Free Audio Service Manuals - Free download harman kardon ch 160 service manual

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SPECIFICATIONS
0 FM SECTION Nominal Limit

Tuning Range 87.5MHz~107.9MHz
Usable Sensitivity 12dBf s 18dBf
Ouieting Sensitivity

Mono 17dBf s 23dBf

Stereo 35dBf s 40dBf
Signal to Noise Ratio

Mono 72dB a 66113

Stereo 65dB 2 60dB
IF Rejection (88.1MHz) 100dB z 90dB
Image Rejection (98.1MH2) 60dB z 55dB
AM Suppression 50dB z 44dB
Capture Ratio 1.5dB s 3dB
Selectivity (1400kHz) 70dB 2 60dB
Distortion (Stereo)

(65dBf,100%) 0.22% s 0.4%
Frequency Response

(+0, iadB) 20Hz~15kHz
MPX Separation at 1kHz 44:13 a 35dB
Output Level (75kHz dev.) 775m\/ inB

0 AM SECTION

Tuning Range 530kHz~1620kHz

Signal to Noise Ratio SOdB z 45dB
IF Rejection (600kHzl 100dB 2 90dB
Image Rejection (1400kHZl 55dB a 50dB
Selectivity (ingz) 50dB z 45dB

OAUDID SECTION Nominal Limit
Tone Control Action
Bass (50Hzl 11dB 11.5dB

Treble (10kHz) 11dB $1.5dB
Loudness ActionlBOHz/lOkHz) 10dB : 3dB/3dB a: 2dB
Output Impedance 5009

O CASSETTE TAPE DECK SECTION
Wow and Flutter 0.1% S 0.2%
Tape Speed (4.75cm/seC.) +1% 5 +51% -1%
FF and REW Time

(for (2-60 tape) 1255ec. s 150sec.
Signal to Noise Ratio (LN Position)

Dolby NR Off 55dB 2 50dB

Dolby NR Type B 64dB 2 58dB

Dolby NR Type C 70dB 2 64dB
Distortion 1% s 2%
Frequency Response 20Hz~ 20kHz
Separation 40dB a 35dB
Crosstalk 70dB 2 60dB

Output Level (Volume Max.) 610mV :SdB

This specification is the target of servicing. But. there is a case that
the specification is not applicable to the measurement condition and
instrument.

Specifications and components subject to change without notice. Overall
performance will be maintained or improved.

*Dolby noise reduction manufactured under license from Dolby
Laboratories Licensing Corporation. Dolby and the double-D
symbol are trademarks of Dolby Laboratories Licensing Corporation.

DISASSEMBLY PROCEDURES (REFER TO PAGES 10 AND 13)

(E CASSETTE TAPE PLAYER MECHANICAL ASSEMBLY
(104) REMOVAL
Remove 4 screws 0 and then remove the Bracket (173).
t Pull out the Fader Knob (158).
. Remove 4 screws (3 and then remove the Center Panel
Assembly (101).
. Remove 4 screws 0 and then remove the Cassette Tape
Player Mechanical Assembly (104) with the NAB AMP,
MSS/Mecha Control and Dolby P.C. Boards (PCB-2,
PCB-3 and PCB-9) and the Brackets (171 and 168). Also,
disconnect the lead wires connected to the Main P.C.
Board (PCB-1).
5. Disconnect the lead wires connected to the Dolby RC.
Board (PCB-9).

6. Remove 2 screws (D and then remove the Dolby P.C.
Board (PCBSI.

7. Disconnect the lead wires connected to the NAB AMP
RC. Board (PCB-2).

8. Remove 2 screws (3 and then remove the NAB AMP
RC. Board (PCB-2).

b (.0er

9. Disconnect the lead wires connected to the
MSS/Mecha control RC. Board (PCB-3).

10. Remove the screw 6 and then remove the MSSIMecha
control P.C. Board (PCB-3).

11. Remove 4 screws ® and then remove the Cassette
Tape Player Mechanical Assembly (104) from the
Bracket (171).

MAIN RC. BOARD (PCB-1) REMOVAL

Remove 4 screws (:1 and then remove the Bracket (177)

and the Insulator (183).

. Remove the Center Panel Assembly (101). (Refer to step
(El-2 and 3.)

. Pull out 9 Push Buttons (153).

. Remove the screw 0 and then remove the Bracket
(169).

5. Remove 6 screws 0 and then remove the Main P.C.

Board (PCBall with the Buffer AMP RC. Board lPCB»4l.

Also, disconnect the lead wires connected to the Main

RC. Board (PCB-1).

ALIGNMENT PROCEDURES (REFER TO PAGES 7~12)

I ELECTRICAL ADJUSTMENT

1. Before adjustment

0 Connect a 14V power supply to the Power Supply
Lead (+ACC, +8 and GND).

0 Since head magnetization, dust accumulations, etc.
are likely to introduce errors in the various
characteristics, it is very important that the heads are
properly demag-netized and cleaned before commen-
cing any adjustment, particularly frequency response
and head .azimuth adjustment.

2. Instruments required

0 Low frequency oscillator

0 AC VTVM or dual channel AC VTVM
O Oscilloscope

O Wow/flutter meter .
0 Frequency counter

3. Test tapes
0 Dolby NR level adjustment
0 Azimuth adjustment ........

. MTT-150 or TCCa13O
.............. TCC7153

Harman kardon ch 160 service manual

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