Goldstar ffh-868a Service Manual adj

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CH1 CH2

Speaker Out

Playback Mode

Head

Test Tape
MTT-114

L ch

R ch

GND

Dual-trace
synchroscope

Electronic
Voltmeter

L out

R out

Unit

ADJUSTMENTS

This set has been aligned at the factory and normally will not require further adjustment. As a result, it is not
recommended that any attempt is made to modificate any circuit. If any parts are replaced or if anyone tampers
with the adjustment, realignment may be necessary.

IMPORTANT

1. Check Power-source voltage.

2. Set the function switch to band being aligned.

3. Turn volume control to minimum unless otherwise noted.

4. Connect low side of signal source and output indicator to chassis ground unless otherwise specified.

5. Keep the signal input as low as possible to avoid AGC and AC action.

Deck Mode Test Tape Test Point Adjustment Adjust for

A Deck Playback MTT-114 Speaker Out

DECK Screw

Maximum

Azimuth Screw

B Deck Playback MTT-114 Speaker Out Azimuth Screw Maximum

2. MOTOR SPEED ADJUSTMENT

Figure 2. Motor Speed Adjustment Connection Diagram

Head

Playback Mode

Unit

Speaker Out

GND

L out

R out

Record/Playback
head

Test Tape
MTT-111

Frequency Counter

Deck Mode Test Tape Test Point Adjustment Adjust for Remark

Normal Speed MTT-111 Speaker Out VR201 3kHz ± 1% A Deck

HI-Speed MTT-111 Speaker Out more than 5.4kHz HI-Speed Dubbing Mode

TAPE DECK ADJUSTMENT

1. AZIMUTH ADJUSTMENT

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3. RECORD BIAS ADJUSTMENT

Head

Unit

PN202

GND

Record/Playback
head

Test Tape
MTT-5511

Record/Playback
and Pause Mode

Frequency Counter

Deck Mode Test Tape Test Point Adjustment Adjust for

Rec/Pause MTT-5511

ERASE HEAD

L203

60kHz±5kHz(Auto-stop)

WIRE(PN202)

85kHz±5

kHz(Auto-reverse)

Figure 3. Record Bias Adjustment Connection Diagram

4. TUNER ADJUSTMENT

Figure 4. Tuner(S curve) Adjustment Connection Diagram

Unit

Signal Generator

GND

Electronic
OSCILLOSCOPE

FM Antenna
Terminal

Speake

Item Test Point Adjustment Adjust for

DC Voltage Checker Pin L106 0V

±50mV

MW Usable

Speaker Out L107 Maximum

Sensitivity

LW/SW Usable

Speaker Out L105 Maximum

Sensitivity