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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
Pin No. 36 37 38 39, 40 41 42
Pin Name TES HFL SLOF CV�, CV+ RFSM RFS�
I/O O O I I O I
Description Pin from which TES signal is output to DSP. �High Frequency Level� is used to judge whether the main beam position is on top of bit or on top of mirror. Sled servo off control input pin. CLV error signal input pin from DSP. RF output pin. RF gain setting and EFM signal 3T compensation constant setting pin together with RFSM pin.
43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
SLC SLI DGND FSC TBC NC DEF CLK CL DAT CE DRF FSS VCC2 REFI VR LF2 PH1 BH1 LDD LDS VCC1
O I � O I � O I I I I O I � � O I I I O I �
�Slice Level Control� is the output pin which controls the RF signal data slice level by DSP. Input pin which control the data slice level by the DSP. Digital system GND. Output pin to which external focus search smoothing capacitor is connected. �Tracking Balance Control� EF balance variable range setting pin. No connection. Disc defect detector output pin. Reference clock input pin. 4.23 MHz of the DSP is input. Microprocessor command clock input pin. Microprocessor command data input pin. Microprocessor command chip enable input pin. �Detect RF� RF level detector output. �Focus Search Select� focus search mode (± search/+ search) select pin. Servo system and digital system Vcc pin. Pin to which external bypass capacitor for reference voltage is connected. Reference voltage output pin. Disc defect detector time constant setting pin. Pin to which external capacitor for RF signal peak holding is connected. Pin to which external capacitor for RF signal bottom holding is connected. APC circuit output pin. APC circuit input pin. RF system Vcc pin.
44
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