2.5. COAXIAL / OPTICAL 1 / OPTICAL 2
Note : The following checks can be performed when the MAIN PCB is removed.
(There is no need to use a wire extension jig.)
Check Soldering or replace device.
DIGITAL PCB
[IC32] 14pin : 3.3V
[JK14] ➡ [C324] ➡ [R359] ➡ [IC32] 1, 2, 3, 4pin ➡ [R355]
[JK13] 3pin : 3.3V, [IC32] 14pin : 3.3V
➡ [JK13] 1pin ➡ [R352] ➡ [IC32] 8, 9pin ➡ [R304]
[JK12] 3pin : 3.3V, [IC32] 14pin : 3.3V
➡ [JK12] 1pin ➡ [R351] ➡ [IC32] 12, 13pin ➡ [R306]
Check Soldering or replace device.
DIGITAL PCB
[IC31] 34pin : RESET = Hi
[IC34]
Check Soldering or replace device.
DIGITAL PCB
[R312] ➡ [IC33] 14pin
[R326] ➡ [IC33] 5pin
[R314] ➡ [IC33] 2pin
[IC33] 1pin : Lo
Check Soldering or replace device.
DIGITAL PCB
[R361] ➡ [IC34] 14pin
[R362] ➡ [IC34] 5pin
[R363] ➡ [IC34] 2pin
[IC34] 1pin : Low
N.G.
N.G.
N.G.
N.G.
Check the DIR input of S/PDIF signal.
DIGITAL PCB
* COAXIAL input
[IC31] 37pin
* OPTOCAL 1 input
[IC31] 4pin
* OPTOCAL 2 input
[IC31] 6pin
Check the I2S Signal output of DIR (1).
DIGITAL PCB
[IC31] 17pin : DIR_DATA, 18pin : DIR_LRCK, 19pin : DIR_BCK
Check the I2S Signal output of DIR. (2) [IC31] ➡ [IC33]
DIGITAL PCB
[IC33] 12pin : DIR_DATA (DIR/USBA_DATA)*
[IC33] 7pin : DIR_LRCK (DIR/USBA_LRCK)*
[IC33] 4pin : DIR_BCK (DIR/USBA_SCLK)*
* (Signal Name on Circuit Diagram)
Check the I2S Signal output of DIR. (3) ➡ [IC34]
DIGITAL PCB
[IC34] 12pin : DIR_DATA (DAC_DATA)*
[IC34] 7pin : DIR_LRCK (DAC_LRCK)*
[IC34] 4pin : DIR_BCK (DAC_SCLK)*
* (Signal Name on Circuit Diagram)
O.K.
O.K.
O.K.
O.K.
Check Soldering or replace device.
DIGITAL PCB
➡
MAIN (DAC) PCB
[R365] ➡ [R347] ➡ [IC44] 2pin ➡ [IC44] 7pin ➡ [WF41] 6pin
➡
[WF51] 6pin
➡
[R451]
[R366] ➡ [R346] ➡ [IC44] 3pin ➡ [IC44] 6pin ➡ [WF41] 5pin
➡
[WF51] 5pin
➡
[R452]
[R367] ➡ [R370] ➡ [IC45] 2pin ➡ [IC45] 7pin ➡ [WF41] 4pin
➡
[WF51] 4pin
➡
[R453]
N.G.
Check the I2S Signal output of DIR. (4) ➡ [IC52] (DAC)
MAIN (DAC) PCB
[IC52] 25pin : DATA
[IC52] 26pin : LRCK
[IC52] 27pin : SCLK
O.K.
Check Soldering or replace device.
MAIN (DAC) PCB
➡
MAIN PCB
[IC52] 14pin : Lch (-) ➡ Lch I/V conversion circuit
[IC52] 13pin : Lch (+) ➡ Lch I/V conversion circuit
➡ [L503] ➡ [BN66] 9pin
➡
[CN66] 9pin
[IC52] 10pin : Rch (-) ➡ Lch I/V conversion circuit
[IC52] 9pin : Rch (+) ➡ Lch I/V conversion circuit
➡ [L504] ➡ [BN66] 7pin
➡
[CN66] 7pin
N.G.
Check the Audio Signal of DAC Out ➡ ANALOG / DIGITAL
Selector.
MAIN PCB
[RL62] 3pin (Lch)
[RL62] 6pin(Rch)
TO 2.1.COMMON
O.K.
43