) adjust reqs special equipment & needed only for ICC2 N1 version, recognisable by presence of LC7 coil. If the coil is present, adj IF & AFC to values given on label left side of main PCB so that a suitable approx is achieved. If the coil is not present, adjust as follows: IF 50, AFC 3 2. Initialization (INIT CTV 831 x (VERSION) The init proc, which also indicates software version for micro, is enabled with Vol+ key & must be carried out whenever NVM memory or micro replaced. Initialization has effect of erasing all data from memory except bytes option. 3. Screen grid voltage (Vg2 Test) Select funct, press Vol+ key. A luminous hor line appears in middle of screen. Adjt pot G2 so that line is just visible (in a dimly lit room). Press Vol- & wait for few secs until service mode is restored. 4. Control bytes (Cox) These are control registers that must be set as follows: Co4 00, Co3 27, Co2 96 5. Option bytes (Opx) Correct values to set for each appliance are given on label on back cover alongside notations Op3,0p2 & Opl. 6. Audio/stereo A2 decoder (LA/SA) The LA & SA functs allow adjustment of separation between right & left audio chans, & of file respective levels. A RF stereo generator is therefore reqd. Dis modulation to LH chan & adj LA for 1.4Vp-p at pin 1 of SCART 1 connector.Adj SA for min residual signal at pin 3 of SCART 1. If a stereo generator is not available/set LA to 01 and SA to OB to obtain a fair approximation. 7. Setting the luminance/chrominance delay (Yx) The delay must be adjusted to the following values: Yp 18 (PAL) (UK VERSIONS) Ys 30 (SECAM) Yn 20 (NTSC) Yo 22 (SCART) The Yn function is only accessible if signal is NTSC coded (standard accepted only by SCART) 8. On screen display (OSD) Load fixed value 3F. (AUDIO MENU APPEARS) 9. White control (WB/WG/WR) Using black & white bar signal, adjust to obtain a correct grey scale. 10. Hor geometry (TC/CP/PW/EW/HSH) 2 groups of these functions, 1 for 4:3 format (suffix 4) & 1 for 16:9 format (suffix 16), both of which must be adjust because they are used in zoom functs (4:3 tubes included). The functs of single parameters - TC Trapezium correction (4 adjusts appear in 4 X 3 & 16 X 9) CP Corner parabola correction PW Parabola correction EW Horizontal amplitude HSH Horizontal shift For 4:3 format tubes, enter EW16 = 3F to ensure proper zooming. 11. Vertical geometry (SC/VSH/VA/VS) Vertical geometry adj starting with VS (vertical slope), which is set so that central horiz line of test signal is exactly at boundary between the visible image & black part below & must not be changed again. Functions of single parameters - SC Vertical S-coirection (linearity) VSH Vertical shift VA Vertical amplitude VS Vertical slope 12. AGC tuner setting (AG) With a signal of ImV applied to ae i/p on UHF chan, adjust to 4Vdc at pin 1 of tuner. 13. De-activating service mode Once all nec adjusts have been made, press TV or MENU OFF on R/C to memorise and return to normal operating mode | ||
| Sony | HCD251 | POWER TRANSFORMER FUSIBLE LINK OPENS - REPLACE T901 | The fusible link within the transformer opened. This is thesecond time in 60 days. | ||
| Sony | CFD250 | OPTICAL BLOCK REPLACEMENT | When replacing optical block for this model the 884824601listed in manual is shipped. This part will not connect to thetranslation board item 651. I have found after research that SB 332 whichis for the CFD580/757/758/767/768 lists the translation boar | ||
| Sony | ITD250 | UNIT DEAD - REPLACE C405, P/N 1-126-234-11 | Unit dead, B+ is grounded and positive battery terminal isgrounded too. Found C405 shorted. | ||
| Sony | ITD250 | DIFFERENT LAYOUT CIRCUIT BOARD | Ordered a LCD board ref 119, the LCD board ref 119 does notmatch because the layout of new LCD board is different from the layout ofthe old LCD board. -HQ COMMENTS: Contact Kansas City Parts, attn Jamie Lyon, phone #816-891-7550 ext 256, fax # 816-891-2 | ||
| Sony | HCDD250 | CANNOT SWITCH MODES | System control IC601 part no in the service manualis 875924806. The replacement is 875928891, desc. MPD78042AGF012-3B9, inthe mainframe system. The part that KC is shipping is 875932541, desc.MPD78042AGF 022 3B9, and is not comparable. | ||
| Sony | HCDD250 | NO LEFT AUDIO OUT - SOLDERED NO 701 ON POWER AMP BOARD | Unit had no left audio. Visual inspection found No 701 jack on power amp board not soldered from manufacturer. | ||
| Sony | ITD250 | STATIC IN RECEIVER - REPLACE Q314, P/N 8-729-281-53 | When you are talking, the other person gets static. | ||
| Sony | ITD250 | LINE 1 LOCK ON HOLD - LEAKY D302 | Line 1 locks up on hold when line 2 is being used, or whenline 1 is ringing. | ||
| Sony | ITD250 | SHORT BATTERY LIFE | Customer complained of short battery life. This appeared to becaused by drain from the line 2 LED being on all the time. Switch 202controls this condition. The customer was counseled. | ||
| Sony | D25 | NO OR INTERMITTENT POWER - RESOLDER Q418 | No or intermittent power, lights may flicker weakly and shutdown. | ||
| Sony | CFD250 | AMS FORWARD FAILS WHEN (51) PANEL SUB ASSY IS REPLACED. | When (51) panel sub assy, control the AMS forward button isalways depressed, due to a plastic spacer (clear plastic piece) withadhesive on one side adhered to S802. | ||
| Sony | ITD250 | SPEAKER PHONE CUTS OUT - RESOLDER C344 | When using speaker phone it would intermittently cut out. | ||
| Sony | ITD250 | DIFFERENT SIZE OF NEW SPEAKERS. | I tried twice to replace speaker SP1, p/n 1-503-819-11, but itdid not fit in the unit, as it is slightly too big. When I tried to orderspeaker p/n 1-544-480-11 as per Telephone Products Service Bulletin No.107, I got instead speaker, p/n 1-503-905-11, wh |