Onkyo TX-DS494 Service Manual page 7

EXPLODED VIEW PARTS LIST-2
REF. NO. PART NO.
P901 253279HIT AS-UC-2#18 or
253280VOL AS-UC-2#18 <DD>
253306VOL or AS CEE-2 or
253193HIT AS-CEE <PP, GT>
253197HIT or AS-SAA or
253307VOL AS-SAA <PA>
253233KAW or AS-CEE-2 or
253306VOL AS-CEE-2 <WT>
253267KAW, AS-CCEE,
253285HIT or AS-CCEE or
253286VOL AS-CCEE <WR>
Q523, Q524 , 2202253 or 2SC4467-O or
*
2202254 or 2SC4467-Y or
Q1512 *
2202256 or 2SC4467-P or
Q623, Q624 *
2203042 or 2SC5197-R or
*
2203043 or 2SC5197-O or
*
2203502 or KTD718-R or
*
2203503 KTD718-O, Transistor
*
Q525, Q526 , 2202243 or 2SA1694-O or
*
2202244 or 2SA1694-Y or
Q1513
*
2202246 or 2SA1694-P or
Q625, Q626 *
2203032 or 2SA1940-R or
*
2203033 or 2SA1940-O or
*
2203492 or KTB688-R or
*
2203493 KTB688-O, Transistor
*
Q517, Q518 2212654 or 2SC3421-Y or
*
2212653 2SC3421-O, Transistor
*
Q921 222780125 78M12HF, IC
Q922 222790125 79M12HF, IC
Q933 222780055 78M05HF, IC
T901 2301438 NPT-1384D, Power transformer
<DD, 490>
2301440 NPT-1384P, Power transformer
<PP, PA>
2301441 NPT-1384DG, Power transformer
<WT, WR, GT>
CAUTON : Replacement of the transistor of mark * ,if necessary,
must be made from the same beta group(HFE) as the
original type.
[NOTE]
<B> : Black model only
<DD> : 120V model only
<S> : Silver model only
<DT> : Asian model only for 120V
<G> : Golden model only
<GT> : Asian model only for 230V
<PP> : European model only
<WT> : World wide model only
<WR> : Chinese model only
<494> : TX-DS494 only
<490> : HT-R490 only
DESCRIPTION REF. NO.
U1
U2
U3
U4
U5
U6
U7
U8
U9
U10
PART NO. DESCRIPTION
1A865589-2A NAAF-6789-2A, Front channel power amplifier PC board ass'y <DD>
1A865589-2B NAAF-6789-2B, Front channel power amplifier PC board ass'y <PP,PA, GT>
1A865589-2C NAAF-6789-2C, Front channel power amplifier PC board ass'y <490>
1A865589-2D NAAF-6789-2D, Front channel power amplifier PC board ass'y <WT, WR>
1A865590-2A NAAF-6790-2A, Surround channel power amplifier PC board ass'y <DD>
1A865590-2B NAAF-6790-2B, Surround channel power amplifier PC board ass'y <PP,PA, GT>
1A865590-2C NAAF-6790-2C, Surround channel power amplifier PC board ass'y <490>
1A865590-2D NAAF-6790-2D, Surround channel power amplifier PC board ass'y <WT, WR>
1A865591-2A NAETC-6791-2A, Front speaker terminal PC board ass'y <DD>
1A865591-2B NAETC-6791-2B, Front speaker terminal PC board ass'y <PP,PA, GT>
1A865591-2C NAETC-6791-2C, Front speaker terminal PC board ass'y <490>
1A865591-2D NAETC-6791-2D, Front speaker terminal PC board ass'y <WT, WR>
1A865592-2A NAETC-6792-2A, Surround speaker terminal PC board ass'y <DD>
1A865592-2B NAETC-6792-2B, Surround speaker terminal PC board ass'y <PP,PA, GT>
1A865592-2C NAETC-6792-2C, Surround speaker terminal PC board ass'y <490>
1A865592-2D NAETC-6792-2D, Surround speaker terminal PC board ass'y <WT, WR>
1A865594-2A NAETC-6794-2A, Holder PC board ass'y <DD>
1A865594-2B NAETC-6794-2B, Holder PC board ass'y <PP,PA, GT>
1A865594-2C NAETC-6794-2C, Holder PC board ass'y <490>
1A865594-2D NAETC-6794-2D, Holder PC board ass'y <WT, WR>
1A865595-2A NAETC-6795-2A, Secondary terminal PC board ass'y <DD>
1A865595-2B NAETC-6795-2B, Secondary terminal PC board ass'y <PP,PA, GT>
1A865595-2C NAETC-6795-2C, Secondary terminal PC board ass'y <490>
1A865595-2D NAETC-6795-2D, Secondary terminal PC board ass'y <WT, WR>
1A899543-1A NADIS-7043-1A, Display circuit PC board ass'y <DD>
1A899543-1B NADIS-7043-1B, Display circuit PC board ass'y <PP>
1A899543-1C NADIS-7043-1C, Display circuit PC board ass'y <PA,GT>
1A899543-1D NADIS-7043-1D, Display circuit PC board ass'y <WT,WR>
1A899543-1F NADIS-7043-1F, Display circuit PC board ass'y <490>
1A899544-1A NAAR-7044-1A, Main PC board ass'y <DD>
1A899544-1B NAAR-7044-1B, Main PC board ass'y <PP>
1A899544-1C NAAR-7044-1C, Main PC board ass'y <PA,GT>
1A899544-1D NAAR-7044-1D, Main PC board ass'y <WT,WR>
1A899544-1F NAAR-7044-1F, Main PC board ass'y <490>
1A899545-1A NAETC-7045-1A, Head phone jack PC board ass'y <DD>
1A899545-1B NAETC-7045-1B, Head phone jack PC board ass'y <PP>
1A899545-1C NAETC-7045-1C, Head phone jack PC board ass'y <PA,GT>
1A899545-1D NAETC-7045-1D, Head phone jack PC board ass'y <WT,WR>
1A899545-1F NAETC-7045-1F, Head phone jack PC board ass'y <490>
1A899546-1A NAETC-7046-1A, Master volume PC board ass'y <DD>
1A899546-1B NAETC-7046-1B, Master volume PC board ass'y <PP>
1A899546-1C NAETC-7046-1C, Master volume PC board ass'y <PA,GT>
1A899546-1D NAETC-7046-1D, Master volume PC board ass'y <WT,WR>
1A899546-1F NAETC-7046-1F, Master volume PC board ass'y <490>
NOTE: THE COMPONENTS IDENTIFIED BY MARK
ARE CRITICAL FOR RISK OF FIRE AND
ELECTRIC SHOCK. REPLACE ONLY WITH
PART NUMBER SPECIFIED.
TX-DS494/HT-R490