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XR-4880 3 7 63 1515 0 SERVICE MANUAL AEP Model UK Model Photo: XR-4880 Model Name Using Similar Mechanism XR-C6100R Tape Transport Mechanism Type MG-25F-136 SPECIFICATIONS L 13942296513 FM/MW/LW CASSETTE CAR STEREO u163 MICROFILM http://www.xiaoyu163.com...
http://www.xiaoyu163.com 3 7 63 1515 0 TABLE OF CONTENTS GENERAL Location of Controls ............3 Resetting the Unit ............4 Detaching the Front Panel ..........4 Setting the Clock ............. 4 Installation ............... 5 Connections ..............6 DISASSEMBLY ............8 ASSEMBLY OF MECHANISM DECK ....
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http://www.xiaoyu163.com SECTION 1 This section is extracted from instruction manual. GENERAL 3 7 63 1515 0 L 13942296513 u163 – 3 – http://www.xiaoyu163.com...
http://www.xiaoyu163.com SECTION 2 DISASSEMBLY 3 7 63 1515 0 Note: Follow the disassembly procedure in the numerical order given. FRONT PANEL ASS’Y 1 Push the button (release). 2 Remove the front panel ass’y to the direction of the arrow A . L 13942296513 COVER ASS’Y 3 Cover ass’y...
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http://www.xiaoyu163.com 3 7 63 1515 0 SUB PANEL, MECHANISM DECK (MG-25F-136) 5 Screw (PTT2.6 × 6) 3 Connector (CN351) 6 Mechanism deck (MG-25F-136) 4 Flexible flat cable (CN301) 2 Sub panel 1 Three screws (PTT2.6 × 8) L 13942296513 1 Three screws (PTT2.6 ×...
http://www.xiaoyu163.com SECTION 3 3 7 63 1515 0 ASSEMBLY OF MECHANISM DECK Note: Follow the assembly procedure in the numerical order given. 5 Fit projection on C part. HOUSING 7 Holder the hanger by bending the claw. 2 Install the hanger onto two claws of the housing.
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http://www.xiaoyu163.com 3 7 63 1515 0 LEVER (LDG-A) / (LDG-B) Shaft A Shaft A Shaft B Shaft B Shaft C 1 Fit the lever (LDG-A) on shafts A – C and install it. 3 Type-E stop ring 2.0 2 Fit the lever (LDG-B) on shafts A and B and install it.
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http://www.xiaoyu163.com 3 7 63 1515 0 GUIDE (C) 2 Guide (C) 1 Three claws L 13942296513 MOUNTING POSITION OF CAPSTAN/REEL MOTOR (M901) 30 ° 3 Capstan/reel motor(M901) 2 Two precision screws (P 2 × 2) u163 1 Belt – 12 – http://www.xiaoyu163.com...
http://www.xiaoyu163.com SECTION 5 SECTION 4 ELECTRICAL ADJUSTMENTS 3 7 63 1515 0 MECHANICAL ADJUSTMENTS 1. Clean the following parts with a denatured-alcohol-moistened TEST MODE swab: This set have the test mode function. In the test mode, FM Auto playback head pinch roller Scan/Stop Level and MW Auto Scan/Stop Level adjustments can rubber belt...
http://www.xiaoyu163.com 3 7 63 1515 0 FM Stereo Separation Adjustment TUNER SECTION 0 dB=1 µV Setting: [SOURCE] button: FM Cautions during repair FM RF signal When the tuner unit is defective, replace it by a new one be- level meter antenna jack (J1) generator cause its internal block is difficult to repair.
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http://www.xiaoyu163.com 3 7 63 1515 0 Auto Scan/Stop Level Adjustment Make this adjustment after "FM Auto Scan/Stop Level Adjustment". Setting: [SOURCE] [MODE] button: MW 30 Ω 15 pF 65 pF AM RF signal generator AM dummy antenna (50 Ω ) antenna jack (J1) Carrier frequency : 999 kHz 30% amplitude...
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http://www.xiaoyu163.com 3 7 63 1515 0 Adjustment Location: —SET UPPER VIEW– Tape Speed Adjustment RV1 MW Auto Scan/Stop Level Adjustment RV2 FM Auto Scan/Stop Level Adjustment RV4 FM Stereo Separation Adjustment L 13942296513 u163 – 16 – http://www.xiaoyu163.com...
http://www.xiaoyu163.com 3 7 63 1515 0 6-6. IC PIN FUNCTION DESCRIPTION • IC501 MASTER U-COM (MN101C12GTC1) Pin No. Pin Name Function VREF- – Basic voltage (- side) of AD conversion input FM/AM common signal meter A/D conversion input terminal KEYIN1 KEY (AD conversion) input KEYIN0 DBASS IN...
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http://www.xiaoyu163.com 3 7 63 1515 0 Pin No. Pin Name Function Not used AMSON “L” is output in AMS mode N/R-OUT FWD/REV control output MTLON Metal control input/output TAPMUT Tape mute control output DOLON Dolby control input/output AMSIN Input to detect existence of song during AMS mode 57 to 75 Not used Combination stereo input and monaural output...
http://www.xiaoyu163.com SECTION 7 EXPLODED VIEWS 3 7 63 1515 0 NOTE: • The mechanical parts with no reference number in • -XX, -X mean standardized parts, so they may have the exploded views are not supplied. some difference from the original one. •...
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http://www.xiaoyu163.com 3 7 63 1515 0 (2) FRONT PANEL SECTION not supplied (KEY board) LCD901 L 13942296513 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-030-838-11 BUTTON (RELEASE) * 61 3-030-839-01 SHEET (REFLECTOR) 3-030-832-11 LEVER (S/A) 3-932-475-01 SPRING (RELEASE) * 62 3-030-824-01 PLATE, LIGHT GUIDE...
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http://www.xiaoyu163.com 3 7 63 1515 0 (3) MECHANISM DECK SECTION (MG-25F-136) HP901 M901 L 13942296513 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-3291-667-A CLUTCH (FR) ASSY 3-933-346-01 CATCHER 3-019-130-01 LEVER (LDG-A) 3-933-344-01 GUIDE (C) 3-019-131-01 LEVER (LDG-B) 3-014-798-01 SCREW (HEAD), SPECIAL 3-020-539-01 SPRING (LD-1), TENSION 3-364-151-01 WASHER...
http://www.xiaoyu163.com SECTION 8 ELECTRICAL PARTS LIST 3 7 63 1515 0 Note: • SEMICONDUCTORS • Due to standardization, replacements in the parts list When indicating parts by reference In each case, u: µ , for example: may be different from the parts specified in the number, please include the board diagrams or the components used on the set.
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http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R964 1-216-033-00 METAL CHIP 1/10W 1-163-017-00 CERAMIC CHIP 0.0047uF 5% 1-163-809-11 CERAMIC CHIP 0.047uF R965 1-216-037-00 METAL CHIP 1/10W R966 1-216-033-00 METAL CHIP 1/10W 1-109-982-11 CERAMIC CHIP R967...