Read Panasonic SB-PF870GC / SB-PC870GC / SB-PS870GC / SB-WVK870GC Service Manual online
5.3. For SB-WVK870
SB-PF870GC / SB-PC870GC / SB-PS870GC / SB-WVK870GC
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Click on the first or last page to see other SB-PF870GC / SB-PC870GC / SB-PS870GC / SB-WVK870GC service manuals if exist.