Jvc HANC 250 Schematic
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Extracted text from Jvc HANC 250 Schematic (Ocr-read)
Page 1
1-2 (No.XC063) SECTION 1 PRECAUTION This service manual does not describe PRECAUTION. SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. SECTION 3 DISASSEMBLY R L e f e f g g a b c cd d b a h h Hanger (L)Hanger (R)Head band Hanger cover (L) Hanger cover (R) Ear pad holder (L) Ear pad (L) Ear pad holder (R)Ear pad (R) Microphone (L) Microphone (R) Housing (L)Housing (R) Seal Seal Lch boardRch board D D A AA A Speaker unit (L)Speaker unit (R) Baffle plate (L) Baffle plate (R) C CCC BB B
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(No.XC063)1-3 3.1 Removing the housings(L)/(R) (1) Remove the ear pads(L)/(R) and ear pad holders(L)/(R). * When attaching the ear pad holders, be careful as the left and right parts are different. (2) Remove the eight screws A attaching the housings(L)/(R). 3.2 Removing the Lch board / Rch board * Remove the housings(L)/(R). (1) Remove the four screws B attaching the Lch board / Rch board. (2) Unsolder the wires connected to each board, and then remove each wire. * When soldering the wires, be careful with the polarity of the wires. (Refer to the wiring diagram) 3.3 Removing the microphones(L)/(R) - Remove the housings(L)/(R) and the Lch board / Rch board. (1) Remove the four screws C attaching the speaker units(L)/(R), and then remove the speaker units(L)/(R). (2) Peel off the seal from the baffle plates(L)/(R), and then remove the microphones(L)/(R). 3.4 Removing the hangers(L)/(R) - Remove the housings(L)/(R). - Unsolder the wires connecting from the head band to each board. (1) Remove the four screws D attaching the hanger covers(L)/(R), and then remove the hanger covers(L)/(R). (2) Rotate the hanger 90 degrees. (It become the state of "Flat foldable" as shown in the figure below.) (3) The hanger can be removed by folding and pressing the hanger and head band as shown in the picture. (4) When attaching, perform the reverse procedure. Right Left Normal Flat foldable Head band Hanger