5
1.3.
Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors for :
Main Unit (SU-ZT1)
(C5501, C5502, C5509) through a 10
Ω
, 1W resistor to ground.
DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
• Current consumption at AC 220-240 V, 50 Hz in NO SIGNAL mode should be 200~800 mA (GN).
• Current consumption at AC 110-240 V, 50/60 Hz in NO SIGNAL mode should be 200~800 mA (GS).
Speaker Unit (SB-ZT1)
(C5700, C5701, C5703, C5704) through a 10
Ω
, 1W resistor to ground.
DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
• Current consumption at AC 220-240 V, 50 Hz in NO SIGNAL mode should be 100~800 mA (GN).
• Current consumption at AC 110-240 V, 50/60 Hz in NO SIGNAL mode should be 100~800 mA (GS).
1.4.
Caution for Fuse Replacement
Main Unit:
(SU-ZT1GN)
(SU-ZT1GS)
Speaker Unit (SB-ZT1)
1.5.
Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
• No sound is heard when the power is turned on.
• Sound stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are
"shorted", or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below:
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
1.6.
Safety Part Information
Safety Parts List:
There are special components used in this equipment which are important for safety.
These parts are marked by in the Schematic Diagrams, Exploded View & Replacement Parts List. It is essential that these
critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire or other hazards. Do not modify the
original design without permission of manufacturer.
Summary of Contents for SC-ZT1GN
Page 4: ...4 1 2 Caution for AC Mains Lead ...
Page 11: ...11 5 Location of Controls and Components 5 1 Main Unit SU ZT1 ...
Page 12: ...12 5 2 Speaker Unit SB ZT1 5 3 Remote Control ...
Page 13: ...13 6 Installation ...
Page 14: ...14 6 1 Basic Connections 6 1 1 Connecting equipment with HDMI terminal TV DVD recorder etc ...
Page 15: ...15 6 1 2 Connecting equipment without HDMI termial DVD player VCR etc ...
Page 16: ...16 6 1 3 Other connections ...
Page 17: ...17 6 2 AC mains lead connection ...
Page 18: ...18 7 Speaker setting SB ZT1 7 1 Setting the speakers ...
Page 19: ...19 ...
Page 27: ...27 9 2 2 Speaker Unit SB ZT1 ...
Page 28: ...28 9 2 3 Speaker Unit SB ZT1 Wireless Link ...
Page 29: ...29 ...
Page 31: ...31 ...
Page 32: ...32 10 2 Main Parts Location Diagram 10 2 1 Main Unit SU ZT1 ...
Page 33: ...33 10 2 2 Speaker Unit SB ZT1 ...
Page 35: ...35 10 3 2 Speaker Unit SB ZT1 ...
Page 48: ...48 Step 4 Remove the Weight ...
Page 49: ...49 Step 5 Remove 10 screws ...
Page 53: ...53 Step 11 Remove 2 screws Step 12 Lift up to remove Arm Cover A ...
Page 55: ...55 Step 14 Tilt the Woofer Block in order as arrows shown to detach it from the Tweeter Block ...
Page 66: ...66 Step 3 Remove the heatsink with the IC5701 ...
Page 67: ...67 Step 4 Remove 1 screw Step 5 Remove IC5701 from the heatsink ...
Page 69: ...69 Step 4 Place the heatsink with the IC5701 onto the SMPS P C B ...
Page 81: ...81 Step 4 Remove 3 screws Step 5 Remove the Power Button ...
Page 86: ...86 Step 3 Remove 4 screws Step 4 Lift up to remove Woofer Speaker SP1 ...
Page 110: ...110 Step 11 Remove 3 screws ...
Page 111: ...111 Step 12 Remove the Light Panel Step 13 Remove the Power Button ...
Page 129: ...129 14 Overall Simplified Block 14 1 Signal Flow SU ZT1 ...