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Marantz SR6003 - Speaker Placement and Basic Connections

Marantz SR6003
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11
5. SYSTEM ERROR
Check 1
Indication of abnormalities with the EEP-ROM
(INPUT PWB / IC12) Interface
This indicates a communication error wherein the ACK
will not return for 2 seconds or more while the system
is in communication with the EEP-ROM (INPUT PWB /
IC12).
- Message on FL display
Points to be checked
1) The IIC Clock Line (IC11/116 pin – IC12/6 pin) is
normal when the power is ON.
2) The IIC Data Line (IC11/117 pin – IC12 / 5 pin) is
normal when the power is ON.
3) The IC12/8 pin is supplied with VCC +3.3V.
4) If none of the above is negative, the IC12 may be
having a defect.
Check 2
+5V supply Error Detection (_5V DOWN)
When the power is turned on or while the unit is in normal
operation, an abnormality occurs with the +5V power
supply, and the +5V power into the CPU 137 pin cannot
be detected.
Detection of DC on Power Amp Output
(_P AMP FAIL)
When the power is turned on or while the unit is in normal
operation, an abnormality occurs with the Power Amp,
and DC is detected on the CPU 121 pin.
Detection of abnormal heat of Power Amp (_P AMP FAIL)
The Power Amp is overheated while in normal operation,
with an abnormality detected on the CPU 121 pin.
Detection of Overcurrent below 200msec on Power Amp
(_P CUR FAIL)
When the product is in normal operation, an abnormality
occurs with the POWER AMP, and an overcurrent of less
than 200msec is detected on the CPU 120 pin.
When errors like the above abnormalities are detected,
the software automatically puts the product into STANDBY
mode, with the STANDBY LED flickering approximately
every 500msec.
NOTE : The product can recover from the SYSTEM
ERROR when the user turns on and then off
the STANDBY. However, once any of the above
errors is redetected, the product goes into
STANDBY again.
Points to be checked :
1) The CN97 (INPUT PWB) 1 & 2 pins are supplied with
+5V when the power is ON
2) The Microprocessor 121pin (Power Amp Fail) is
C H E C K E 2 P I F
C H E C K P O W 5
P R O T E C T
Less than 200msec
Power Amp Fail
SPK Relay Relay off
FL Display 2 sec
"PROTECT" Display on FL
STANDBY
STANDBY LED
STANDBY LED OFF
0.5sec blinking
More than 200msec
Power Amp Fail
SPK Relay Relay off
STANDBY
STANDBY LED
STANDBY LED OFF
0.125sec blinking
Power Line Fail
SPK Relay Relay off
STANDBY
STANDBY LED
STANDBY LED OFF
0.125sec blinking
C H E C K D S P R O M
5. SYSTEM ERROR
Check 1
EEP-ROM (INPUT PWB / IC12) Interface
異常検出
EEP-ROM (INPUT PWB / IC12)との通信でACKが帰っ
てこない状態(通信エラー)が約2秒以上生じた場合
FL
Display
に下記の様な表示がされます。
- FL DisplayへのError表示
回路上の確認箇所
Power ON時にIIC Clock Line (IC11/116pin - IC12 /
6pin)
が正常なのを確認する。
Power ON時にIIC Data Line (IC11/117pin - IC12 /
5pin)
が正常なのを確認する。
IC12 / 8pinVCC (+3.3V)が供給されていることを
確認する。
上記の①−③に不具合が生じていない場合はIC12
不良が考えられます。
Check 2
+5V Supp
ly異常検出 (_5V DOWN)
電源ON時又は通常動作時に+5V電源に異常が発生し、CPU
137pinに入力される+5Vの検出が出来なかった(出来な
くなった)場合。
Power Amp出力のDC検出 (_P AMP FAIL)
電源ON時又は通常動作時にPower Ampに異常が発生
し、
CPU121pinPower Amp出力のDC検出がされた場
Power Ampの異常温度検出 (_P AMP FAIL)
通常動作時にPower Ampの異常な温度上昇が発生し、CPU
121pinで異常が検出がされた場合。
Power Amp200msec未満の過電流検出
(_P CUR FAIL)
通常動作時にPower Ampに異常が発生し、CPU120pin
Power Ampの過電流が200msec未満で検出された場合。
上記の様な異常検出がされた場合は、
Softwareは自動的に製品
STANDBY状態にして、STANDBY LEDを約500msec間隔
で点滅させます。
復帰操作 :
このSystem ErrorUserSTANDBY ON/OFF
作を行うことで通常動作に復帰しますが、上記の異
常を再検出することで製品は再び
System Errorとな
ります。
回路上の確認箇所
電源ON時にCN97 (INPUT PWB) 1, 2pin+5Vが供
給されていることを確認する。
電源ON時にマイコンの121pin (Power Amp Fail)
"H"
になっていることを確認する。
(121pinが電源ONしてから2秒以上"L"状態が継続し
ている場合は
POWER AMP回路に異常が発生してい
)

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