(This “Safety Precaution” is applied only in U.S.A.)Before servicing, unplug the power cord to prevent an electric shock.
When replacing parts, use only manufacturer’s recommended components for safety.
Check the condition of the power cord. Replace if wear or damage is evident.
After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.
Before returning the serviced equipment to the customer, be sure to make the following insulation resistance test
to prevent the customer from being exposed to a shock hazard.
1 Safety Precaution
Unplug the power cord and short the two prongs of the plug with a jumper wire.
Turn on the power switch.
Measure the resistance value with ohmmeter between the jumper AC plug and each exposed metal cabinet part, such as
screwheads, antenna, control shafts, handle brackets, etc.Measure the resistance value with ohmmeter between the
jumper AC plugand each exposed metal cabinet part, such as screwheads, antenna, control shafts, handle brackets, etc.
Equipment with antenna terminals should read between 2.7M˜ and 3.9M˜ to all exposed parts*. ( Fig.1 )
Equipment without antenna terminals should read approximately infinity to all exposed parts. ( Fig.2 )
*Note : Some exposed parts may be isolated from the chassisby design. These will read infinity.
If the measurement is outside the specified limits, there is a possibility of a shock hazard. The equipment should be repaired
and re-checked before it is returned to the customer.
1.1 Insulation Resistance Test
Fig.1
Fig.2
1.2 Caution for fuse replacement
(For English)
CAUTION:
Replace with the same type fuse:
(Manufacturer: LITTELFUSE, INC, Type: F1, 2.5A, 125V)
(For Canadian French)
ATTENTION:
Utiliser un fusible de rechanche de méme type:
(Manufacturer: LITTLEFUSE, INC, Type: F1, 2.5A, 125V)
3
Summary of Contents for SC-TM23
Page 8: ...9 Operation Procedures 8 ...
Page 44: ...44 15 Block Diagram ...
Page 45: ...45 ...
Page 46: ...46 ...
Page 47: ...47 6601 6601 565 ...
Page 48: ...48 ...
Page 49: ...49 565 9 ...
Page 50: ...50 ...
Page 51: ...51 16 Voltage Measurement ...
Page 52: ...52 ...
Page 54: ...17 1 A CD Servo Circuit 54 ...
Page 55: ...55 ...
Page 56: ...56 17 2 B Main Tuner Circuit ...
Page 57: ...57 17 3 B Main Circuit ...
Page 58: ...58 ...
Page 59: ...59 ...
Page 60: ...60 ...
Page 61: ...17 4 C Panel Circuit 61 ...
Page 62: ...62 ...
Page 64: ...64 17 6 H Power Circuit ...
Page 65: ...65 17 7 I Deck Circuit J Mechanism Circuit ...
Page 66: ...66 ...
Page 68: ...68 18 2 B Main P C B ...
Page 69: ...69 ...
Page 70: ...70 18 3 C Panel P C B ...
Page 71: ...71 ...
Page 72: ...72 18 4 D Transformer P C B ...
Page 73: ...73 18 5 E CD Detect P C B F Spindle Position P C B G CD Loading P C B K Tuner Pack P C B ...
Page 74: ...18 6 H Power P C B 74 ...
Page 75: ...75 ...
Page 76: ...18 7 I Deck P C B J Deck Mechanism P C B 76 ...
Page 77: ...77 19 Wiring Connection Diagram ...
Page 78: ...78 20 Illustration of IC s Transistors and Diodes ...
Page 82: ...82 22 Troubleshooting Guide ...
Page 86: ...86 23 1 2 Deck Mechanism Parts List ...
Page 89: ...89 23 2 2 CD Loading Mechanism Parts List ...
Page 123: ...2 Connection of the Speaker Wiring 3 Cabinet Parts Location 123 ...