- 2-3 -
Muting circuit Troubleshooting (if MUTE)
Q700, Q750, Q720, Q770, Q730 Base “LOW”
Q700, Q750, Q720, Q770, Q730 collector “Low”
MUTE
Q783, Q784, Q785 “E” High check
Each appropriate TR replacement
IC703 5, 6, 7 pin High check
IC703 Troubleshooting check
PATT check
IC702 pin10, 14 pin signal input check
IC701 pin8, 12, 13 signal input check
IC701 pin10 “High” check
IC701 Power check replacement
IC702 pin12 “High” check
IC702 power check replacement
Q702 Base “H” check
Q720/Q770/Q730
Base “L” check
Q702 Base “H” check
No sound
Ic702 pin 4, 6 signal output check
Realy connected check
R781 voltage check
Q780 Base “H” check
Speaker connected check
Speaker connected check
IC701 pin3, 4, 15 signal output check
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
Summary of Contents for LX-D2640
Page 7: ... 1 6 MEMO ...
Page 22: ... 3 1 SECTION 3 DVD PART DVD ELECTRICAL TROUBLESHOOTING GUIDE 1 Power check flow ...
Page 23: ... 3 2 2 Test debug flow ...
Page 24: ... 3 3 ...
Page 25: ... 3 4 ...
Page 26: ... 3 5 ...
Page 27: ... 3 6 MEMO ...
Page 29: ... 5 2 MEMO ...
Page 30: ...2 15 2 16 BLOCK DIAGRAM ...
Page 31: ...2 17 2 18 SCHEMATIC DIAGRAM MAIN SCHEMATIC DIAGRAM ...
Page 32: ...2 19 2 20 AMP SCHEMATIC DIAGRAM ...
Page 33: ...2 21 2 22 FRONT SCHEMATIC DIAGRAM ...
Page 34: ...2 23 2 24 MIC POWER SCHEMATIC DIAGRAM ...
Page 35: ...2 25 2 26 DECK SCHEMATIC DIAGRAM ...
Page 36: ...2 27 2 28 WIRING DIAGRAM ...
Page 37: ...2 29 2 30 PRINTED CIRCUIT DIAGRAM MAIN P C BOARD DIAGRAM SOLDER SIDE ...
Page 38: ...2 31 2 32 MAIN P C BOARD DIAGRAM COMPONENT SIDE ...
Page 39: ...2 33 2 34 PRINTED CIRCUIT DIAGRAM AMP P C BOARD DIAGRAM SOLDER SIDE ...
Page 40: ...2 35 2 36 AMP P C BOARD DIAGRAM COMPONENT SIDE ...
Page 41: ...2 37 2 38 FRONT P C BOARD DIAGRAM SOLDER SIDE ...
Page 42: ...2 39 2 40 FRONT P C BOARD DIAGRAM COMPONENT SIDE ...
Page 43: ...2 41 2 42 MIC P C BOARD DIAGRAM ...
Page 44: ...2 43 2 44 POWER P C BOARD DIAGRAM ...
Page 45: ...2 45 2 46 MEMO MEMO ...
Page 46: ...3 7 3 8 SCHEMATIC DIAGRAM MPEG SCHEMATIC DIAGRAM SECTION 3 DVD PART ...
Page 47: ...3 9 3 10 RF SERVO SCHEMATIC DIAGRAM ...
Page 48: ...3 11 3 12 I O SCHEMATIC DIAGRAM ...
Page 49: ...3 13 3 14 PRINTED CIRCUIT DIAGRAM MIAN P C BOARD DIAGRAM SOLDER SIDE ...
Page 50: ...3 15 3 16 MIAN P C BOARD DIAGRAM COMPONENT SIDE ...