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The manual was of good quality with high resolution schematic diagrams.
The manual was very clear and contained all the information I was looking for. My dishwasher is working again because of this servicemanual!
Quality scan, great manual. I solved my problem with this manual.
The AKAI 1720 model reel to reel tape recorder described in this Manual is quite an old unit - circa late 1960's. As a consequence, the description of the mechanical details - and adjustments thereof - is quite critical. The manual does this quite well. The schematics are also well presented and have detailed PCB overlays. Probably the only negative is that some half-tone detail has been lost from the original manual as it has been scanned in simple B&W.
Perfect source for service manuals: fast and professional transaction; high quality, perfect readable and largely scaleable PDF; complete schemes, diagrams and spare part list. Tnx a lot, cu again!!!!
SECTION 1 DISASSEMBLY
NOTE : This service manual has indicated only the item different from GC-X1E-S No.86572.
1.3.2 Disassembly method ( I )
STEP 1 2 PART NAME FRONT CASE REAR CASE OPERATION UNIT FIG. NO. POINT Remove screws 2 (115), 3 (156), 4 (157), 1 (154) Remove the Connector r MAIN CN4001 OPERATION UNIT Remove the TOP COVER 3 STROBE BOARD ASSEMBLY Fig 1-3-1 Remove the Connector n MAIN CN6601 STROBE CN6501 Remove the Connector p MAIN CN5501 JACK CN101 m LCD MODULE (BL) JACK CN701 Remove screws 3 (116) 2 (115) Remove screw 1 (114) Remove screws 2 (114) e (SD3), f (SD4), g (SD5) Note 1 Note 3 Note 1 Note 2 Note 1 NOTE
JACK BOARD ASSEMBLY
Remove the Connector Remove screws k MAIN CN3002 LCD MODULE (LCD) 2 (114) Fig 1-3-2 Remove from the Frame Assy Remove from the LCD Holder Remove the Connector h MAIN CN501 OP UNIT z MAIN CN2501 MIC c MAIN CN3001 MON/REG CN9001 d MON/REG TL9001 Frame Assy Remove the PWB HOLDER Remove from the Frame Assy
MAIN BOARD ASSEMBLY
MONI/REG BOARD ASSEMBLY 6 OP UNIT Fig 1-3-3
d (SD1) Remove screws 2 (114) Remove screws 3 (117)
CONNEC- NO.OF TOR/HL PINS c d e f g h j k m n p q r s t u v w x z 80 1 1 1 1 22 2 24 2 14 38 28 12 1 1 1 1 1 1 2 MAIN Board CN3001
CONNECTION MONI/REG Board CN9001 MAIN FRAME (RED) MAIN FRAME (BROWN) MONI/REG Board J9001 (BLACK) MONI/REG Board J9002 (RED) OP UNIT OP UNIT LCD MODULE (LCD) LCD MODULE (BL) STROBE Board CN6501 JACK Board CN101 CCD Board CN1001 OPERATION UNIT STROBE Board J6501 (Through hole) STROBE Board J6502 (Through hole) STROBE Board J6503 (Through hole) STROBE Board J6504 (Through hole) STROBE Board J6505 (Through hole) STROBE Board J6506 (Through hole) MIC
Note 1 Destination of connectors. Note: Three kinds of double-arrows in connection tables
respectively show kinds of connector/wires. : Board to Board connector : Flat wire : Wire
MONI/REG Board TL9001 JACK Board TP3 JACK Board TP2 JACK Board TP1 MAIN Board CN501 MAIN Board CN502 MAIN Board CN3002 JACK Board CN701 MAIN Board CN6601 MAIN Board CN5501 MAIN Board CN2001 MAIN Board CN4001 STROBE UNIT WIRE (ORANGE) STROBE UNIT WIRE (BROWN) STROBE UNIT WIRE (RED) STROBE UNIT WIRE (BLACK) STROBE UNIT WIRE (Red, Thin wire) STROBE UNIT WIRE (BLACK, Thin wire) MAIN CN2501
Be careful from electric shock hazard because the capacitor (C6512) for the strobe is exposed. Be sure to positively discharge the capacitor if it is energized by short-circuiting a resistor (10 - 22 k ) connected at both capacitor terminals. Please be very careful when doing this job.
Note 3 LCD panel is fixed by four hooks of backlight. Insert LCD panel in a hook firmly.
no slippege 4 sprts locked
Note 5 Stick to let it pass between LEDs.Stick to come out on the left of the sheet metal of a video terminal.