thermally hot parts,
c.
the ac supply,
d.
high voltage, and
e.
antenna wiring. Always inspect in all areas
for pinched, out of place, or frayed wiring. Check ac power cord for damage.
7. Components, parts, and/or wiring that appear to have overheated or are otherwise damaged should
be replaced with components, parts, or wiring that meet original specifications. Additionally, determine
the cause of overheating and/or damage and, if necessary, take corrective action to remove any potential
safety hazard.
PRECAUTIONS DURING SERVICE
A. Parts identified by the
symbol are critical for safety. Replace only with part number specified.
B. In addition to safety, other parts and assemblies are specified for conformance with regulations
applying to spurious radiation. These must also be replaced only with specified replacements.
Examples:
RF converters, RF cables, noise blocking capacitors, and noise blocking filters, etc.
C. Use specified internal wiring. Note especially:
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
D. Use specified insulating materials for hazardous
live parts. Note especially:
1) Insulation Tape
2) PVC tubing
3) Spacers
4) Insulators for transistors
E. When replacing ac primary side components (transformers, power cord, etc.), wrap ends of wires
securely about the terminals before soldering.
F. Observe that the wires do not contact heat producing parts (heatsinks, oxide metal film resistors,
fusible resistors, etc.)
G. Check that replaced wires do not contact sharp edged or pointed parts.
H. When a power cord has been replaced, check that 10-15 kg of force in any direction will not
loosen it.
I. Also check areas surrounding repaired locations.
J. Use care that foreign objects (screws, solder droplets, etc.) do not remain inside the set.
K
. Crimp type wire connector
When replacing the power transformer in sets where the connections between the power cord and power
transformer primary lead wires are performed using crimp type connectors, in order to prevent shock
hazards, perform carefully and precisely the following steps.
Replacement procedure
1) Remove the old connector by cutting the wires at a point close to the connector.
Important:
Do
not re-use a connector (discard it).
Summary of Contents for 55PL9524/37
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Page 23: ...Display The Main Cabinet Exploded View ...
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Page 37: ...IIC BUS SIGNAL DIAGRAM ...
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Page 87: ... W INPUT POWER PANEL Bottom View Return to Circuit Board TOC ...
Page 89: ... U1 MAIN POWER PANEL Bottom View Return to Circuit Board TOC ...
Page 91: ... K SYSTEM BOARD Bottom View Return to Circuit Board TOC ...
Page 92: ...Refer to the next page for Bottom Side View B SSB PANEL Top View Return to Circuit Board TOC ...
Page 93: ... B SSB PANEL Bottom View Return to Circuit Board TOC ...
Page 95: ... SL SCALER PANEL Bottom View Return to Circuit Board TOC ...
Page 97: ... F DW PIP PANEL Bottom View Return to Circuit Board TOC ...
Page 99: ... CB1 3D COMB FILTER PANEL Bottom View Return to Circuit Board TOC ...
Page 101: ... V REAR JACK PANEL Bottom View Return to Circuit Board TOC ...
Page 103: ... O1 SIDE JACK PANEL Bottom View Return to Circuit Board TOC ...
Page 105: ... LS LED SENSOR PANEL Bottom View Return to Circuit Board TOC ...
Page 107: ... P1 LED KEYBOARD PANEL Bottom View Return to Circuit Board TOC ...
Page 109: ... TS1 THERMAL SENSOR PANEL Bottom View Return to Circuit Board TOC ...
Page 111: ... AA1 AUDIO AMPLIFIER PANEL Bottom View Return to Circuit Board TOC ...
Page 112: ...Refer to the next page for Bottom Side View Return to Circuit Board TOC ...
Page 113: ...Return to Circuit Board TOC ...
Page 115: ... 7665 Page 1 P1 P2 P3 P4 P5 P6 P7 C1 C2 C3 C4 C5 C6 F30 F31 F32 L14 L15 L16 V31 ...
Page 116: ... 7665 Page 2 V32 F14 I 6 L 8 V 1 V 2 V 6 V 7 V 8 V 9 V10 L1 L2 L3 L4 L5 L6 L7 L8 L9 ...
Page 117: ... 7665 Page 3 F17 F18 F19 F20 L12 V19 V20 V21 V28 V29 V30 B51 B52 B53 B54 B55 B57 B58 B60 A15 ...
Page 121: ... 7665 Page 7 F2 F14 F15 F16 F17 F18 V19A V20A F 3 F 4 F 5 F 6 F 7 F 8 F 9 F10 F11 F12 F13 A1 ...
Page 122: ... 7665 Page 8 A2 A3 A4 A5 A6 A7 A8 ...
Page 124: ...Overall Cabinet Exploded View Page 1 of 5 ...
Page 125: ...Cabinet Detail 1 Exploded View Page 2 of 5 ...
Page 126: ...Cabinet Detail 2 Exploded View Page 3 of 5 ...
Page 127: ...Power Supply Assembly Exploded View Page 4 of 5 ...