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The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this
equipment in considering the globally environmental conservation.

The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin
(Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86

°F) more than that

of the normal solder.

• The lead free solder has to be used when repairing the equipment for which the lead free solder is used.

(Definition: The letter of “PbF” is printed on the PCB using the lead free solder.)

• To put lead free solder, it should be well molten and mixed with the original lead free solder.
• Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC.
• Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt the

lead free solder.

• Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30 degrees

C (662±86

°F).

• The following 3 types of lead free solder are available through the service parts route.

RFKZ03D01K-----------(0.3mm 100g Reel)
RFKZ06D01K-----------(0.6mm 100g Reel)
RFKZ10D01K-----------(1.0mm 100g Reel)

* Ingredient: Tin (Sn), 96.5%, Silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%

The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.
(See right figure)

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This service manual contains technical information which will allow service personnel’s to understand and service this model.
Please place orders using the parts list and not the drawing reference numbers.

If the circuit is changed or modified, this information will be followed by supplement service manual to be filled with original service
manual.

• Printed Circuit Boards:

This model supports to wireless speakers (SB-ZT1)
The TX Module P.C.B. and RX Module P.C.B. used for wireless signal transmission are supplied as an assembled module.

- TX Module P.C.B. (Part No.: RD-DWKX006JM)
- RX Module P.C.B. (Part No.: RD-DWKX009JM)

• Micro-processor IC

This model uses BGA IC (IC6001). Please confirm function and operation before replacement to new IC.
Part No. for IC6001 (RFKB4528A-M)

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■

 PRE AMPLIFIER SECTION

Input sensitivity / Input Impedance
TV, AUX3

600 mV / 47 k

Ω

S/N ratio (IHF A)
BD/DVD, TV, AUX1, AUX2 (Digital 
Input)

80 dB (IHF ‘66)

Tone controls
BASS

50 Hz, +6 to -6 dB

TREBLE

20 kHz, +6 to -6 dB

Input / Output terminal
Audio Input
Analogue Input (TV, AUX3)

2

Optical Digital Input (TV, AUX2)

2

Audio Output
Audio Output (Front L/R, Surround 
L/R)

4

Subwoofer Output

1

Headphone Output (16 to 64 

Ω)

1

Video/Audio
HDMI Input (BD/DVD, AUX1)

2

HDMI Output (TV)

1

This system supports “HDAVI Control 4” function.
■

 MAIN UNIT GENERAL

Power supply

AC 220 to 240 V, 50 Hz (GN)

AC 110 to 240 V, 50/60 Hz (GS)

Power consumption

16 W

In standby condition

0.5 W

In standby condition (HDMI off 
mode)

0.2 W

Dimensions (WxHxD)

430mm x 59mm x 262mm

Mass

Approx. 2 kg

Operating temperature range

0

°C to 40°C

Operating humidity range

20% to 80% RH (no condensa-

tion)

■

 WIRELESS SECTION

Frequency of the using band

2.4000 GHz to 2.4835 GHz

Number of using channels

3

The reaching distance

15m*1

*1 It is under the condition as follows. 
At same room indoor, there is not an obstacle between the main unit 
and the speaker.
And installing a main unit in the position with equal to or more than 50 
cm height.

■

 POWER AMPLIFIER SECTION*2

RMS output power (at AC 220 to 240 V)
10% total harmonic distortion
Woofer Speaker ch

60 W (100 Hz, 3 

Ω)

Mid High Speaker ch

20 W (1 kHz, 8 

Ω)

System Total Power*3

160 W (80 W + 80 W)

DIN output power (at AC 220 to 240 V)
1.0% total harmonic distortion
100Hz Woofer Speaker ch

40 W (3 

Ω)

1kHz Mid High Speaker ch

15 W (8 

Ω)

System Total Power*3

110 W (55 W + 55 W)

■

 SPEAKER SECTION*2

2 way 5 speakers system (Bass reflex type)
Woofer part

12 cm cone type x 1

Mid High part

2.4 x 10 cm flat type x 4

■

 SPEAKER GENERAL*2

Power supply

AC 220 to 240 V, 50 Hz (GN)

AC 110 to 240 V, 50/60 Hz (GS)

Power consumption

20 W

Wireless link standby

0.8 W

In standby condition

0.15 W

Dimensions (WxHxD)

290mm x 1231mm x 290mm

Mass

Approx. 3.9 kg

Operating temperature range

0

°C to 40°C

Operating humidity range

20% to 80% RH (no condensa-

tion)

*2 : per 1 speaker
*3 : use 2 speakers
Note:
1. Specifications are subject to change without notice.
2. Total harmonic distortion is measured by the digital spectrum ana-
lyzer.
2. Total harmonic distortion is measured by using AES17 filter.
■

 System : SC-ZT1GN-S

Music center: SU-ZT1GN-K

Speaker: SB-ZT1GN-S1

■

 System : SC-ZT1GS-S

Music center: SU-ZT1GS-K

Speaker: SB-ZT1GS-S1

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