21 Exploded View and Replacement Parts List---------- 179
21.1. Exploded View and Mechanical Replacement
Parts List--------------------------------------------------179
21.2. Electrical Replacement Parts List ------------------185
2
1Safety Precautions
1.1.General Guidelines
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
3. After servicing, carry out the following for leakage current checks to prevent the customer from being exposed to shock hazards.
1.1.1.Leakage Current Cold Check
1. Unplug the AC cord and connect a jumper between the two prongs on the plug.
2. Using an ohmmeter measure the resistance value, between the jumpered AC plug and each exposed metallic cabinet part on
the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the
chassis, the reading should be between 1mW and 5.2mW. When the exposed metal does not have a return path to the chassis, the reading must be .
1.1.2.Leakage Current Hot Check
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a 1.5kW, 10 watts resistor, in parallel with a 0.15mF capacitors, between each exposed metallic part on the set and a
good earth ground such as a water pipe, as shown in Figure 1.
3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.
6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent)
may be used to make the hot checks, leakage current must not exceed 1/2 milliamp. should the measurement is outside of
the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and re-checked before it is
returned to the customer.
Fig. 1
3
1.2.Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors for :
Main Unit (SU-ZT2)
(C5501, C5502, C5503, C5509) through a 10Ω, 1W resistor to ground.
Speaker Unit (SB-ZT1/2)
(C5701, C5703, C5704) through a 10Ω, 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 120 V, 60 Hz in NO SIGNAL mode should be 100~800 mA.
1.3.Caution for Fuse Replacement
Main Unit (SU-ZT2)
Speaker Unit (SB-ZT1/2)
1.4.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.
1.5.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.
4
1.5.1.Main Unit (SU-ZT2)
SafetyRef. No.Part No.Part Name & DescriptionRemarks
SafetyRef. No.Part No.Part Name & DescriptionRemarks
100REX1346-1BLACK WIRE (SMPS-AC)
101REX1356-1RED WIRE (SMPS-AC)
113RGN2979B-K1SPEC LABELS1
113RGN2979H-KSPEC LABELK1
114RGN2980B-K1WIRELESS LABELS1
114RGN2980H-KWIRELESS LABELK1
PCB1REP4527B-PSMPS P.C.B.(RTL)
PCB2REP4527B-PAC INLET P.C.B.(RTL)
PCB6REPX0679DRX P.C.B.
DZ5701 ERZV10V511CSZNR
L5702ELF19H010ALINE FILTER
T5701ETS28BH145ACMAIN TRANSFORMER
T5751ETS19AB2C6AGSUB TRANSFORMER
PC5701 B3PBA0000402PHOTO COUPLER
PC5720 B3PBA0000402PHOTO COUPLER
PC5799 B3QAZ0000062PHOTO COUPLER
F1K5D402APA008FUSE
TH5702 D4CAA5R10001THERMISTOR
P5701K2AB2B000007AC INLET
C5700F1BAF22200232200pF
C5701ECQU2A104MLC0.1uF
C5703ECQU2A224MLC0.22uF
C5704F1BAF10200201000pF
5
2Warning
2.1.Prevention of Electro Static Discharge (ESD) to Electrostatically Sensi-
tive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and
semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage
caused by electrostatic discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equiped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equiped with ES devices, place the assembly on a conductive surface such as alumin-
ium foil, to prevent electrostatic charge build up or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder remover device. Some solder removal devices not classified as “anti-static (ESD protected)” can
generate electrical charge sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminium foil or comparable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
Caution:
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) suf-
ficient to damage an ES device).
6
2.2.Service caution based on Legal restrictions
2.2.1.General description about Lead Free Solder (PbF)
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.
Definition of PCB Lead Free Solder being used
The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.
(See right figure)
Service caution for repair work using Lead Free Solder (PbF)
• 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).
Recommended Lead Free Solder (Service Parts Route.)
• 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)
Note
* Ingredient: Tin (Sn), 96.5%, Silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%
7
3Service Navigation
3.1.Service Information
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-ZT1/2)
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.: REPX0678D)
- RX Module P.C.B. (Part No.: REPX0679D)
Note: Retention time limit applies.
• Micro-processor IC
This model uses BGA IC (IC6001). Please confirm function and operation before replacement to new part.
Part No. for IC6001 (RFKB4528AA-M)
8
4Specifications
4.1.Main Unit (SU-ZT2)
Q PRE AMPLIFIER SECTION
Input sensitivity / Input Impedance
TV, AUX3600 mV / 47 kΩ
S/N ratio (IHF A)
BD/DVD, TV, AUX1, AUX2 (Digital
Input)
Tone controls
BASS50 Hz, +6 to -6 dB
TREBLE20 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)
Subwoofer Output1
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.
Q MAIN UNIT GENERAL
Power supplyAC 120 V, 60 Hz
Power consumption16 W
In standby condition0.5 W
In standby condition (HDMI off
mode)
Dimensions (WxHxD)430mm x 59mm x 262mm
(16-15/16”x2-5/16”x10-5/16”)
Mass [Weight]Approx. 2 kg (4.4 lb.)
Operating temperature range0°C to 40°C (32°F to 104°F)
Operating humidity range20% to 80% RH (no condensa-
Q WIRELESS SECTION
Frequency of the using band2.4000 GHz to 2.4835 GHz
Number of using channels3
The reaching distance15m (49ft)*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.
80 dB (IHF ‘66)
0.2 W
tion)
Mid High part2.4 x 10 cm flat type x 4
Q SPEAKER GENERAL*2
Power supplyAC 120 V, 60 Hz
Power consumption20 W
Wireless link standby0.8 W
In standby condition0.1 W
Dimensions (WxHxD)290mm x 1231mm x 290mm
Mass [Weight]Approx. 3.9 kg (8.6 lb.)
Operating temperature range0°C to 40°C (32°f to 104°F)
Operating humidity range20% to 80% RH (no condensa-
*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 analyzer.
2. Total harmonic distortion is measured by using AES17 filter.
Q System : SC-ZT2PP-KMusic center: SU-ZT2PP-K
4
Q System : SC-ZT2PP-SMusic center: SU-ZT2PP-KA
(11-13/32”x48-15/32”x11-13/32”)
tion)
Speaker: SB-ZT2PP-K1
Speaker: SB-ZT1PP-S1
4.2.Speaker Unit (SB-ZT1/2)
Q POWER AMPLIFIER SECTION*2
RMS output power
10% total harmonic distortion
Woofer Speaker ch60 W (100 Hz, 3 Ω)
Mid High Speaker ch20 W (1 kHz, 8 Ω)
System Total Power*3160 W (80 W x 2)
FTC output power
1.0% total harmonic distortion
50Hz - 250Hz Woofer Speaker ch37 W (3 Ω)
250Hz - 20kHz Mid High Speaker
ch
System Total Power*3100 W (50 W x 2)
Q SPEAKER SECTION*2
2 way 5 speakers system (Bass reflex type)
Woofer part12 cm cone type x 1
13 W (8 Ω)
9
5Location of Controls and Components
5.1.Main Unit (SU-ZT2)
10
5.2.Speaker Unit (SB-ZT1/2)
5.3.Remote Control
11
6Installation
12
6.1.Basic Connections
6.1.1.Connecting equipment with HDMI terminal (TV, DVD recorder, etc.)
13
6.1.2.Connecting equipment without HDMI terminal (DVD player, VCR, etc.)
14
6.1.3.Connecting STB etc. and audio terminals (DVD player, etc.)
15
6.1.4.Other connections
16
6.2.AC power supply connection
17
7Speaker setting (SB-ZT1/2)
7.1.Setting the speakers (Front and Surround speakers)
18
19
7.2.Setting surround speakers
20
7.3.Initialize the Speaker Setting
AC IN
TEST
ID
Pole
(mid-high part)
Base
(woofer part)
AC inlet
TEST
terminal
[WIRELESS LINK]
indicator
ID switch
For switching the speaker
“ON/OFF”
Front view
Side view
About the method of initializing the setting of the speaker.
Please initialize it when the main body of the speaker is changed or it added.
Please set the speaker after ID is reset.
Preparation:
Please connect the power supply code of the speaker.
Please confirm the power supply of the speaker cuts.
1. It keeps pushing the power switch for about five seconds with ID switch pushed.
(ID is reset.)
2. Please turn off power of the speaker.
21
8Self-diagnostic and special mode setting
This unit is equipped with the self-diagnostic display function, which alarms faulty operation with error code. Use this function during
servicing.
8.1.Activating Service Mode
This mode can be used during servicing.
1. Plug the AC adapter to the power source. Press and hold down the [VOL +] button and the [VOL -] button, and then press the
[POWER] button at the same time.
2. The message, [SERVICE] appears on the display for three seconds, and then it will display the following. Refer to Fig. 1.
Fig. 1
3. To confirm the μP software version: When [VOL +] button is pressed, [M--- ****] is displayed [---] is current main micon version;
[****] is current checksum. If no ROM correction, [NO] is displayed.
When [VOL -] is pressed, display [H***], [***] is current version of HDMI micon.
8.2.Activating Doctor Mode
This mode can be used during servicing.
1. Plug the AC adapter to the power source. Press and hold down the [INPUT SELECTOR] button and the [VOL +] button, and
then press the [POWER] button at the same time.
2. The message, “_DOCTOR_” appears on the display for three seconds, and then it will display the following. Refer to Fig. 2.
Fig. 2
8.3.Error Codes Display List
An error code automatically appears on the display (LCD) when faulty operation is detected. Refer to Fig. 3.
FANLOCKFan stoppedFailure fan and fan control circuits. Check for faulty parts
F70Communication error between sub micro- pro-
F76When the power is turned on, the unit power
Remote 2
Remote 1
U701HDMI does not work properly.The equipment connected by the HDMI cable is not com-
U704HDMI does not work properly.The system is receiving video signals that are incompatible
U703A problem has occured with the HDMI connec-
NOT POSSIBLE FOR THIS INPUT
SOURCE
(Scrolling)
NOT POSSIBLE FOR THIS PCM
SOURCE
(Scrolling)
cessor and its peripheral LSI
automatically turns off; the power cannot be
turned on.
Main unit code setting problem with remote
control.
tion.
Input signals are automatically cancelled.You cannot use Dolby Virtual Speaker, Dolby Pro Logic II
Input signals are automatically cancelled.You cannot use Dolby Virtual Speaker, Dolby Pro Logic
Speaker short and failure in power amplifier, pre-amplifier
circuits. Check for faulty parts and replace with new parts if
necessary.
and replace with new parts if necessary.
Failure sub-micro processor and its peripherals LSI. Check
for faulty parts and replace with new parts if necessary.
Failure in the power circuit system of the unit. This may
happen when the direct current electricity is supplied to
speaker terminals. Check that the speaker wires are not
shorted (bare wire touching each other) or that the unit is in
a hot enviroment without proper ventillation.
Set the same remote control code for this system and
remote control.
• If “REMOTE 2” is displayed, set remote control code to
“2”.
• If “REMOTE 1” is displayed, set remote control code to
“1”.
patible with this system’s copyright protection technology.
with it through HDMI connection. Check the settings of the
connected equipment.
A problem has occurred with the HDMI connection. Try the
following to correct the problem. Consult your dealer if the
error code remains on the display.
• Turn the connected equipment off and on again.
• Disconnect the HDMI cable then reconnect it.
• Do not connect more than 2 equipment in series to the
output of this system.
and SFC for dual sounds.
and SFC effect with PCM signals with sampling frequency
over 48 kHz.
SFC is not available for multi-channel LPCM signal.
MUTEAll indicators of FL are displayed. All LED are off.
VOL +Check Main μP software version.
VOL -Check HDMI uP software Version.
AUX 3STEREOE2 : OPT2, Others : Analog-18dB/0dB
Note: After this setting, only “POWER” button or “Checker Command” code by the remote control can be entered.
Display [M---- ****]; ---- is current version; **** is current checksum. If no ROM correction, [NO] is displayed.
* Volume is still increased but not displayed.
Display [H---- ^^^^^]; ---- is current version.
* Volume is still increased but not displayed.
23
Remote ControlTest Mode Function and settings
SelectorSound ModeOther settingsVol/Tone
TESTAUX 4 (Analog)—All CH output mode-18dB/0dB
TV (OPT1)STEREOBalance is set to leftmost.-18dB/0dB
TV (OPT1)STEREOBalance is set to rightmost.-18dB/0dB
VIRTUAL
SPEAKER
AUX 4 (Analog)DVS (REF <-> WIDE)Switch alternately-18dB/0dB
Fig. 4
8.5.Returning to Normal Display
1. Press the [POWER] button on the unit to exit the function. The power is turned off.
24
9Troubleshooting
9.1.HDMI Checking Method
1. Connection of HDMI system
2. Check of HDMI Sound
a. Using the [DVD AUDIO TEST DISC V-612] and DVD-VIDEO disc with Dolby Digital signal.
b. [DVD AUDIO TEST DISC V-612] - Track No. 92 (96kHz, 5.1ch). Track No. 40 (Zero) Check the Level and Noise, output
from L / C / R / SL / SR / SW / speaker or pin.
c. [DVD AUDIO TEST DISC V-612] - Track No. 7 (192kHz, 2ch)
if this source can be reproduced, it is OK.
3. Check of HDMI Picture
a. The picture quality of TV is checked by watching that using [DVD TEST DISK S-20] or DVD disc with the colour bar signal.
b. [DVD TEST DISK S-20] - Track No. 2 (Flag of the rising sun)
[Colour bar disc] - Colour bar signal.
c. Make on DVD Setup Picture
25
Comfirmed that there are neither distortion nor a noise on the screen.
• If it is a picture quality equal when DVD was connected directly to TV, it is OK
1. Connect directly DVD player to TV.
2. Connect DVD player to set then connect it to TV.
3. Do the comparison for (1) and (2) if same, it is OK.
26
9.2.Troubleshooting Flow Chart
Power Supply
No power supplyPrimary Fuse (F701㧕check
Power source checking
Operation SwitchNo Operation
Operation Failure
HDMI InputNo Picture
No Audio
HDMI Error appears
Optical InputNo Audio
Audio InputNo Audio
HDMI OutputNo pictureSame as HDMI Input check
No audioSame as Audio output check
Audio OutputNo audio
Output (SW㧕
㧕
No audio
Headphone OutputNo audio
Audio output signal checking
ޓJK4003, JK4004, JK4005, JK4006
Headphone Output signal chec
k
ޓCN4601 ĺ JK4611
Main P.C.B chec
k
ޓIC4001, IC4304
SW output signal check
ޓJK4002
Main P.C.B chec
k
ޓIC4001, IC4303
Main P.C.B chec
k
ޓDSP output㧦IC4201㨪IC4203
ޓSelector Volume IC㧦IC4001
ޓAudio am