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Top class product, I printed it out on A3 paper and it is clear and very easy to follow.
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is part of the manual is very useful for repairing
Here are circuit diagrams
if there is damage, I recommend using this part of the
a complete list of circuit boards and components
GR-408
Mark No. Description Part No. Mark No. Description Part No.
5. PCB PARTS LIST
NOTES:
� Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. � The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. � When ordering resistors, first convert resistance values into code form as shown in the following examples.
47k � � 47 � 103 � 473 ........................................................ RD1/4PU 4 7 3 J
Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%, and K=10%). 560 � � 56 � 101 � 561 ........................................................ RD1/4PU 5 6 1 J
0.5 � � R50 ..................................................................................... RN2H R 5 0 K 1� � 1R0 ..................................................................................... RS1P 1 R 0 K Ex.2 When there are 3 effective digits (such as in high precision metal film resistors). 5.62k � � 562 � 101 � 5621 ...................................................... RN1/4PC 5 6 2 1 F
Mark No.
Description
Part No.
GR408-A ����� ����� ����� �����
LIST OF ASSEMBLIES
NSP NSP NSP NSP MAIN BOARD ASSY EQ PCB POWER PCB EQ ON/OFF PCB JACK PCB
A MAIN BOARD ASSY
SEMICONDUCTORS
IC2,IC3 AUDIO IC IC1 IC LA6458SS LED1 LED M5229P 00206458-040 01912000-110
SWITCHES
SW SK-22F03G5 SW PBS-42H03-F18 02012205-110 02014218-110
RESISTOR
VR1-VR14 SLIDE VR. 01110203-230
OTHERS
T1 TRANSFORMER EI-35 01804083-520
6. ADJUSTMENT
There is no information to be shown in this chapter.
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