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The delivery of this manual was very fast, less than 8 hours. The manual is very clear and concise, and helped a great deal in the repair and final setup of the Hitachi HMA-G2 Amplifier.
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Great service. The manual was exactly what I was looking for: schematic + layout. I managed to fix the player. Highly recommended!
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At $5,00 certainly good bang for your buck. Includes electric schematics as well as exploded parts view + parts list for reordering. Unfortunately no details on the PCB contents or working, but then again, this is not overly complex. Best bonus: this manual does contain the heavily searched for LED error codes as well as descriptions for test operation. Haven't gotten around to fixing the machine yet, one thing the manual won't do for you is getting it out of the kitchen assembly :-(
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It`s not your fault tear down is rather incomplete. It doesn`t have complete instructions as to deconstruction for repair.
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THANK YOU FOR A GOOD TRANSACTION, NICE COPY, CLEAR
�
Good Example
VOLT/DIV : 100mV TIME/DIV : 1ms 100mV 0V
�
Incorrect Examples (Fundamental wave appears)
VOLT/DIV : 1V TIME/DIV : 2ms 0V
low tracking gain
�
Incorrent Examples (DC level changes more than on adjusted waveform)
VOLT/DIV : 100mV TIME/DIV : 2ms
VOLT/DIV : 1V TIME/DIV : 2ms 0V
200mV
high tracking gain (high fundamental wave than for low gain)
0V
low focus gain
[MAIN BOARD]
VOLT/DIV : 100mV TIME/DIV : 2ms
TP(FE)
75mV 0V
TP(VC)
high focus gain
TP(TE)
5. 6. 7.
Connect an oscilloscope between TP (TE) and TP (VC). Insert disc (YEDS-18) and press the CD ^ button. Check that the waveform is as shown in the figure below. (tracking waveform)
VOLT/DIV : 1V TIME/DIV : 2ms
TP(RF)
Osilloscope (DC range)
0V
TP(FE) TP(TE) TP(VC)
+ �
� 16 �
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