Kenwood TH-235A Service Manual

144MHz FM TRANSCEIVER
TH-235A/E KENWOOD
TH-234
(K29-5130-03)
Knob (ENCODER) DESTINATION LIST........ seususnsesseasscsesnceasacnenesnseeaens 2
(K29-5 130-03) DISASSEMBLY FOR REPAIR ...............csscs0200e 2000+ 3
CIRCUIT DESCRIPTION ...........2-.cesescesceseseeseeseeeoeee 4
Front glass SEMICONDUCTOR DATA ........-..cs.cccsseseceseesses eee 14
(810-1263-04) DESCRIPTION OF COMPONENTS ..........0:-00+ 16
Antenna* ————aed PARTS LIST ...csscccsccsscecesscosscesssveecsesssscsseessvesseeesores 18
EXPLODED VIEW.........ccccesssscscesoccssscssserorsessens vores 23
PACKING .....ccccsscscssssssssscseseccesseccorersrscseorersveeeseeeoe 24
TERMINAL FUNCTION ............0:ecscsescescseeseeousere 27
ADJUSTMENT .........sececccscccccescocevscsecseseeesessnsnsneees 28
PC BOARD VIEWS
Knob (PTT) i CONTROL UNIT (X57-5260-XX) ........csceen sees 35
(K29-5131-03)
TX-RX UNIT (X57-5260-XX) 0... eeeesecesessene cee 41
SCHEMATIC DIAGRAM.............c.csccscssoceceseessecees 45
BLOCK DIAGRAM. ..........0.c.sccsecececsscsscesessesseeescoses 49
LEVEL DIAGRAM.............ccssesecesssescecseseseesseesssoees 51
OPTIONAL ACCESSORIES .
a TSU-8 (CTCSS UNIT) .u....c.ceececccesessececeseeceencenss 52
KEY TOP SMC-32 (SPEAKER MICROPHONE)............--: 52
(A02-2010-03) : FRONT MICROPHONE) ........0:.cccoosssovessessssesesnenveesenamses 52
Le 0 (A02-2012-12) : REAR EMC-3 (CLIP MICROPHONE WITH EARPHONE)52
PB-36 (STANDARD BATTERY PACK) .........-- 52
PB-37 (HIGHT POWER BATTERY PACK)....-.. 52
Battery" BT-10 (BATTERY CASE) ..........ccsccsccesesssesncees 52
BC-17 (WALL CHARGER)............:.cccceceseesncee 52
KSC-8A (COMPACT CHARGER)...............0.-+- 52
KSC-14 (RAPID CHARGER) ..............cc0eses.0+ 52
PG-2W (DC CABLE) .0......ccccccccccceccsssesessseseeneeeee 52
PG-3J (FILTERED CIGARETTE LIGHTER CABL-E)52
PHOTO is TH-235A WR-2 (WATER-RESISTANT BAG)..........-+0. ~-- 52
SPECIFICATIONS. .......cccssececessssccccscsscsecsesseseeenen eee 53
"Refer to parts list on page 18. ;
TH-234 is for the exclusive use of the Republic of Indonesia.