For U.S.A., Canada &
Europe model
SERVICE MANUAL |
Ver. 2 |
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MODEL SYS-65HT
SYS-55HT
SPEAKER SYSTEM PACK
SC-C65/SC-A65
SPEAKER SYSTEM
DSW-65
SUPER WOOFER
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●For purposes of improvement, specifications and design are subject to change without notice.
●Please use this service manual with referring to the operating instructions without fail.
●Some illustrations using in this service manual are slightly different from the actual set.
● ● 8
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●
TOKYO, JAPAN
X0211V.02 DE/CDM 0409
SYS-65HT/SYS-55HT/SC-C65/SC-A65/DSW-65
SAFETY PRECAUTIONS
The following check should be performed for the continued protection of the customer and service technician.
LEAKAGE CURRENT CHECK
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 460 kohms, the unit is defective.
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500 |
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1 Ω |
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(1) |
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(2)
さい。特に配線図、部品表に
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(1) … |
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(2) … |
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2
SYS-65HT/SYS-55HT/SC-C65/SC-A65/DSW-65
NOTE FOR PARTS LIST
l Part indicated with the mark " " are not always in stock and possibly to |
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take a long period of time for supplying, or in some case supplying of |
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part may be refused. |
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l When ordering of part, clearly indicate "1" and "I" (i) to avoid mis- |
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supplying. |
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l Ordering part without stating its part number can not be supplied. |
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l Part indicated with the mark " " is not illustrated in the exploded view. |
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l Not including Carbon Film Resister ±5%, 1/4W Type in the P.W.Board |
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parts list. (Refer to the Schematic Diagram for those parts.) |
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l Not including Carbon Chip Resister 1/16W Type in the P.W.Board parts |
5% 1/4W |
list. (Refer to the Schematic Diagram for those parts.) |
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WARNING: |
1/16W |
Parts marked with this symbol have critical characteristics.
Use ONLY replacement parts recommended by the manufacturer.
l Resistors
Ex.: |
RN |
14K |
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2E |
182 |
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G |
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FR |
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Type |
Shape Power ResistAllowable |
Others |
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and per- |
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error |
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formance |
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RD |
: Carbon |
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2B |
: 1/8W |
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F |
: ±1% |
P |
: Pulse-resistant type |
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RC |
: Composition |
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2E : 1/4W |
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G |
: ±2% |
NL : Low noise type |
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RS |
: Metal oxide film |
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2H : 1/2W |
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J |
: ±5% |
NB : Non-burning type |
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RW : Winding |
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3A : 1W |
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K |
: ±10% |
FR : Fuse-resistor |
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RN |
: Metal film |
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3D : 2W |
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M |
: ±20% |
F |
: Lead wire forming |
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RK |
: Metal mixture |
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3F |
: 3W |
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3H : 5W |
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] Resistance |
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1 |
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8 |
2 |
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1800 ohm = 1.8 kohm |
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s |
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s |
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Indicates number of zeros after effective number. |
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2-digit effective number. |
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• Units: ohm |
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1 |
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R |
2 |
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1.2 ohm |
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s |
s |
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1-digit effective number. |
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2-digit effective number, decimal point indicated by R. |
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• Units: ohm |
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RN |
14K |
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2E |
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182 |
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G |
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FR |
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RD |
: |
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2B |
: 1/8 |
W |
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F |
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±1% |
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P |
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RC |
: |
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2E |
: 1/4 |
W |
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G : |
±2% |
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NL : |
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RS |
: |
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2H |
: 1/2 |
W |
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J |
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±5% |
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NB : |
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RW : |
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3A |
: 1 |
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W |
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K : |
±10% |
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FR |
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RN |
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3D |
: 2 |
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W |
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M : |
±20% |
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F |
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RK |
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3F |
: 3 |
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W |
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3H |
: 5 |
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W |
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18 |
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2 |
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Ö |
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1800 |
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=1.8k |
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1R |
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2 |
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1.2 |
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Ö |
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2 |
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R |
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l Capacitors
Ex.: |
CE |
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04W |
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1H |
2R2 |
M |
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BP |
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Type |
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Shape |
Dielectric Capacity Allowable Others |
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and perstrength |
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error |
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formance |
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CE |
: Aluminum foil |
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0J |
: 6.3V |
F |
: ±1% |
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HS : High stability type |
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electrolytic |
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: ±2% |
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CA |
: Aluminum solid |
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1A |
: 10V |
G |
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BP : Non-polar type |
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electrolytic |
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: ±5% |
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CS |
: Tantalum electrolytic |
1C |
: 16V |
J |
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HR : Ripple-resistant type |
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CQ : Film |
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1E |
: 25V |
K |
: ±10% |
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DL : For change and discharge |
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CK |
: Ceramic |
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1V |
: 35V |
M |
: ±20% |
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HF : For assuring high |
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requency |
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CC : Ceramic |
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1H |
: 50V |
Z |
: +80% |
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U |
: UL part |
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CP |
: Oil |
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2A |
: 100V |
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–20% |
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C |
: CSA part |
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CM : Mica |
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2B |
: 125V |
P |
: +100% |
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W |
: UL-CSA type |
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CF |
: Metallized |
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2C |
: 160V |
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–0% |
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F |
: Lead wire forming |
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CH : Metallized |
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2D |
: 200V |
C |
: ±0.25pF |
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2E |
: 250V |
D |
: ±0.5pF |
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2H |
: 500V |
= |
: Others |
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2J |
: 630V |
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] Capacity (electrolyte only) |
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2 |
2 |
2 |
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2200µF |
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s |
s |
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Indicates number of zeros after effective number. |
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2-digit effective number. |
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• Units: µF. |
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2 |
R |
2 |
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2.2µF |
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s |
s |
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1-digit effective number. |
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2-digit effective number, decimal point indicated by R. |
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• Units: µF. |
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] Capacity (except electrolyte) |
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2 |
2 |
2 |
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2200pF=0.0022µF |
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s |
s |
(More than 2) |
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Indicates number of zeros after effective number. |
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2-digit effective number. |
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• Units: pF. |
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2 |
2 |
1 |
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220pF |
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s |
s |
(0 or 1) |
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Indicates number of zeros after effective number. |
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2-digit effective number. |
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•Units: pF.
•When the dielectric strength is indicated in AC, "AC" is included after the dieelectric strength value.
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CE |
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04W |
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1H |
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2R2 |
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M |
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BP |
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CE |
: |
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0J |
: 6.3 |
V |
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F |
: ±1% |
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HS |
: |
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CA |
: |
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1A |
: 10 |
V |
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G |
: ±2% |
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BP |
: |
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CS |
: |
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1C |
: 16 |
V |
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J |
: ±5% |
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HR : |
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CQ |
: |
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1E |
: 25 |
V |
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K |
: ±10% |
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DL : |
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CK |
: |
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1V |
: 35 |
V |
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M |
: ±20% |
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HF |
: |
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CC |
: |
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1H |
: 50 |
V |
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Z |
: +80% |
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U |
: |
UL |
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CP |
: |
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2A |
: 100 V |
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−20% |
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C |
: |
CSA |
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CM : |
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2B |
: 125 V |
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P |
: +100% |
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W : |
UL-CSA |
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CF |
: |
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2C |
: 160 V |
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− |
0% |
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F |
: |
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CH |
: |
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2D |
: 200 V |
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C |
: ±0.25pF |
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2E |
: 250 V |
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D |
: ±0.5pF |
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2H |
: 500 V |
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= |
: |
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2J |
: 630 V |
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22 |
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2 |
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Ö |
2200µF |
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2R |
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2 |
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Ö |
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2.2µF |
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2 |
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0 |
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1 |
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2 |
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R |
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µF |
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µF |
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22 |
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2 |
|
Ö |
2200pF=0.0022µF |
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22 |
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1 |
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Ö |
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220pF |
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0 |
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0 |
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(0 |
2 |
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) |
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(0 |
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0 |
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1 |
) |
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2 |
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2 |
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pF |
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pF |
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AC
3
NOTE FOR SCHEMATIC DIAGRAM
WARNING:
Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
SYS-65HT/SYS-55HT/SC-C65/SC-A65/DSW-65
CAUTION:
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 460 kohms, the unit is defective.
WARNING:
DO NOT return the unit to the customer until the problem is located and corrected.
NOTICE:
ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM
ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD
EACH VOLTAGE AND CURRENT ARE MEASURED AT NO SIGNAL INPUT CONDITION.
CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
(1)Ω Ω M MΩ
(2)F F
4
5
LINE
INPUT
LINE
INPUT DIRECT MODE
|
|
|
|
NORMAL |
|
|
|
|
|
U203 |
|
LINE INPUT |
|
CROSSOVER |
VOL |
SW202 REVERSE PHASE |
POWER AMP SPEAKER |
|
U201 |
CONTROL |
|||
|
|
||||
|
|
|
|
DIRECT |
|
|
|
HPF |
|
MODE SW |
U203 |
|
|
|
|
||
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|
ALC |
|
|
DIRECT MODE |
|
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ATT |
|
+50.5dB 20V/4ohrm THD 0.7% (ALCON) |
|
|
|
|
|
||
(dB) |
|
|
|
|
at 55Hz |
40 |
|
+20dB |
|
|
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|
|
|
|
|
|
20 |
|
+4.34dB |
|
|
|
75mV |
|
|
|
|
|
0 |
|
|
|
|
|
-10 |
-1dB |
|
|
|
|
(dB) |
|
|
|
+27.2dB 20V/4ohrm THD 0.7% (ALCON) |
|
|
|
|
|
at 55Hz |
|
|
|
|
|
|
|
40 |
|
+4.34dB |
|
|
|
|
|
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|
|
20 |
|
|
+1.84dB |
|
|
|
|
|
|
|
|
830mV |
|
|
|
|
|
0 |
|
|
|
|
|
-10 |
-1dB |
|
|
|
|
65-A65/DSW-C65/SC-55HT/SC-65HT/SYS-SYS Section 65-DSW
DIAGRAM LEVEL / BLOCK
DSW-65 Section |
|
SYS-65HT/SYS-55HT/SC-C65/SC-A65/DSW-65 |
|
|
|
PRINTED WIRING BOARDS
AMP P.W.B. UNIT
6
DSW-65 Section |
|
SYS-65HT/SYS-55HT/SC-C65/SC-A65/DSW-65 |
|
|
|
PREAMP P.W.B. UNIT
POWER P.W.B UNIT.
7