DOWNLOAD LG 50PG6300-ZA (CHASSIS:PD85A) Service Manual ↓ Size: 90.49 MB | Pages: 73 in PDF or view online for FREE

 

­33­

       

-  Check the condition of the RF/SPDIF cable connection.                        

- 

Check the system clock (27MHZ,Y171) and the Voltage of VCTP_P(U81) 

- 

Check the system clock (4MHZ, Y716) and the Voltage of Mojo(U662) 

 

­34­

       

VCTP SW Upgrade

Check the signal(TA,RA) of Q591,Q592

Re-soldering or Change  the 

defect part(U591)  

Fail

Pass

Pass

 Check the signal(TX,RX)

of U81

Re-soldering or Change  the 

defect part(U592)  

Fail

Pass

Check input source cable or jack(JP591)

Mojo SW Upgrade

Check the signal(TA,RA) of Q591,Q592

Re-soldering or Change  the 

defect part(U591)  

Fail

Pass

Pass

 Check the signal(TX,RX)

of U662

Re-soldering or Change  the 

defect part(U592)  

Fail

Pass

Check input source cable or jack(JP591)

 

­35­

       

- 36 -

280

290

230

520

400

590

910

307

120

121

306

560

570

571

310

302

303

305

300

304

200

240

901

900

250

209

208

201

204

207

205

206

580

202

203

301

591

231

Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by       in the Schematic Diagram and EXPLODED VIEW. 
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. 
Do not modify the original design without permission of manufacturer.