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This is exactly the thing you need to service this box. The manual is complete and the quality of the scan is good. I recommend this!
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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.
1-3. Self Diagnostics
6. The switches S2 and S4 can be diagnosed as follows. (1) Press the [Return] key once and confirm that the following message appears on display. Then set the switches S2 and S4 as shown below.
BKP-7933 IF-689 Board Check START !! S-BUS COMMUNICATION SYSTEM -----------------------M27C4002(IC6,7 EPROM) ----------------------------STK12C60-S45(IC501,502,503,504 NVRAM) ------------CY7C109-20VC(IC8,9,10,11 SRAM) -------------------HN58257AT(IC28,29,30,31 EEPROM) ------------------IDT7133/7144SA55J(IC301,302 D.P.RAM) Rport ---------------------------------------------------------UPD71055 (IC42,43 PIO) MODE SW CHECK-A(S2,S4) ----OK OK OK OK OK OK **
12345678
(2) (3)
Pressing the [Return] key again starts diagnostics, and the result is displayed. Press the [Return] key once and confirm that the message �MODE SW CHECK-B (S2, S4)� appears on display. Then set the switches S2 and S4 as shown below.
12345678
(4) Pressing the [Return] key again starts diagnostics, and the result is displayed. 7. The switch S12 can be diagnosed as follows. (1) Confirm that the message �S-BUS NO CHECK-A (S12)� appears. Set the switches in the same manner as step 6 -(1) and execute diagnostics. (2) Confirm that the message �S-BUS NO CHECK-B (S12)� appears. Set the switches in the same manner as step 6 -(3) and execute diagnostics. 8. The switch S3 can be diagnosed as follows. (1) Press the [Return] key once and confirm that the message �CNU GP NO CHECK-A (S3)� appears on display. Then set the switch S3 as shown below. S3 (CNU GP No) � 0 (2) Pressing the [Return] key again starts diagnostics, and the result is displayed. (3) Press the [Return] key once and confirm that the message �CNU GP NO CHECK-B (S3)� appears on display. Then set the switch S3 as shown below. S3 (CNU GP No) � F (4) Pressing the [Return] key again starts diagnostics, and the result is displayed.
1-4 (E)
BKP-7933
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