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For Europe model

SERVICE MANUAL Ver. 3

MODEL DHT-500SD Please refer to the
MODIFICATION NOTICE.

HOME THEATER SYSTEM

HOME THEATER SYSTEM (DHT-500SD) consists of DVD SURROUND
RECEIVER (ADV-500SD) and SPEAKER SYSTEM (SYS-500SD).

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.

TOKYO, JAPAN
Denon Brand Company, D&M Holdings Inc.

X0198V.03 DE/CDM 0607
DHT-500SD

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.

LASER RADIATION
Do not stare into beam or view directly with optical instruments, class 3A laser product.

CAUTION Please heed the points listed below during servicing and inspection.

Heed the cautions! Inspect for safety after servicing!
Spots requiring particular attention when servicing, such as Check that all screws, parts and wires removed or discon-
the cabinet, parts, chassis, etc., have cautions indicated on nected for servicing have been put back in their original posi-
labels or seals. Be sure to heed these cautions and the cau- tions, inspect that no parts around the area that has been
tions indicated in the handling instructions. serviced have been negatively affected, conduct an insulation
check on the external metal connectors and between the
Caution concerning electric shock! blades of the power plug, and otherwise check that safety is
ensured.
(1) An AC voltage is impressed on this set, so touching inter-
nal metal parts when the set is energized could cause
(Insulation check procedure)
electric shock. Take care to avoid electric shock, by for ex-
Unplug the power cord from the power outlet, disconnect the
ample using an isolating transformer and gloves when
antenna, plugs, etc., and turn the power switch on. Using a
servicing while the set is energized, unplugging the power
500V insulation resistance tester, check that the insulation re-
cord when replacing parts, etc.
sistance between the terminals of the power plug and the ex-
(2)There are high voltage parts inside. Handle with extra care ternally exposed metal parts (antenna terminal, headphones
when the set is energized. terminal, microphone terminal, input terminal, etc.) is 1M or
greater. If it is less, the set must be inspected and repaired.
Caution concerning disassembly and assembly!
Though great care is taken when manufacturing parts from
sheet metal, there may in some rare cases be burrs on the
edges of parts which could cause injury if fingers are moved CAUTION Concerning important safety parts
across them. Use gloves to protect your hands.
Many of the electric and structural parts used in the set have
Only use designated parts! special safety properties. In most cases these properties are
difficult to distinguish by sight, and using replacement parts
The set's parts have specific safety properties (fire resis- with higher ratings (rated power and withstand voltage) does
tance, voltage resistance, etc.). For replacement parts, be not necessarily guarantee that safety performance will be pre-
sure to use parts which have the same properties. In particu- served. Parts with safety properties are indicated as shown
lar, for the important safety parts that are marked ! on wiring below on the wiring diagrams and parts lists is this service
diagrams and parts lists, be sure to use the designated parts. manual. Be sure to replace them with parts with the designat-
ed part number.
Be sure to mount parts and arrange the
wires as they were originally! (1) Schematic diagrams ... Indicated by the ! mark.
For safety reasons, some parts use tape, tubes or other insu- (2) Parts lists ... Indicated by the ! mark.
lating materials, and some parts are mounted away from the
Using parts other than the designated parts
surface of printed circuit boards. Care is also taken with the
could result in electric shock, fires or other
positions of the wires inside and clamps are used to keep
dangerous situations.
wires away from heating and high voltage parts, so be sure to
set everything back as it was originally.

2
BLOCK DIAGRAM
MAIN P.W.B. UNIT ASS'Y FRONT P.W.B. UNIT ASS'Y

VFD P.W.B.

MECHANISM(DVD LOADER:RL-874) P.W.B. UNIT ASS'Y

ST92F150CVT1

HEAD PHONE P.W.B.
FROM DVD LOADER CONNECTING P.W.B.
(TO VFD P.W.B. and Main P.W.B. UNIT ASS'Y)

AMP P.W.B. UNIT ASS'Y
3

DSP P.W.B.
TO AMP P.W.B. UNIT ASS'Y
UNIT ASS'Y

TO CONNECTING P.W.B.

DHT-500SD
SMPS P.W.B. UNIT ASS'Y
DHT-500SD
LEVEL DIAGRAM

4
DHT-500SD

SEMICONDUCTORS /
Only major semiconductors are shown, general semiconductors etc. are omitted to list.

IC's
Note: Abbreviation ahead of IC No. indicates the name of P.W.B., etc.
): IC No.
AMP: AMP P.W.B. ME: MECHANISM P.W.B. FR: FRONT P.W.B. SM: SMPS P.W.B.
MA: MAIN P.W.B. DS: DSP P.W.B.
ES6128F (ME: U9)

PCLK2XSCN
PCLKQSCN
HIOCS16#
HCS3FX#
HCS1FX#

HSYNC#
VSYNC#
HIORDY

HWRQ#
HRDQ#

ADVEE
HRST#
HWR#
HRD#

DCLK
YUV7
YUV6
YUV5

YUV4
YUV3
YUV2
YUV1
YUV0
HD15
HD14

HD13
HD12
HD11
HD10
HIRQ

VCC

VCC
VSS

VEE
VSS

VSS

VEE
VSS

VSS

VSS
HD9
HD8
HD7

HD6
HD5
HD4
HD3
HD2
HD1
HD0
HA1
HA0
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VEE 157 104 VEE
HA2 158 103 VSS
VEE 159 102 DSCK
AUX[0] 160 101 DQM
AUX[1] 161 100 DCS0#
AUX[2] 162 99 VEE
VSS 163 98 VSS
VEE 164 97 DCS1#
AUX[3] 165 96 DB15
AUX[4] 166 95 DB14
AUX[5] 167 94 DB13
AUX[6] 168 93 DB12
AUX[7] 169 92 VEE
LOE# 170 91 VSS
VSS 171 90 DB11
VCC 172 89 DB10
LCS0# 173 88 DB9
LCS1# 174 87 DB8
LCS2# 175 86 DB7
LCS3# 176 85 DB6
VSS 177 84 VSS
LD0 178 83 VCC
LD1 179 82 DB5
LD2 180 81 DB4
LD3 181 80 DB3
LD4 182 79 DB2
VEE 183 78 DB1
VSS 184 77 DB0
LD5 185 76 VSS
LD6 186 75 VEE
LD7 187 74 DMBS1
LD8 188 73 DMBS0
LD9 189 72 DRAS#
LD10 190 71 DWE#
LD11 191 70 DSCK_EN
VSS 192 69 DCAS#
VEE 193 68 VEE
LD12 194 67 VSS
LD13 195 66 DMA11
LD14 196 65 DMA10
LD15 197 64 DMA9
LWRLL# 198 63 DMA8
LWRHL# 199 62 DMA7
VSS 200 61 DMA6
VEE 201 60 VSS
CAMIN0 202 59 VEE
CAMIN1 203 58 DMA5
LA0 204 57 DMA4
LA1 205 56 DMA3
LA2 206 55 DMA2
LA3 207 54 DMA1
VSS 208 53 DMA0
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